jquery.validate.js

/*!
 * jQuery Validation Plugin v1.19.5
 *
 * https://jqueryvalidation.org/
 *
 * Copyright (c) 2022 Jörn Zaefferer
 * Released under the MIT license
 */
(function( factory ) {
    if ( typeof define === "function" && define.amd ) {
        define( ["jquery", "jquery/jquery.metadata"], factory );
    } else if (typeof module === "object" && module.exports) {
        module.exports = factory( require( "jquery" ) );
    } else {
        factory( jQuery );
    }
}(function( $ ) {

    $.extend( $.fn, {

        // https://jqueryvalidation.org/validate/
        validate: function( options ) {

            // If nothing is selected, return nothing; can't chain anyway
            if ( !this.length ) {
                if ( options && options.debug && window.console ) {
                    console.warn( "Nothing selected, can't validate, returning nothing." );
                }
                return;
            }

            // Check if a validator for this form was already created
            var validator = $.data( this[ 0 ], "validator" );
            if ( validator ) {
                return validator;
            }

            // Add novalidate tag if HTML5.
            this.attr( "novalidate", "novalidate" );

            validator = new $.validator( options, this[ 0 ] );
            $.data( this[ 0 ], "validator", validator );

            if ( validator.settings.onsubmit ) {

                this.on( "click.validate", ":submit", function( event ) {

                    // Track the used submit button to properly handle scripted
                    // submits later.
                    validator.submitButton = event.currentTarget;

                    // Allow suppressing validation by adding a cancel class to the submit button
                    if ( $( this ).hasClass( "cancel" ) ) {
                        validator.cancelSubmit = true;
                    }

                    // Allow suppressing validation by adding the html5 formnovalidate attribute to the submit button
                    if ( $( this ).attr( "formnovalidate" ) !== undefined ) {
                        validator.cancelSubmit = true;
                    }
                } );

                // Validate the form on submit
                this.on( "submit.validate", function( event ) {
                    if ( validator.settings.debug ) {

                        // Prevent form submit to be able to see console output
                        event.preventDefault();
                    }

                    function handle() {
                        var hidden, result;

                        // Insert a hidden input as a replacement for the missing submit button
                        // The hidden input is inserted in two cases:
                        //   - A user defined a `submitHandler`
                        //   - There was a pending request due to `remote` method and `stopRequest()`
                        //     was called to submit the form in case it's valid
                        if ( validator.submitButton && ( validator.settings.submitHandler || validator.formSubmitted ) ) {
                            hidden = $( "<input type='hidden'/>" )
                                .attr( "name", validator.submitButton.name )
                                .val( $( validator.submitButton ).val() )
                                .appendTo( validator.currentForm );
                        }

                        if ( validator.settings.submitHandler && !validator.settings.debug ) {
                            result = validator.settings.submitHandler.call( validator, validator.currentForm, event );
                            if ( hidden ) {

                                // And clean up afterwards; thanks to no-block-scope, hidden can be referenced
                                hidden.remove();
                            }
                            if ( result !== undefined ) {
                                return result;
                            }
                            return false;
                        }
                        return true;
                    }

                    // Prevent submit for invalid forms or custom submit handlers
                    if ( validator.cancelSubmit ) {
                        validator.cancelSubmit = false;
                        return handle();
                    }
                    if ( validator.form() ) {
                        if ( validator.pendingRequest ) {
                            validator.formSubmitted = true;
                            return false;
                        }
                        return handle();
                    } else {
                        validator.focusInvalid();
                        return false;
                    }
                } );
            }

            return validator;
        },

        // https://jqueryvalidation.org/valid/
        valid: function() {
            var valid, validator, errorList;

            if ( $( this[ 0 ] ).is( "form" ) ) {
                valid = this.validate().form();
            } else {
                errorList = [];
                valid = true;
                validator = $( this[ 0 ].form ).validate();
                this.each( function() {
                    valid = validator.element( this ) && valid;
                    if ( !valid ) {
                        errorList = errorList.concat( validator.errorList );
                    }
                } );
                validator.errorList = errorList;
            }
            return valid;
        },

        // https://jqueryvalidation.org/rules/
        rules: function( command, argument ) {
            var element = this[ 0 ],
                isContentEditable = typeof this.attr( "contenteditable" ) !== "undefined" && this.attr( "contenteditable" ) !== "false",
                settings, staticRules, existingRules, data, param, filtered;

            // If nothing is selected, return empty object; can't chain anyway
            if ( element == null ) {
                return;
            }

            if ( !element.form && isContentEditable ) {
                element.form = this.closest( "form" )[ 0 ];
                element.name = this.attr( "name" );
            }

            if ( element.form == null ) {
                return;
            }

            if ( command ) {
                settings = $.data( element.form, "validator" ).settings;
                staticRules = settings.rules;
                existingRules = $.validator.staticRules( element );
                switch ( command ) {
                    case "add":
                        $.extend( existingRules, $.validator.normalizeRule( argument ) );

                        // Remove messages from rules, but allow them to be set separately
                        delete existingRules.messages;
                        staticRules[ element.name ] = existingRules;
                        if ( argument.messages ) {
                            settings.messages[ element.name ] = $.extend( settings.messages[ element.name ], argument.messages );
                        }
                        break;
                    case "remove":
                        if ( !argument ) {
                            delete staticRules[ element.name ];
                            return existingRules;
                        }
                        filtered = {};
                        $.each( argument.split( /\s/ ), function( index, method ) {
                            filtered[ method ] = existingRules[ method ];
                            delete existingRules[ method ];
                        } );
                        return filtered;
                }
            }

            data = $.validator.normalizeRules(
                $.extend(
                    {},
                    $.validator.metadataRules(element),
                    $.validator.classRules( element ),
                    $.validator.attributeRules( element ),
                    $.validator.dataRules( element ),
                    $.validator.staticRules( element )
                ), element );

            // Make sure required is at front
            if ( data.required ) {
                param = data.required;
                delete data.required;
                data = $.extend( { required: param }, data );
            }

            // Make sure remote is at back
            if ( data.remote ) {
                param = data.remote;
                delete data.remote;
                data = $.extend( data, { remote: param } );
            }

            return data;
        }
    } );

// JQuery trim is deprecated, provide a trim method based on String.prototype.trim
    var trim = function( str ) {

        // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/trim#Polyfill
        return str.replace( /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, "" );
    };

// Custom selectors
    $.extend( $.expr.pseudos || $.expr[ ":" ], {		// '|| $.expr[ ":" ]' here enables backwards compatibility to jQuery 1.7. Can be removed when dropping jQ 1.7.x support

        // https://jqueryvalidation.org/blank-selector/
        blank: function( a ) {
            return !trim( "" + $( a ).val() );
        },

        // https://jqueryvalidation.org/filled-selector/
        filled: function( a ) {
            var val = $( a ).val();
            return val !== null && !!trim( "" + val );
        },

        // https://jqueryvalidation.org/unchecked-selector/
        unchecked: function( a ) {
            return !$( a ).prop( "checked" );
        }
    } );

// Constructor for validator
    $.validator = function( options, form ) {
        this.settings = $.extend( true, {}, $.validator.defaults, options );
        this.currentForm = form;
        this.init();
    };

// https://jqueryvalidation.org/jQuery.validator.format/
    $.validator.format = function( source, params ) {
        if ( arguments.length === 1 ) {
            return function() {
                var args = $.makeArray( arguments );
                args.unshift( source );
                return $.validator.format.apply( this, args );
            };
        }
        if ( params === undefined ) {
            return source;
        }
        if ( arguments.length > 2 && params.constructor !== Array  ) {
            params = $.makeArray( arguments ).slice( 1 );
        }
        if ( params.constructor !== Array ) {
            params = [ params ];
        }
        $.each( params, function( i, n ) {
            source = source.replace( new RegExp( "\\{" + i + "\\}", "g" ), function() {
                return n;
            } );
        } );
        return source;
    };

    $.extend( $.validator, {

        defaults: {
            messages: {},
            groups: {},
            rules: {},
            errorClass: "error",
            pendingClass: "pending",
            validClass: "valid",
            errorElement: "label",
            focusCleanup: false,
            focusInvalid: true,
            errorContainer: $( [] ),
            errorLabelContainer: $( [] ),
            onsubmit: true,
            ignore: ":hidden",
            ignoreTitle: false,
            onfocusin: function( element ) {
                this.lastActive = element;

                // Hide error label and remove error class on focus if enabled
                if ( this.settings.focusCleanup ) {
                    if ( this.settings.unhighlight ) {
                        this.settings.unhighlight.call( this, element, this.settings.errorClass, this.settings.validClass );
                    }
                    this.hideThese( this.errorsFor( element ) );
                }
            },
            onfocusout: function( element ) {
                if ( !this.checkable( element ) && ( element.name in this.submitted || !this.optional( element ) ) ) {
                    this.element( element );
                }
            },
            onkeyup: function( element, event ) {

                // Avoid revalidate the field when pressing one of the following keys
                // Shift       => 16
                // Ctrl        => 17
                // Alt         => 18
                // Caps lock   => 20
                // End         => 35
                // Home        => 36
                // Left arrow  => 37
                // Up arrow    => 38
                // Right arrow => 39
                // Down arrow  => 40
                // Insert      => 45
                // Num lock    => 144
                // AltGr key   => 225
                var excludedKeys = [
                    16, 17, 18, 20, 35, 36, 37,
                    38, 39, 40, 45, 144, 225
                ];

                if ( event.which === 9 && this.elementValue( element ) === "" || $.inArray( event.keyCode, excludedKeys ) !== -1 ) {
                    return;
                } else if ( element.name in this.submitted || element.name in this.invalid ) {
                    this.element( element );
                }
            },
            onclick: function( element ) {

                // Click on selects, radiobuttons and checkboxes
                if ( element.name in this.submitted ) {
                    this.element( element );

                    // Or option elements, check parent select in that case
                } else if ( element.parentNode.name in this.submitted ) {
                    this.element( element.parentNode );
                }
            },
            highlight: function( element, errorClass, validClass ) {
                if ( element.type === "radio" ) {
                    this.findByName( element.name ).addClass( errorClass ).removeClass( validClass );
                } else {
                    $( element ).addClass( errorClass ).removeClass( validClass );
                }
            },
            unhighlight: function( element, errorClass, validClass ) {
                if ( element.type === "radio" ) {
                    this.findByName( element.name ).removeClass( errorClass ).addClass( validClass );
                } else {
                    $( element ).removeClass( errorClass ).addClass( validClass );
                }
            }
        },

        // https://jqueryvalidation.org/jQuery.validator.setDefaults/
        setDefaults: function( settings ) {
            $.extend( $.validator.defaults, settings );
        },

        messages: {
            required: "This field is required.",
            remote: "Please fix this field.",
            email: "Please enter a valid email address.",
            url: "Please enter a valid URL.",
            date: "Please enter a valid date.",
            dateISO: "Please enter a valid date (ISO).",
            number: "Please enter a valid number.",
            digits: "Please enter only digits.",
            equalTo: "Please enter the same value again.",
            maxlength: $.validator.format( "Please enter no more than {0} characters." ),
            minlength: $.validator.format( "Please enter at least {0} characters." ),
            rangelength: $.validator.format( "Please enter a value between {0} and {1} characters long." ),
            range: $.validator.format( "Please enter a value between {0} and {1}." ),
            max: $.validator.format( "Please enter a value less than or equal to {0}." ),
            min: $.validator.format( "Please enter a value greater than or equal to {0}." ),
            step: $.validator.format( "Please enter a multiple of {0}." )
        },

        autoCreateRanges: false,

        prototype: {

            init: function() {
                this.labelContainer = $( this.settings.errorLabelContainer );
                this.errorContext = this.labelContainer.length && this.labelContainer || $( this.currentForm );
                this.containers = $( this.settings.errorContainer ).add( this.settings.errorLabelContainer );
                this.submitted = {};
                this.valueCache = {};
                this.pendingRequest = 0;
                this.pending = {};
                this.invalid = {};
                this.reset();

                var currentForm = this.currentForm,
                    groups = ( this.groups = {} ),
                    rules;
                $.each( this.settings.groups, function( key, value ) {
                    if ( typeof value === "string" ) {
                        value = value.split( /\s/ );
                    }
                    $.each( value, function( index, name ) {
                        groups[ name ] = key;
                    } );
                } );
                rules = this.settings.rules;
                $.each( rules, function( key, value ) {
                    rules[ key ] = $.validator.normalizeRule( value );
                } );

                function delegate( event ) {
                    var isContentEditable = typeof $( this ).attr( "contenteditable" ) !== "undefined" && $( this ).attr( "contenteditable" ) !== "false";

                    // Set form expando on contenteditable
                    if ( !this.form && isContentEditable ) {
                        this.form = $( this ).closest( "form" )[ 0 ];
                        this.name = $( this ).attr( "name" );
                    }

                    // Ignore the element if it belongs to another form. This will happen mainly
                    // when setting the `form` attribute of an input to the id of another form.
                    if ( currentForm !== this.form ) {
                        return;
                    }

                    var validator = $.data( this.form, "validator" ),
                        eventType = "on" + event.type.replace( /^validate/, "" ),
                        settings = validator.settings;
                    if ( settings[ eventType ] && !$( this ).is( settings.ignore ) ) {
                        settings[ eventType ].call( validator, this, event );
                    }
                }

                $( this.currentForm )
                    .on( "focusin.validate focusout.validate keyup.validate",
                        ":text, [type='password'], [type='file'], select, textarea, [type='number'], [type='search'], " +
                        "[type='tel'], [type='url'], [type='email'], [type='datetime'], [type='date'], [type='month'], " +
                        "[type='week'], [type='time'], [type='datetime-local'], [type='range'], [type='color'], " +
                        "[type='radio'], [type='checkbox'], [contenteditable], [type='button']", delegate )

                    // Support: Chrome, oldIE
                    // "select" is provided as event.target when clicking a option
                    .on( "click.validate", "select, option, [type='radio'], [type='checkbox']", delegate );

                if ( this.settings.invalidHandler ) {
                    $( this.currentForm ).on( "invalid-form.validate", this.settings.invalidHandler );
                }
            },

            // https://jqueryvalidation.org/Validator.form/
            form: function() {
                this.checkForm();
                $.extend( this.submitted, this.errorMap );
                this.invalid = $.extend( {}, this.errorMap );
                if ( !this.valid() ) {
                    $( this.currentForm ).triggerHandler( "invalid-form", [ this ] );
                }
                this.showErrors();
                return this.valid();
            },

            checkForm: function() {
                this.prepareForm();
                for ( var i = 0, elements = ( this.currentElements = this.elements() ); elements[ i ]; i++ ) {
                    this.check( elements[ i ] );
                }
                return this.valid();
            },

            // https://jqueryvalidation.org/Validator.element/
            element: function( element ) {
                var cleanElement = this.clean( element ),
                    checkElement = this.validationTargetFor( cleanElement ),
                    v = this,
                    result = true,
                    rs, group;

                if ( checkElement === undefined ) {
                    delete this.invalid[ cleanElement.name ];
                } else {
                    this.prepareElement( checkElement );
                    this.currentElements = $( checkElement );

                    // If this element is grouped, then validate all group elements already
                    // containing a value
                    group = this.groups[ checkElement.name ];
                    if ( group ) {
                        $.each( this.groups, function( name, testgroup ) {
                            if ( testgroup === group && name !== checkElement.name ) {
                                cleanElement = v.validationTargetFor( v.clean( v.findByName( name ) ) );
                                if ( cleanElement && cleanElement.name in v.invalid ) {
                                    v.currentElements.push( cleanElement );
                                    result = v.check( cleanElement ) && result;
                                }
                            }
                        } );
                    }

                    rs = this.check( checkElement ) !== false;
                    result = result && rs;
                    if ( rs ) {
                        this.invalid[ checkElement.name ] = false;
                    } else {
                        this.invalid[ checkElement.name ] = true;
                    }

                    if ( !this.numberOfInvalids() ) {

                        // Hide error containers on last error
                        this.toHide = this.toHide.add( this.containers );
                    }
                    this.showErrors();

                    // Add aria-invalid status for screen readers
                    $( element ).attr( "aria-invalid", !rs );
                }

                return result;
            },

            // https://jqueryvalidation.org/Validator.showErrors/
            showErrors: function( errors ) {
                if ( errors ) {
                    var validator = this;

                    // Add items to error list and map
                    $.extend( this.errorMap, errors );
                    this.errorList = $.map( this.errorMap, function( message, name ) {
                        return {
                            message: message,
                            element: validator.findByName( name )[ 0 ]
                        };
                    } );

                    // Remove items from success list
                    this.successList = $.grep( this.successList, function( element ) {
                        return !( element.name in errors );
                    } );
                }
                if ( this.settings.showErrors ) {
                    this.settings.showErrors.call( this, this.errorMap, this.errorList );
                } else {
                    this.defaultShowErrors();
                }
            },

            // https://jqueryvalidation.org/Validator.resetForm/
            resetForm: function() {
                if ( $.fn.resetForm ) {
                    $( this.currentForm ).resetForm();
                }
                this.invalid = {};
                this.submitted = {};
                this.prepareForm();
                this.hideErrors();
                var elements = this.elements()
                    .removeData( "previousValue" )
                    .removeAttr( "aria-invalid" );

                this.resetElements( elements );
            },

            resetElements: function( elements ) {
                var i;

                if ( this.settings.unhighlight ) {
                    for ( i = 0; elements[ i ]; i++ ) {
                        this.settings.unhighlight.call( this, elements[ i ],
                            this.settings.errorClass, "" );
                        this.findByName( elements[ i ].name ).removeClass( this.settings.validClass );
                    }
                } else {
                    elements
                        .removeClass( this.settings.errorClass )
                        .removeClass( this.settings.validClass );
                }
            },

            numberOfInvalids: function() {
                return this.objectLength( this.invalid );
            },

            objectLength: function( obj ) {
                /* jshint unused: false */
                var count = 0,
                    i;
                for ( i in obj ) {

                    // This check allows counting elements with empty error
                    // message as invalid elements
                    if ( obj[ i ] !== undefined && obj[ i ] !== null && obj[ i ] !== false ) {
                        count++;
                    }
                }
                return count;
            },

            hideErrors: function() {
                this.hideThese( this.toHide );
            },

            hideThese: function( errors ) {
                errors.not( this.containers ).text( "" );
                this.addWrapper( errors ).hide();
            },

            valid: function() {
                return this.size() === 0;
            },

            size: function() {
                return this.errorList.length;
            },

            focusInvalid: function() {
                if ( this.settings.focusInvalid ) {
                    try {
                        $( this.findLastActive() || this.errorList.length && this.errorList[ 0 ].element || [] )
                            .filter( ":visible" )
                            .trigger( "focus" )

                            // Manually trigger focusin event; without it, focusin handler isn't called, findLastActive won't have anything to find
                            .trigger( "focusin" );
                    } catch ( e ) {

                        // Ignore IE throwing errors when focusing hidden elements
                    }
                }
            },

            findLastActive: function() {
                var lastActive = this.lastActive;
                return lastActive && $.grep( this.errorList, function( n ) {
                    return n.element.name === lastActive.name;
                } ).length === 1 && lastActive;
            },

            elements: function() {
                var validator = this,
                    rulesCache = {};

                // Select all valid inputs inside the form (no submit or reset buttons)
                return $( this.currentForm )
                    .find( "input, select, textarea, [contenteditable]" )
                    .not( ":submit, :reset, :image, :disabled" )
                    .not( this.settings.ignore )
                    .filter( function() {
                        var name = this.name || $( this ).attr( "name" ); // For contenteditable
                        var isContentEditable = typeof $( this ).attr( "contenteditable" ) !== "undefined" && $( this ).attr( "contenteditable" ) !== "false";

                        if ( !name && validator.settings.debug && window.console ) {
                            console.error( "%o has no name assigned", this );
                        }

                        // Set form expando on contenteditable
                        if ( isContentEditable ) {
                            this.form = $( this ).closest( "form" )[ 0 ];
                            this.name = name;
                        }

                        // Ignore elements that belong to other/nested forms
                        if ( this.form !== validator.currentForm ) {
                            return false;
                        }

                        // Select only the first element for each name, and only those with rules specified
                        if ( name in rulesCache || !validator.objectLength( $( this ).rules() ) ) {
                            return false;
                        }

                        rulesCache[ name ] = true;
                        return true;
                    } );
            },

            clean: function( selector ) {
                return $( selector )[ 0 ];
            },

            errors: function() {
                var errorClass = this.settings.errorClass.split( " " ).join( "." );
                return $( this.settings.errorElement + "." + errorClass, this.errorContext );
            },

            resetInternals: function() {
                this.successList = [];
                this.errorList = [];
                this.errorMap = {};
                this.toShow = $( [] );
                this.toHide = $( [] );
            },

            reset: function() {
                this.resetInternals();
                this.currentElements = $( [] );
            },

            prepareForm: function() {
                this.reset();
                this.toHide = this.errors().add( this.containers );
            },

            prepareElement: function( element ) {
                this.reset();
                this.toHide = this.errorsFor( element );
            },

            elementValue: function( element ) {
                var $element = $( element ),
                    type = element.type,
                    isContentEditable = typeof $element.attr( "contenteditable" ) !== "undefined" && $element.attr( "contenteditable" ) !== "false",
                    val, idx;

                if ( type === "radio" || type === "checkbox" ) {
                    return this.findByName( element.name ).filter( ":checked" ).val();
                } else if ( type === "number" && typeof element.validity !== "undefined" ) {
                    return element.validity.badInput ? "NaN" : $element.val();
                }

                if ( isContentEditable ) {
                    val = $element.text();
                } else {
                    val = $element.val();
                }

                if ( type === "file" ) {

                    // Modern browser (chrome & safari)
                    if ( val.substr( 0, 12 ) === "C:\\fakepath\\" ) {
                        return val.substr( 12 );
                    }

                    // Legacy browsers
                    // Unix-based path
                    idx = val.lastIndexOf( "/" );
                    if ( idx >= 0 ) {
                        return val.substr( idx + 1 );
                    }

                    // Windows-based path
                    idx = val.lastIndexOf( "\\" );
                    if ( idx >= 0 ) {
                        return val.substr( idx + 1 );
                    }

                    // Just the file name
                    return val;
                }

                if ( typeof val === "string" ) {
                    return val.replace( /\r/g, "" );
                }
                return val;
            },

            check: function( element ) {
                element = this.validationTargetFor( this.clean( element ) );

                var rules = $( element ).rules(),
                    rulesCount = $.map( rules, function( n, i ) {
                        return i;
                    } ).length,
                    dependencyMismatch = false,
                    val = this.elementValue( element ),
                    result, method, rule, normalizer;

                // Prioritize the local normalizer defined for this element over the global one
                // if the former exists, otherwise user the global one in case it exists.
                if ( typeof rules.normalizer === "function" ) {
                    normalizer = rules.normalizer;
                } else if (	typeof this.settings.normalizer === "function" ) {
                    normalizer = this.settings.normalizer;
                }

                // If normalizer is defined, then call it to the changed value instead
                // of using the real one.
                // Note that `this` in the normalizer is `element`.
                if ( normalizer ) {
                    val = normalizer.call( element, val );

                    // Delete the normalizer from rules to avoid treating it as a pre-defined method.
                    delete rules.normalizer;
                }

                for ( method in rules ) {
                    rule = { method: method, parameters: rules[ method ] };
                    try {
                        result = $.validator.methods[ method ].call( this, val, element, rule.parameters );

                        // If a method indicates that the field is optional and therefore valid,
                        // don't mark it as valid when there are no other rules
                        if ( result === "dependency-mismatch" && rulesCount === 1 ) {
                            dependencyMismatch = true;
                            continue;
                        }
                        dependencyMismatch = false;

                        if ( result === "pending" ) {
                            this.toHide = this.toHide.not( this.errorsFor( element ) );
                            return;
                        }

                        if ( !result ) {
                            this.formatAndAdd( element, rule );
                            return false;
                        }
                    } catch ( e ) {
                        if ( this.settings.debug && window.console ) {
                            console.log( "Exception occurred when checking element " + element.id + ", check the '" + rule.method + "' method.", e );
                        }
                        if ( e instanceof TypeError ) {
                            e.message += ".  Exception occurred when checking element " + element.id + ", check the '" + rule.method + "' method.";
                        }

                        throw e;
                    }
                }
                if ( dependencyMismatch ) {
                    return;
                }
                if ( this.objectLength( rules ) ) {
                    this.successList.push( element );
                }
                return true;
            },

            // Return the custom message for the given element and validation method
            // specified in the element's HTML5 data attribute
            // return the generic message if present and no method specific message is present
            customDataMessage: function( element, method ) {
                return $( element ).data( "msg" + method.charAt( 0 ).toUpperCase() +
                    method.substring( 1 ).toLowerCase() ) || $( element ).data( "msg" );
            },

            // Return the custom message for the given element name and validation method
            customMessage: function( name, method ) {
                var m = this.settings.messages[ name ];
                return m && ( m.constructor === String ? m : m[ method ] );
            },

            // Return the first defined argument, allowing empty strings
            findDefined: function() {
                for ( var i = 0; i < arguments.length; i++ ) {
                    if ( arguments[ i ] !== undefined ) {
                        return arguments[ i ];
                    }
                }
                return undefined;
            },

            // The second parameter 'rule' used to be a string, and extended to an object literal
            // of the following form:
            // rule = {
            //     method: "method name",
            //     parameters: "the given method parameters"
            // }
            //
            // The old behavior still supported, kept to maintain backward compatibility with
            // old code, and will be removed in the next major release.
            defaultMessage: function( element, rule ) {
                if ( typeof rule === "string" ) {
                    rule = { method: rule };
                }

                var message = this.findDefined(
                        this.customMessage( element.name, rule.method ),
                        this.customDataMessage( element, rule.method ),

                        // 'title' is never undefined, so handle empty string as undefined
                        !this.settings.ignoreTitle && element.title || undefined,
                        $.validator.messages[ rule.method ],
                        "<strong>Warning: No message defined for " + element.name + "</strong>"
                    ),
                    theregex = /\$?\{(\d+)\}/g;
                if ( typeof message === "function" ) {
                    message = message.call( this, rule.parameters, element );
                } else if ( theregex.test( message ) ) {
                    message = $.validator.format( message.replace( theregex, "{$1}" ), rule.parameters );
                }

                return message;
            },

            formatAndAdd: function( element, rule ) {
                var message = this.defaultMessage( element, rule );

                this.errorList.push( {
                    message: message,
                    element: element,
                    method: rule.method
                } );

                this.errorMap[ element.name ] = message;
                this.submitted[ element.name ] = message;
            },

            addWrapper: function( toToggle ) {
                if ( this.settings.wrapper ) {
                    toToggle = toToggle.add( toToggle.parent( this.settings.wrapper ) );
                }
                return toToggle;
            },

            defaultShowErrors: function() {
                var i, elements, error;
                for ( i = 0; this.errorList[ i ]; i++ ) {
                    error = this.errorList[ i ];
                    if ( this.settings.highlight ) {
                        this.settings.highlight.call( this, error.element, this.settings.errorClass, this.settings.validClass );
                    }
                    this.showLabel( error.element, error.message );
                }
                if ( this.errorList.length ) {
                    this.toShow = this.toShow.add( this.containers );
                }
                if ( this.settings.success ) {
                    for ( i = 0; this.successList[ i ]; i++ ) {
                        this.showLabel( this.successList[ i ] );
                    }
                }
                if ( this.settings.unhighlight ) {
                    for ( i = 0, elements = this.validElements(); elements[ i ]; i++ ) {
                        this.settings.unhighlight.call( this, elements[ i ], this.settings.errorClass, this.settings.validClass );
                    }
                }
                this.toHide = this.toHide.not( this.toShow );
                this.hideErrors();
                this.addWrapper( this.toShow ).show();
            },

            validElements: function() {
                return this.currentElements.not( this.invalidElements() );
            },

            invalidElements: function() {
                return $( this.errorList ).map( function() {
                    return this.element;
                } );
            },

            showLabel: function( element, message ) {
                var place, group, errorID, v,
                    error = this.errorsFor( element ),
                    elementID = this.idOrName( element ),
                    describedBy = $( element ).attr( "aria-describedby" );

                if ( error.length ) {

                    // Refresh error/success class
                    error.removeClass( this.settings.validClass ).addClass( this.settings.errorClass );

                    // Replace message on existing label
                    error.html( message );
                } else {

                    // Create error element
                    error = $( "<" + this.settings.errorElement + ">" )
                        .attr( "id", elementID + "-error" )
                        .addClass( this.settings.errorClass )
                        .html( message || "" );

                    // Maintain reference to the element to be placed into the DOM
                    place = error;
                    if ( this.settings.wrapper ) {

                        // Make sure the element is visible, even in IE
                        // actually showing the wrapped element is handled elsewhere
                        place = error.hide().show().wrap( "<" + this.settings.wrapper + "/>" ).parent();
                    }
                    if ( this.labelContainer.length ) {
                        this.labelContainer.append( place );
                    } else if ( this.settings.errorPlacement ) {
                        this.settings.errorPlacement.call( this, place, $( element ) );
                    } else {
                        place.insertAfter( element );
                    }

                    // Link error back to the element
                    if ( error.is( "label" ) ) {

                        // If the error is a label, then associate using 'for'
                        error.attr( "for", elementID );

                        // If the element is not a child of an associated label, then it's necessary
                        // to explicitly apply aria-describedby
                    } else if ( error.parents( "label[for='" + this.escapeCssMeta( elementID ) + "']" ).length === 0 ) {
                        errorID = error.attr( "id" );

                        // Respect existing non-error aria-describedby
                        if ( !describedBy ) {
                            describedBy = errorID;
                        } else if ( !describedBy.match( new RegExp( "\\b" + this.escapeCssMeta( errorID ) + "\\b" ) ) ) {

                            // Add to end of list if not already present
                            describedBy += " " + errorID;
                        }
                        $( element ).attr( "aria-describedby", describedBy );

                        // If this element is grouped, then assign to all elements in the same group
                        group = this.groups[ element.name ];
                        if ( group ) {
                            v = this;
                            $.each( v.groups, function( name, testgroup ) {
                                if ( testgroup === group ) {
                                    $( "[name='" + v.escapeCssMeta( name ) + "']", v.currentForm )
                                        .attr( "aria-describedby", error.attr( "id" ) );
                                }
                            } );
                        }
                    }
                }
                if ( !message && this.settings.success ) {
                    error.text( "" );
                    if ( typeof this.settings.success === "string" ) {
                        error.addClass( this.settings.success );
                    } else {
                        this.settings.success( error, element );
                    }
                }
                this.toShow = this.toShow.add( error );
            },

            errorsFor: function( element ) {
                var name = this.escapeCssMeta( this.idOrName( element ) ),
                    describer = $( element ).attr( "aria-describedby" ),
                    selector = "label[for='" + name + "'], label[for='" + name + "'] *";

                // 'aria-describedby' should directly reference the error element
                if ( describer ) {
                    selector = selector + ", #" + this.escapeCssMeta( describer )
                        .replace( /\s+/g, ", #" ) + ":visible";
                }

                return this
                    .errors()
                    .filter( selector );
            },

            // See https://api.jquery.com/category/selectors/, for CSS
            // meta-characters that should be escaped in order to be used with JQuery
            // as a literal part of a name/id or any selector.
            escapeCssMeta: function( string ) {
                if ( string === undefined ) {
                    return "";
                }

                return string.replace( /([\\!"#$%&'()*+,./:;<=>?@\[\]^`{|}~])/g, "\\$1" );
            },

            idOrName: function( element ) {
                return this.groups[ element.name ] || ( this.checkable( element ) ? element.name : element.id || element.name );
            },

            validationTargetFor: function( element ) {

                // If radio/checkbox, validate first element in group instead
                if ( this.checkable( element ) ) {
                    element = this.findByName( element.name );
                }

                // Always apply ignore filter
                return $( element ).not( this.settings.ignore )[ 0 ];
            },

            checkable: function( element ) {
                return ( /radio|checkbox/i ).test( element.type );
            },

            findByName: function( name ) {
                return $( this.currentForm ).find( "[name='" + this.escapeCssMeta( name ) + "']" );
            },

            getLength: function( value, element ) {
                switch ( element.nodeName.toLowerCase() ) {
                    case "select":
                        return $( "option:selected", element ).length;
                    case "input":
                        if ( this.checkable( element ) ) {
                            return this.findByName( element.name ).filter( ":checked" ).length;
                        }
                }
                return value.length;
            },

            depend: function( param, element ) {
                return this.dependTypes[ typeof param ] ? this.dependTypes[ typeof param ]( param, element ) : true;
            },

            dependTypes: {
                "boolean": function( param ) {
                    return param;
                },
                "string": function( param, element ) {
                    return !!$( param, element.form ).length;
                },
                "function": function( param, element ) {
                    return param( element );
                }
            },

            optional: function( element ) {
                var val = this.elementValue( element );
                return !$.validator.methods.required.call( this, val, element ) && "dependency-mismatch";
            },

            startRequest: function( element ) {
                if ( !this.pending[ element.name ] ) {
                    this.pendingRequest++;
                    $( element ).addClass( this.settings.pendingClass );
                    this.pending[ element.name ] = true;
                }
            },

            stopRequest: function( element, valid ) {
                this.pendingRequest--;

                // Sometimes synchronization fails, make sure pendingRequest is never < 0
                if ( this.pendingRequest < 0 ) {
                    this.pendingRequest = 0;
                }
                delete this.pending[ element.name ];
                $( element ).removeClass( this.settings.pendingClass );
                if ( valid && this.pendingRequest === 0 && this.formSubmitted && this.form() && this.pendingRequest === 0 ) {
                    $( this.currentForm ).trigger( "submit" );

                    // Remove the hidden input that was used as a replacement for the
                    // missing submit button. The hidden input is added by `handle()`
                    // to ensure that the value of the used submit button is passed on
                    // for scripted submits triggered by this method
                    if ( this.submitButton ) {
                        $( "input:hidden[name='" + this.submitButton.name + "']", this.currentForm ).remove();
                    }

                    this.formSubmitted = false;
                } else if ( !valid && this.pendingRequest === 0 && this.formSubmitted ) {
                    $( this.currentForm ).triggerHandler( "invalid-form", [ this ] );
                    this.formSubmitted = false;
                }
            },

            previousValue: function( element, method ) {
                method = typeof method === "string" && method || "remote";

                return $.data( element, "previousValue" ) || $.data( element, "previousValue", {
                    old: null,
                    valid: true,
                    message: this.defaultMessage( element, { method: method } )
                } );
            },

            // Cleans up all forms and elements, removes validator-specific events
            destroy: function() {
                this.resetForm();

                $( this.currentForm )
                    .off( ".validate" )
                    .removeData( "validator" )
                    .find( ".validate-equalTo-blur" )
                    .off( ".validate-equalTo" )
                    .removeClass( "validate-equalTo-blur" )
                    .find( ".validate-lessThan-blur" )
                    .off( ".validate-lessThan" )
                    .removeClass( "validate-lessThan-blur" )
                    .find( ".validate-lessThanEqual-blur" )
                    .off( ".validate-lessThanEqual" )
                    .removeClass( "validate-lessThanEqual-blur" )
                    .find( ".validate-greaterThanEqual-blur" )
                    .off( ".validate-greaterThanEqual" )
                    .removeClass( "validate-greaterThanEqual-blur" )
                    .find( ".validate-greaterThan-blur" )
                    .off( ".validate-greaterThan" )
                    .removeClass( "validate-greaterThan-blur" );
            }

        },

        classRuleSettings: {
            required: { required: true },
            email: { email: true },
            url: { url: true },
            date: { date: true },
            dateISO: { dateISO: true },
            number: { number: true },
            digits: { digits: true },
            creditcard: { creditcard: true }
        },

        addClassRules: function( className, rules ) {
            if ( className.constructor === String ) {
                this.classRuleSettings[ className ] = rules;
            } else {
                $.extend( this.classRuleSettings, className );
            }
        },

        classRules: function( element ) {
            var rules = {},
                classes = $( element ).attr( "class" );

            if ( classes ) {
                $.each( classes.split( " " ), function() {
                    if ( this in $.validator.classRuleSettings ) {
                        $.extend( rules, $.validator.classRuleSettings[ this ] );
                    }
                } );
            }
            return rules;
        },

        normalizeAttributeRule: function( rules, type, method, value ) {

            // Convert the value to a number for number inputs, and for text for backwards compability
            // allows type="date" and others to be compared as strings
            if ( /min|max|step/.test( method ) && ( type === null || /number|range|text/.test( type ) ) ) {
                value = Number( value );

                // Support Opera Mini, which returns NaN for undefined minlength
                if ( isNaN( value ) ) {
                    value = undefined;
                }
            }

            if ( value || value === 0 ) {
                rules[ method ] = value;
            } else if ( type === method && type !== "range" ) {

                // Exception: the jquery validate 'range' method
                // does not test for the html5 'range' type
                rules[ type === "date" ? "dateISO" : method ] = true;
            }
        },

        attributeRules: function( element ) {
            var rules = {},
                $element = $( element ),
                type = element.getAttribute( "type" ),
                method, value;

            for ( method in $.validator.methods ) {

                // Support for <input required> in both html5 and older browsers
                if ( method === "required" ) {
                    value = element.getAttribute( method );

                    // Some browsers return an empty string for the required attribute
                    // and non-HTML5 browsers might have required="" markup
                    if ( value === "" ) {
                        value = true;
                    }

                    // Force non-HTML5 browsers to return bool
                    value = !!value;
                } else {
                    value = $element.attr( method );
                }

                this.normalizeAttributeRule( rules, type, method, value );
            }

            // 'maxlength' may be returned as -1, 2147483647 ( IE ) and 524288 ( safari ) for text inputs
            if ( rules.maxlength && /-1|2147483647|524288/.test( rules.maxlength ) ) {
                delete rules.maxlength;
            }

            return rules;
        },

        metadataRules: function (element) {
            if (!$.metadata) {
                return {};
            }

            var meta = $.data(element.form, 'validator').settings.meta;
            return meta ?
                $(element).metadata()[meta] :
                $(element).metadata();
        },
        
        dataRules: function( element ) {
            var rules = {},
                $element = $( element ),
                type = element.getAttribute( "type" ),
                method, value;

            for ( method in $.validator.methods ) {
                value = $element.data( "rule" + method.charAt( 0 ).toUpperCase() + method.substring( 1 ).toLowerCase() );

                // Cast empty attributes like `data-rule-required` to `true`
                if ( value === "" ) {
                    value = true;
                }

                this.normalizeAttributeRule( rules, type, method, value );
            }
            return rules;
        },

        staticRules: function( element ) {
            var rules = {},
                validator = $.data( element.form, "validator" );

            if ( validator.settings.rules ) {
                rules = $.validator.normalizeRule( validator.settings.rules[ element.name ] ) || {};
            }
            return rules;
        },

        normalizeRules: function( rules, element ) {

            // Handle dependency check
            $.each( rules, function( prop, val ) {

                // Ignore rule when param is explicitly false, eg. required:false
                if ( val === false ) {
                    delete rules[ prop ];
                    return;
                }
                if ( val.param || val.depends ) {
                    var keepRule = true;
                    switch ( typeof val.depends ) {
                        case "string":
                            keepRule = !!$( val.depends, element.form ).length;
                            break;
                        case "function":
                            keepRule = val.depends.call( element, element );
                            break;
                    }
                    if ( keepRule ) {
                        rules[ prop ] = val.param !== undefined ? val.param : true;
                    } else {
                        $.data( element.form, "validator" ).resetElements( $( element ) );
                        delete rules[ prop ];
                    }
                }
            } );

            // Evaluate parameters
            $.each( rules, function( rule, parameter ) {
                rules[ rule ] = typeof parameter === "function" && rule !== "normalizer" ? parameter( element ) : parameter;
            } );

            // Clean number parameters
            $.each( [ "minlength", "maxlength" ], function() {
                if ( rules[ this ] ) {
                    rules[ this ] = Number( rules[ this ] );
                }
            } );
            $.each( [ "rangelength", "range" ], function() {
                var parts;
                if ( rules[ this ] ) {
                    if ( Array.isArray( rules[ this ] ) ) {
                        rules[ this ] = [ Number( rules[ this ][ 0 ] ), Number( rules[ this ][ 1 ] ) ];
                    } else if ( typeof rules[ this ] === "string" ) {
                        parts = rules[ this ].replace( /[\[\]]/g, "" ).split( /[\s,]+/ );
                        rules[ this ] = [ Number( parts[ 0 ] ), Number( parts[ 1 ] ) ];
                    }
                }
            } );

            if ( $.validator.autoCreateRanges ) {

                // Auto-create ranges
                if ( rules.min != null && rules.max != null ) {
                    rules.range = [ rules.min, rules.max ];
                    delete rules.min;
                    delete rules.max;
                }
                if ( rules.minlength != null && rules.maxlength != null ) {
                    rules.rangelength = [ rules.minlength, rules.maxlength ];
                    delete rules.minlength;
                    delete rules.maxlength;
                }
            }

            return rules;
        },

        // Converts a simple string to a {string: true} rule, e.g., "required" to {required:true}
        normalizeRule: function( data ) {
            if ( typeof data === "string" ) {
                var transformed = {};
                $.each( data.split( /\s/ ), function() {
                    transformed[ this ] = true;
                } );
                data = transformed;
            }
            return data;
        },

        // https://jqueryvalidation.org/jQuery.validator.addMethod/
        addMethod: function( name, method, message ) {
            $.validator.methods[ name ] = method;
            $.validator.messages[ name ] = message !== undefined ? message : $.validator.messages[ name ];
            if ( method.length < 3 ) {
                $.validator.addClassRules( name, $.validator.normalizeRule( name ) );
            }
        },

        // https://jqueryvalidation.org/jQuery.validator.methods/
        methods: {

            // https://jqueryvalidation.org/required-method/
            required: function( value, element, param ) {

                // Check if dependency is met
                if ( !this.depend( param, element ) ) {
                    return "dependency-mismatch";
                }
                if ( element.nodeName.toLowerCase() === "select" ) {

                    // Could be an array for select-multiple or a string, both are fine this way
                    var val = $( element ).val();
                    return val && val.length > 0;
                }
                if ( this.checkable( element ) ) {
                    return this.getLength( value, element ) > 0;
                }
                return value !== undefined && value !== null && value.length > 0;
            },

            // https://jqueryvalidation.org/email-method/
            email: function( value, element ) {

                // From https://html.spec.whatwg.org/multipage/forms.html#valid-e-mail-address
                // Retrieved 2014-01-14
                // If you have a problem with this implementation, report a bug against the above spec
                // Or use custom methods to implement your own email validation
                return this.optional( element ) || /^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/.test( value );
            },

            // https://jqueryvalidation.org/url-method/
            url: function( value, element ) {

                // Copyright (c) 2010-2013 Diego Perini, MIT licensed
                // https://gist.github.com/dperini/729294
                // see also https://mathiasbynens.be/demo/url-regex
                // modified to allow protocol-relative URLs
                return this.optional( element ) || /^(?:(?:(?:https?|ftp):)?\/\/)(?:(?:[^\]\[?\/<~#`!@$^&*()+=}|:";',>{ ]|%[0-9A-Fa-f]{2})+(?::(?:[^\]\[?\/<~#`!@$^&*()+=}|:";',>{ ]|%[0-9A-Fa-f]{2})*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z0-9\u00a1-\uffff][a-z0-9\u00a1-\uffff_-]{0,62})?[a-z0-9\u00a1-\uffff]\.)+(?:[a-z\u00a1-\uffff]{2,}\.?))(?::\d{2,5})?(?:[/?#]\S*)?$/i.test( value );
            },

            // https://jqueryvalidation.org/date-method/
            date: ( function() {
                var called = false;

                return function( value, element ) {
                    if ( !called ) {
                        called = true;
                        if ( this.settings.debug && window.console ) {
                            console.warn(
                                "The `date` method is deprecated and will be removed in version '2.0.0'.\n" +
                                "Please don't use it, since it relies on the Date constructor, which\n" +
                                "behaves very differently across browsers and locales. Use `dateISO`\n" +
                                "instead or one of the locale specific methods in `localizations/`\n" +
                                "and `additional-methods.js`."
                            );
                        }
                    }

                    return this.optional( element ) || !/Invalid|NaN/.test( new Date( value ).toString() );
                };
            }() ),

            // https://jqueryvalidation.org/dateISO-method/
            dateISO: function( value, element ) {
                return this.optional( element ) || /^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])$/.test( value );
            },

            // https://jqueryvalidation.org/number-method/
            number: function( value, element ) {
                return this.optional( element ) || /^(?:-?\d+|-?\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test( value );
            },

            // https://jqueryvalidation.org/digits-method/
            digits: function( value, element ) {
                return this.optional( element ) || /^\d+$/.test( value );
            },

            // https://jqueryvalidation.org/minlength-method/
            minlength: function( value, element, param ) {
                var length = Array.isArray( value ) ? value.length : this.getLength( value, element );
                return this.optional( element ) || length >= param;
            },

            // https://jqueryvalidation.org/maxlength-method/
            maxlength: function( value, element, param ) {
                var length = Array.isArray( value ) ? value.length : this.getLength( value, element );
                return this.optional( element ) || length <= param;
            },

            // https://jqueryvalidation.org/rangelength-method/
            rangelength: function( value, element, param ) {
                var length = Array.isArray( value ) ? value.length : this.getLength( value, element );
                return this.optional( element ) || ( length >= param[ 0 ] && length <= param[ 1 ] );
            },

            // https://jqueryvalidation.org/min-method/
            min: function( value, element, param ) {
                return this.optional( element ) || value >= param;
            },

            // https://jqueryvalidation.org/max-method/
            max: function( value, element, param ) {
                return this.optional( element ) || value <= param;
            },

            // https://jqueryvalidation.org/range-method/
            range: function( value, element, param ) {
                return this.optional( element ) || ( value >= param[ 0 ] && value <= param[ 1 ] );
            },

            // https://jqueryvalidation.org/step-method/
            step: function( value, element, param ) {
                var type = $( element ).attr( "type" ),
                    errorMessage = "Step attribute on input type " + type + " is not supported.",
                    supportedTypes = [ "text", "number", "range" ],
                    re = new RegExp( "\\b" + type + "\\b" ),
                    notSupported = type && !re.test( supportedTypes.join() ),
                    decimalPlaces = function( num ) {
                        var match = ( "" + num ).match( /(?:\.(\d+))?$/ );
                        if ( !match ) {
                            return 0;
                        }

                        // Number of digits right of decimal point.
                        return match[ 1 ] ? match[ 1 ].length : 0;
                    },
                    toInt = function( num ) {
                        return Math.round( num * Math.pow( 10, decimals ) );
                    },
                    valid = true,
                    decimals;

                // Works only for text, number and range input types
                // TODO find a way to support input types date, datetime, datetime-local, month, time and week
                if ( notSupported ) {
                    throw new Error( errorMessage );
                }

                decimals = decimalPlaces( param );

                // Value can't have too many decimals
                if ( decimalPlaces( value ) > decimals || toInt( value ) % toInt( param ) !== 0 ) {
                    valid = false;
                }

                return this.optional( element ) || valid;
            },

            // https://jqueryvalidation.org/equalTo-method/
            equalTo: function( value, element, param ) {

                // Bind to the blur event of the target in order to revalidate whenever the target field is updated
                var target = $( param );
                if ( this.settings.onfocusout && target.not( ".validate-equalTo-blur" ).length ) {
                    target.addClass( "validate-equalTo-blur" ).on( "blur.validate-equalTo", function() {
                        $( element ).valid();
                    } );
                }
                return value === target.val();
            },

            // https://jqueryvalidation.org/remote-method/
            remote: function( value, element, param, method ) {
                if ( this.optional( element ) ) {
                    return "dependency-mismatch";
                }

                method = typeof method === "string" && method || "remote";

                var previous = this.previousValue( element, method ),
                    validator, data, optionDataString;

                if ( !this.settings.messages[ element.name ] ) {
                    this.settings.messages[ element.name ] = {};
                }
                previous.originalMessage = previous.originalMessage || this.settings.messages[ element.name ][ method ];
                this.settings.messages[ element.name ][ method ] = previous.message;

                param = typeof param === "string" && { url: param } || param;
                optionDataString = $.param( $.extend( { data: value }, param.data ) );
                if ( previous.old === optionDataString ) {
                    return previous.valid;
                }

                previous.old = optionDataString;
                validator = this;
                this.startRequest( element );
                data = {};
                data[ element.name ] = value;
                $.ajax( $.extend( true, {
                    mode: "abort",
                    port: "validate" + element.name,
                    dataType: "json",
                    data: data,
                    context: validator.currentForm,
                    success: function( response ) {
                        var valid = response === true || response === "true",
                            errors, message, submitted;

                        validator.settings.messages[ element.name ][ method ] = previous.originalMessage;
                        if ( valid ) {
                            submitted = validator.formSubmitted;
                            validator.resetInternals();
                            validator.toHide = validator.errorsFor( element );
                            validator.formSubmitted = submitted;
                            validator.successList.push( element );
                            validator.invalid[ element.name ] = false;
                            validator.showErrors();
                        } else {
                            errors = {};
                            message = response || validator.defaultMessage( element, { method: method, parameters: value } );
                            errors[ element.name ] = previous.message = message;
                            validator.invalid[ element.name ] = true;
                            validator.showErrors( errors );
                        }
                        previous.valid = valid;
                        validator.stopRequest( element, valid );
                    }
                }, param ) );
                return "pending";
            }
        }

    } );

// Ajax mode: abort
// usage: $.ajax({ mode: "abort"[, port: "uniqueport"]});
// if mode:"abort" is used, the previous request on that port (port can be undefined) is aborted via XMLHttpRequest.abort()

    var pendingRequests = {},
        ajax;

// Use a prefilter if available (1.5+)
    if ( $.ajaxPrefilter ) {
        $.ajaxPrefilter( function( settings, _, xhr ) {
            var port = settings.port;
            if ( settings.mode === "abort" ) {
                if ( pendingRequests[ port ] ) {
                    pendingRequests[ port ].abort();
                }
                pendingRequests[ port ] = xhr;
            }
        } );
    } else {

        // Proxy ajax
        ajax = $.ajax;
        $.ajax = function( settings ) {
            var mode = ( "mode" in settings ? settings : $.ajaxSettings ).mode,
                port = ( "port" in settings ? settings : $.ajaxSettings ).port;
            if ( mode === "abort" ) {
                if ( pendingRequests[ port ] ) {
                    pendingRequests[ port ].abort();
                }
                pendingRequests[ port ] = ajax.apply( this, arguments );
                return pendingRequests[ port ];
            }
            return ajax.apply( this, arguments );
        };
    }
    return $;
}));