/
jquery.form.js
1531 lines (1239 loc) · 40.6 KB
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jquery.form.js
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/*!
* jQuery Form Plugin
* version: 4.2.2
* Requires jQuery v1.7.2 or later
* Project repository: https://github.com/jquery-form/form
* Copyright 2017 Kevin Morris
* Copyright 2006 M. Alsup
* Dual licensed under the LGPL-2.1+ or MIT licenses
* https://github.com/jquery-form/form#license
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
/* global ActiveXObject */
/* eslint-disable */
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(['jquery'], factory);
} else if (typeof module === 'object' && module.exports) {
// Node/CommonJS
module.exports = function( root, jQuery ) {
if (typeof jQuery === 'undefined') {
// require('jQuery') returns a factory that requires window to build a jQuery instance, we normalize how we use modules
// that require this pattern but the window provided is a noop if it's defined (how jquery works)
if (typeof window !== 'undefined') {
jQuery = require('jquery');
}
else {
jQuery = require('jquery')(root);
}
}
factory(jQuery);
return jQuery;
};
} else {
// Browser globals
factory(jQuery);
}
}(function ($) {
/* eslint-enable */
'use strict';
/*
Usage Note:
-----------
Do not use both ajaxSubmit and ajaxForm on the same form. These
functions are mutually exclusive. Use ajaxSubmit if you want
to bind your own submit handler to the form. For example,
$(document).ready(function() {
$('#myForm').on('submit', function(e) {
e.preventDefault(); // <-- important
$(this).ajaxSubmit({
target: '#output'
});
});
});
Use ajaxForm when you want the plugin to manage all the event binding
for you. For example,
$(document).ready(function() {
$('#myForm').ajaxForm({
target: '#output'
});
});
You can also use ajaxForm with delegation (requires jQuery v1.7+), so the
form does not have to exist when you invoke ajaxForm:
$('#myForm').ajaxForm({
delegation: true,
target: '#output'
});
When using ajaxForm, the ajaxSubmit function will be invoked for you
at the appropriate time.
*/
var rCRLF = /\r?\n/g;
/**
* Feature detection
*/
var feature = {};
feature.fileapi = $('<input type="file">').get(0).files !== undefined;
feature.formdata = (typeof window.FormData !== 'undefined');
var hasProp = !!$.fn.prop;
// attr2 uses prop when it can but checks the return type for
// an expected string. This accounts for the case where a form
// contains inputs with names like "action" or "method"; in those
// cases "prop" returns the element
$.fn.attr2 = function() {
if (!hasProp) {
return this.attr.apply(this, arguments);
}
var val = this.prop.apply(this, arguments);
if ((val && val.jquery) || typeof val === 'string') {
return val;
}
return this.attr.apply(this, arguments);
};
/**
* ajaxSubmit() provides a mechanism for immediately submitting
* an HTML form using AJAX.
*
* @param {object|string} options jquery.form.js parameters or custom url for submission
* @param {object} data extraData
* @param {string} dataType ajax dataType
* @param {function} onSuccess ajax success callback function
*/
$.fn.ajaxSubmit = function(options, data, dataType, onSuccess) {
// fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
if (!this.length) {
log('ajaxSubmit: skipping submit process - no element selected');
return this;
}
/* eslint consistent-this: ["error", "$form"] */
var method, action, url, $form = this;
if (typeof options === 'function') {
options = {success: options};
} else if (typeof options === 'string' || (options === false && arguments.length > 0)) {
options = {
'url' : options,
'data' : data,
'dataType' : dataType
};
if (typeof onSuccess === 'function') {
options.success = onSuccess;
}
} else if (typeof options === 'undefined') {
options = {};
}
method = options.method || options.type || this.attr2('method');
action = options.url || this.attr2('action');
url = (typeof action === 'string') ? $.trim(action) : '';
url = url || window.location.href || '';
if (url) {
// clean url (don't include hash vaue)
url = (url.match(/^([^#]+)/) || [])[1];
}
options = $.extend(true, {
url : url,
success : $.ajaxSettings.success,
type : method || $.ajaxSettings.type,
iframeSrc : /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank' // eslint-disable-line no-script-url
}, options);
// hook for manipulating the form data before it is extracted;
// convenient for use with rich editors like tinyMCE or FCKEditor
var veto = {};
this.trigger('form-pre-serialize', [this, options, veto]);
if (veto.veto) {
log('ajaxSubmit: submit vetoed via form-pre-serialize trigger');
return this;
}
// provide opportunity to alter form data before it is serialized
if (options.beforeSerialize && options.beforeSerialize(this, options) === false) {
log('ajaxSubmit: submit aborted via beforeSerialize callback');
return this;
}
var traditional = options.traditional;
if (typeof traditional === 'undefined') {
traditional = $.ajaxSettings.traditional;
}
var elements = [];
var qx, a = this.formToArray(options.semantic, elements, options.filtering);
if (options.data) {
var optionsData = $.isFunction(options.data) ? options.data(a) : options.data;
options.extraData = optionsData;
qx = $.param(optionsData, traditional);
}
// give pre-submit callback an opportunity to abort the submit
if (options.beforeSubmit && options.beforeSubmit(a, this, options) === false) {
log('ajaxSubmit: submit aborted via beforeSubmit callback');
return this;
}
// fire vetoable 'validate' event
this.trigger('form-submit-validate', [a, this, options, veto]);
if (veto.veto) {
log('ajaxSubmit: submit vetoed via form-submit-validate trigger');
return this;
}
var q = $.param(a, traditional);
if (qx) {
q = (q ? (q + '&' + qx) : qx);
}
if (options.type.toUpperCase() === 'GET') {
options.url += (options.url.indexOf('?') >= 0 ? '&' : '?') + q;
options.data = null; // data is null for 'get'
} else {
options.data = q; // data is the query string for 'post'
}
var callbacks = [];
if (options.resetForm) {
callbacks.push(function() {
$form.resetForm();
});
}
if (options.clearForm) {
callbacks.push(function() {
$form.clearForm(options.includeHidden);
});
}
// perform a load on the target only if dataType is not provided
if (!options.dataType && options.target) {
var oldSuccess = options.success || function(){};
callbacks.push(function(data, textStatus, jqXHR) {
var successArguments = arguments,
fn = options.replaceTarget ? 'replaceWith' : 'html';
$(options.target)[fn](data).each(function(){
oldSuccess.apply(this, successArguments);
});
});
} else if (options.success) {
if ($.isArray(options.success)) {
$.merge(callbacks, options.success);
} else {
callbacks.push(options.success);
}
}
options.success = function(data, status, xhr) { // jQuery 1.4+ passes xhr as 3rd arg
var context = options.context || this; // jQuery 1.4+ supports scope context
for (var i = 0, max = callbacks.length; i < max; i++) {
callbacks[i].apply(context, [data, status, xhr || $form, $form]);
}
};
if (options.error) {
var oldError = options.error;
options.error = function(xhr, status, error) {
var context = options.context || this;
oldError.apply(context, [xhr, status, error, $form]);
};
}
if (options.complete) {
var oldComplete = options.complete;
options.complete = function(xhr, status) {
var context = options.context || this;
oldComplete.apply(context, [xhr, status, $form]);
};
}
// are there files to upload?
// [value] (issue #113), also see comment:
// https://github.com/malsup/form/commit/588306aedba1de01388032d5f42a60159eea9228#commitcomment-2180219
var fileInputs = $('input[type=file]:enabled', this).filter(function() {
return $(this).val() !== '';
});
var hasFileInputs = fileInputs.length > 0;
var mp = 'multipart/form-data';
var multipart = ($form.attr('enctype') === mp || $form.attr('encoding') === mp);
var fileAPI = feature.fileapi && feature.formdata;
log('fileAPI :' + fileAPI);
var shouldUseFrame = (hasFileInputs || multipart) && !fileAPI;
var jqxhr;
// options.iframe allows user to force iframe mode
// 06-NOV-09: now defaulting to iframe mode if file input is detected
if (options.iframe !== false && (options.iframe || shouldUseFrame)) {
// hack to fix Safari hang (thanks to Tim Molendijk for this)
// see: http://groups.google.com/group/jquery-dev/browse_thread/thread/36395b7ab510dd5d
if (options.closeKeepAlive) {
$.get(options.closeKeepAlive, function() {
jqxhr = fileUploadIframe(a);
});
} else {
jqxhr = fileUploadIframe(a);
}
} else if ((hasFileInputs || multipart) && fileAPI) {
jqxhr = fileUploadXhr(a);
} else {
jqxhr = $.ajax(options);
}
$form.removeData('jqxhr').data('jqxhr', jqxhr);
// clear element array
for (var k = 0; k < elements.length; k++) {
elements[k] = null;
}
// fire 'notify' event
this.trigger('form-submit-notify', [this, options]);
return this;
// utility fn for deep serialization
function deepSerialize(extraData) {
var serialized = $.param(extraData, options.traditional).split('&');
var len = serialized.length;
var result = [];
var i, part;
for (i = 0; i < len; i++) {
// #252; undo param space replacement
serialized[i] = serialized[i].replace(/\+/g, ' ');
part = serialized[i].split('=');
// #278; use array instead of object storage, favoring array serializations
result.push([decodeURIComponent(part[0]), decodeURIComponent(part[1])]);
}
return result;
}
// XMLHttpRequest Level 2 file uploads (big hat tip to francois2metz)
function fileUploadXhr(a) {
var formdata = new FormData();
for (var i = 0; i < a.length; i++) {
formdata.append(a[i].name, a[i].value);
}
if (options.extraData) {
var serializedData = deepSerialize(options.extraData);
for (i = 0; i < serializedData.length; i++) {
if (serializedData[i]) {
formdata.append(serializedData[i][0], serializedData[i][1]);
}
}
}
options.data = null;
var s = $.extend(true, {}, $.ajaxSettings, options, {
contentType : false,
processData : false,
cache : false,
type : method || 'POST'
});
if (options.uploadProgress) {
// workaround because jqXHR does not expose upload property
s.xhr = function() {
var xhr = $.ajaxSettings.xhr();
if (xhr.upload) {
xhr.upload.addEventListener('progress', function(event) {
var percent = 0;
var position = event.loaded || event.position; /* event.position is deprecated */
var total = event.total;
if (event.lengthComputable) {
percent = Math.ceil(position / total * 100);
}
options.uploadProgress(event, position, total, percent);
}, false);
}
return xhr;
};
}
s.data = null;
var beforeSend = s.beforeSend;
s.beforeSend = function(xhr, o) {
// Send FormData() provided by user
if (options.formData) {
o.data = options.formData;
} else {
o.data = formdata;
}
if (beforeSend) {
beforeSend.call(this, xhr, o);
}
};
return $.ajax(s);
}
// private function for handling file uploads (hat tip to YAHOO!)
function fileUploadIframe(a) {
var form = $form[0], el, i, s, g, id, $io, io, xhr, sub, n, timedOut, timeoutHandle;
var deferred = $.Deferred();
// #341
deferred.abort = function(status) {
xhr.abort(status);
};
if (a) {
// ensure that every serialized input is still enabled
for (i = 0; i < elements.length; i++) {
el = $(elements[i]);
if (hasProp) {
el.prop('disabled', false);
} else {
el.removeAttr('disabled');
}
}
}
s = $.extend(true, {}, $.ajaxSettings, options);
s.context = s.context || s;
id = 'jqFormIO' + new Date().getTime();
var ownerDocument = form.ownerDocument;
var $body = $form.closest('body');
if (s.iframeTarget) {
$io = $(s.iframeTarget, ownerDocument);
n = $io.attr2('name');
if (!n) {
$io.attr2('name', id);
} else {
id = n;
}
} else {
$io = $('<iframe name="' + id + '" src="' + s.iframeSrc + '" />', ownerDocument);
$io.css({position: 'absolute', top: '-1000px', left: '-1000px'});
}
io = $io[0];
xhr = { // mock object
aborted : 0,
responseText : null,
responseXML : null,
status : 0,
statusText : 'n/a',
getAllResponseHeaders : function() {},
getResponseHeader : function() {},
setRequestHeader : function() {},
abort : function(status) {
var e = (status === 'timeout' ? 'timeout' : 'aborted');
log('aborting upload... ' + e);
this.aborted = 1;
try { // #214, #257
if (io.contentWindow.document.execCommand) {
io.contentWindow.document.execCommand('Stop');
}
} catch (ignore) {}
$io.attr('src', s.iframeSrc); // abort op in progress
xhr.error = e;
if (s.error) {
s.error.call(s.context, xhr, e, status);
}
if (g) {
$.event.trigger('ajaxError', [xhr, s, e]);
}
if (s.complete) {
s.complete.call(s.context, xhr, e);
}
}
};
g = s.global;
// trigger ajax global events so that activity/block indicators work like normal
if (g && $.active++ === 0) {
$.event.trigger('ajaxStart');
}
if (g) {
$.event.trigger('ajaxSend', [xhr, s]);
}
if (s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false) {
if (s.global) {
$.active--;
}
deferred.reject();
return deferred;
}
if (xhr.aborted) {
deferred.reject();
return deferred;
}
// add submitting element to data if we know it
sub = form.clk;
if (sub) {
n = sub.name;
if (n && !sub.disabled) {
s.extraData = s.extraData || {};
s.extraData[n] = sub.value;
if (sub.type === 'image') {
s.extraData[n + '.x'] = form.clk_x;
s.extraData[n + '.y'] = form.clk_y;
}
}
}
var CLIENT_TIMEOUT_ABORT = 1;
var SERVER_ABORT = 2;
function getDoc(frame) {
/* it looks like contentWindow or contentDocument do not
* carry the protocol property in ie8, when running under ssl
* frame.document is the only valid response document, since
* the protocol is know but not on the other two objects. strange?
* "Same origin policy" http://en.wikipedia.org/wiki/Same_origin_policy
*/
var doc = null;
// IE8 cascading access check
try {
if (frame.contentWindow) {
doc = frame.contentWindow.document;
}
} catch (err) {
// IE8 access denied under ssl & missing protocol
log('cannot get iframe.contentWindow document: ' + err);
}
if (doc) { // successful getting content
return doc;
}
try { // simply checking may throw in ie8 under ssl or mismatched protocol
doc = frame.contentDocument ? frame.contentDocument : frame.document;
} catch (err) {
// last attempt
log('cannot get iframe.contentDocument: ' + err);
doc = frame.document;
}
return doc;
}
// Rails CSRF hack (thanks to Yvan Barthelemy)
var csrf_token = $('meta[name=csrf-token]').attr('content');
var csrf_param = $('meta[name=csrf-param]').attr('content');
if (csrf_param && csrf_token) {
s.extraData = s.extraData || {};
s.extraData[csrf_param] = csrf_token;
}
// take a breath so that pending repaints get some cpu time before the upload starts
function doSubmit() {
// make sure form attrs are set
var t = $form.attr2('target'),
a = $form.attr2('action'),
mp = 'multipart/form-data',
et = $form.attr('enctype') || $form.attr('encoding') || mp;
// update form attrs in IE friendly way
form.setAttribute('target', id);
if (!method || /post/i.test(method)) {
form.setAttribute('method', 'POST');
}
if (a !== s.url) {
form.setAttribute('action', s.url);
}
// ie borks in some cases when setting encoding
if (!s.skipEncodingOverride && (!method || /post/i.test(method))) {
$form.attr({
encoding : 'multipart/form-data',
enctype : 'multipart/form-data'
});
}
// support timout
if (s.timeout) {
timeoutHandle = setTimeout(function() {
timedOut = true; cb(CLIENT_TIMEOUT_ABORT);
}, s.timeout);
}
// look for server aborts
function checkState() {
try {
var state = getDoc(io).readyState;
log('state = ' + state);
if (state && state.toLowerCase() === 'uninitialized') {
setTimeout(checkState, 50);
}
} catch (e) {
log('Server abort: ', e, ' (', e.name, ')');
cb(SERVER_ABORT); // eslint-disable-line callback-return
if (timeoutHandle) {
clearTimeout(timeoutHandle);
}
timeoutHandle = undefined;
}
}
// add "extra" data to form if provided in options
var extraInputs = [];
try {
if (s.extraData) {
for (var n in s.extraData) {
if (s.extraData.hasOwnProperty(n)) {
// if using the $.param format that allows for multiple values with the same name
if ($.isPlainObject(s.extraData[n]) && s.extraData[n].hasOwnProperty('name') && s.extraData[n].hasOwnProperty('value')) {
extraInputs.push(
$('<input type="hidden" name="' + s.extraData[n].name + '">', ownerDocument).val(s.extraData[n].value)
.appendTo(form)[0]);
} else {
extraInputs.push(
$('<input type="hidden" name="' + n + '">', ownerDocument).val(s.extraData[n])
.appendTo(form)[0]);
}
}
}
}
if (!s.iframeTarget) {
// add iframe to doc and submit the form
$io.appendTo($body);
}
if (io.attachEvent) {
io.attachEvent('onload', cb);
} else {
io.addEventListener('load', cb, false);
}
setTimeout(checkState, 15);
try {
form.submit();
} catch (err) {
// just in case form has element with name/id of 'submit'
var submitFn = document.createElement('form').submit;
submitFn.apply(form);
}
} finally {
// reset attrs and remove "extra" input elements
form.setAttribute('action', a);
form.setAttribute('enctype', et); // #380
if (t) {
form.setAttribute('target', t);
} else {
$form.removeAttr('target');
}
$(extraInputs).remove();
}
}
if (s.forceSync) {
doSubmit();
} else {
setTimeout(doSubmit, 10); // this lets dom updates render
}
var data, doc, domCheckCount = 50, callbackProcessed;
function cb(e) {
if (xhr.aborted || callbackProcessed) {
return;
}
doc = getDoc(io);
if (!doc) {
log('cannot access response document');
e = SERVER_ABORT;
}
if (e === CLIENT_TIMEOUT_ABORT && xhr) {
xhr.abort('timeout');
deferred.reject(xhr, 'timeout');
return;
} else if (e === SERVER_ABORT && xhr) {
xhr.abort('server abort');
deferred.reject(xhr, 'error', 'server abort');
return;
}
if (!doc || doc.location.href === s.iframeSrc) {
// response not received yet
if (!timedOut) {
return;
}
}
if (io.detachEvent) {
io.detachEvent('onload', cb);
} else {
io.removeEventListener('load', cb, false);
}
var status = 'success', errMsg;
try {
if (timedOut) {
throw 'timeout';
}
var isXml = s.dataType === 'xml' || doc.XMLDocument || $.isXMLDoc(doc);
log('isXml=' + isXml);
if (!isXml && window.opera && (doc.body === null || !doc.body.innerHTML)) {
if (--domCheckCount) {
// in some browsers (Opera) the iframe DOM is not always traversable when
// the onload callback fires, so we loop a bit to accommodate
log('requeing onLoad callback, DOM not available');
setTimeout(cb, 250);
return;
}
// let this fall through because server response could be an empty document
// log('Could not access iframe DOM after mutiple tries.');
// throw 'DOMException: not available';
}
// log('response detected');
var docRoot = doc.body ? doc.body : doc.documentElement;
xhr.responseText = docRoot ? docRoot.innerHTML : null;
xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
if (isXml) {
s.dataType = 'xml';
}
xhr.getResponseHeader = function(header){
var headers = {'content-type': s.dataType};
return headers[header.toLowerCase()];
};
// support for XHR 'status' & 'statusText' emulation :
if (docRoot) {
xhr.status = Number(docRoot.getAttribute('status')) || xhr.status;
xhr.statusText = docRoot.getAttribute('statusText') || xhr.statusText;
}
var dt = (s.dataType || '').toLowerCase();
var scr = /(json|script|text)/.test(dt);
if (scr || s.textarea) {
// see if user embedded response in textarea
var ta = doc.getElementsByTagName('textarea')[0];
if (ta) {
xhr.responseText = ta.value;
// support for XHR 'status' & 'statusText' emulation :
xhr.status = Number(ta.getAttribute('status')) || xhr.status;
xhr.statusText = ta.getAttribute('statusText') || xhr.statusText;
} else if (scr) {
// account for browsers injecting pre around json response
var pre = doc.getElementsByTagName('pre')[0];
var b = doc.getElementsByTagName('body')[0];
if (pre) {
xhr.responseText = pre.textContent ? pre.textContent : pre.innerText;
} else if (b) {
xhr.responseText = b.textContent ? b.textContent : b.innerText;
}
}
} else if (dt === 'xml' && !xhr.responseXML && xhr.responseText) {
xhr.responseXML = toXml(xhr.responseText); // eslint-disable-line no-use-before-define
}
try {
data = httpData(xhr, dt, s); // eslint-disable-line no-use-before-define
} catch (err) {
status = 'parsererror';
xhr.error = errMsg = (err || status);
}
} catch (err) {
log('error caught: ', err);
status = 'error';
xhr.error = errMsg = (err || status);
}
if (xhr.aborted) {
log('upload aborted');
status = null;
}
if (xhr.status) { // we've set xhr.status
status = ((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304) ? 'success' : 'error';
}
// ordering of these callbacks/triggers is odd, but that's how $.ajax does it
if (status === 'success') {
if (s.success) {
s.success.call(s.context, data, 'success', xhr);
}
deferred.resolve(xhr.responseText, 'success', xhr);
if (g) {
$.event.trigger('ajaxSuccess', [xhr, s]);
}
} else if (status) {
if (typeof errMsg === 'undefined') {
errMsg = xhr.statusText;
}
if (s.error) {
s.error.call(s.context, xhr, status, errMsg);
}
deferred.reject(xhr, 'error', errMsg);
if (g) {
$.event.trigger('ajaxError', [xhr, s, errMsg]);
}
}
if (g) {
$.event.trigger('ajaxComplete', [xhr, s]);
}
if (g && !--$.active) {
$.event.trigger('ajaxStop');
}
if (s.complete) {
s.complete.call(s.context, xhr, status);
}
callbackProcessed = true;
if (s.timeout) {
clearTimeout(timeoutHandle);
}
// clean up
setTimeout(function() {
if (!s.iframeTarget) {
$io.remove();
} else { // adding else to clean up existing iframe response.
$io.attr('src', s.iframeSrc);
}
xhr.responseXML = null;
}, 100);
}
var toXml = $.parseXML || function(s, doc) { // use parseXML if available (jQuery 1.5+)
if (window.ActiveXObject) {
doc = new ActiveXObject('Microsoft.XMLDOM');
doc.async = 'false';
doc.loadXML(s);
} else {
doc = (new DOMParser()).parseFromString(s, 'text/xml');
}
return (doc && doc.documentElement && doc.documentElement.nodeName !== 'parsererror') ? doc : null;
};
var parseJSON = $.parseJSON || function(s) {
/* jslint evil:true */
return window['eval']('(' + s + ')'); // eslint-disable-line dot-notation
};
var httpData = function(xhr, type, s) { // mostly lifted from jq1.4.4
var ct = xhr.getResponseHeader('content-type') || '',
xml = ((type === 'xml' || !type) && ct.indexOf('xml') >= 0),
data = xml ? xhr.responseXML : xhr.responseText;
if (xml && data.documentElement.nodeName === 'parsererror') {
if ($.error) {
$.error('parsererror');
}
}
if (s && s.dataFilter) {
data = s.dataFilter(data, type);
}
if (typeof data === 'string') {
if ((type === 'json' || !type) && ct.indexOf('json') >= 0) {
data = parseJSON(data);
} else if ((type === 'script' || !type) && ct.indexOf('javascript') >= 0) {
$.globalEval(data);
}
}
return data;
};
return deferred;
}
};
/**
* ajaxForm() provides a mechanism for fully automating form submission.
*
* The advantages of using this method instead of ajaxSubmit() are:
*
* 1: This method will include coordinates for <input type="image"> elements (if the element
* is used to submit the form).
* 2. This method will include the submit element's name/value data (for the element that was
* used to submit the form).
* 3. This method binds the submit() method to the form for you.
*
* The options argument for ajaxForm works exactly as it does for ajaxSubmit. ajaxForm merely
* passes the options argument along after properly binding events for submit elements and
* the form itself.
*/
$.fn.ajaxForm = function(options, data, dataType, onSuccess) {
if (typeof options === 'string' || (options === false && arguments.length > 0)) {
options = {
'url' : options,
'data' : data,
'dataType' : dataType
};
if (typeof onSuccess === 'function') {
options.success = onSuccess;
}
}
options = options || {};
options.delegation = options.delegation && $.isFunction($.fn.on);
// in jQuery 1.3+ we can fix mistakes with the ready state
if (!options.delegation && this.length === 0) {
var o = {s: this.selector, c: this.context};
if (!$.isReady && o.s) {
log('DOM not ready, queuing ajaxForm');
$(function() {
$(o.s, o.c).ajaxForm(options);
});
return this;
}
// is your DOM ready? http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
log('terminating; zero elements found by selector' + ($.isReady ? '' : ' (DOM not ready)'));