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jquery.autocomplete.js
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jquery.autocomplete.js
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/**
* jQuery Auto Complete - built with jQuery 1.7.0
* Author : Richard Sussex
* Twitter : ukwebdeveloper
* GitHub : ukwebdeveloper)
*/
(function( $ ){
$.fn.autoComplete = function( options ) {
// the element name
var elementName = $(this).attr('name');
// add a class to this element
$(this).addClass('autoComplete-active');
// remove the name of this field
$(this).attr('name', null);
// create a hidden field with the same name
var hiddenField = '<input type="hidden" class="autoComplete-hiddenField" name="'+elementName+'" />';
// create defaults, extend them with any options that were provided
var settings = $.extend( {
'url' : null,
'minchars' : 4
}, options);
// wrap this element
$(this).wrap('<div class="autoComplete-holder">');
// reference the parent wrapper
var parentWrapper = $(this).parent('.autoComplete-holder');
// add the hidden field
$(parentWrapper).prepend(hiddenField);
// on key up
$(this).keyup(function(event) {
// keys not triggered
var ignoredKeys = [8, 13, 16, 17, 18, 19, 20, 27, 32, 33, 34, 35, 37, 38, 39, 40, 36, 45, 46, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123];
// if event key code not in ignoredKeys are
if($.inArray(event.keyCode, ignoredKeys) == -1) {
// remove existing .list-holder
$('.list-holder', parentWrapper).remove();
// the value of this element
var currentValue = $(this).val();
// store a reference to this for use inside $.ajax
var e = this;
// if the length is greater than or equal to settings.minchars
if(currentValue.length >= settings.minchars) {
// get the data with $.ajax
$.ajax({
url : settings.url, // url
dataType : 'json', // json dataType
data : 'searchTerm='+currentValue, // send the serach term
success : function(data) {
// remove the list holder
$('.list-holder', parentWrapper).remove();
// html var
var html = '';
// loop through the data and create li fields
for(var i in data) {
var html = html + '<li id="'+data[i].id+'">'+data[i].label+'</li>';
}
// check the position of e and append accordingly
if($(e).css('position') == 'absolute') {
// position of this element
var position = $(e).position();
// top of this element
var top = position.top;
// add the outer height of this element to the top value
top = (top + $(e).outerHeight());
// left of this element
var left = position.left;
// append the list-holder
$(parentWrapper).append('<div class="list-holder" style="position:absolute;left:'+left+'px;top:'+top+'px;width:'+($(e).outerWidth()-2)+'px;"><ul>'+html+'</ul></div>');
} else {
// append the list-holder
$(parentWrapper).append('<div class="list-holder" style="position:absolute;width:'+($(e).outerWidth()-2)+'px;"><ul>'+html+'</ul></div>');
}
// add a click function to the list-holder li's (the search terms)
$('ul li', parentWrapper).click(function() {
// put the id of the selection in the hidden field
$('.autoComplete-hiddenField', parentWrapper).val($(this).attr('id'));
// put the value of the selection in the search field
$(e).val($(this).text());
// slideUp the list-holder
$('.list-holder', parentWrapper).slideUp(400,function() {
// remove on list-holder from the DOM
$('.list-holder', parentWrapper).remove();
});
});
}
});
}
}
});
};
})( jQuery );