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git-svn-id: http://svn.automattic.com/wordpress/trunk@4959 1a063a9b-81f0-0310-95a4-ce76da25c4cd
645 lines
24 KiB
JavaScript
645 lines
24 KiB
JavaScript
/*
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* jQuery form plugin
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* @requires jQuery v1.0.3
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*
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* Dual licensed under the MIT and GPL licenses:
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* http://www.opensource.org/licenses/mit-license.php
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* http://www.gnu.org/licenses/gpl.html
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*
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* Revision: $Id$
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* Version: 0.9
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*/
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/**
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* ajaxSubmit() provides a mechanism for submitting an HTML form using AJAX.
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*
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* ajaxSubmit accepts a single argument which can be either a success callback function
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* or an options Object. If a function is provided it will be invoked upon successful
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* completion of the submit and will be passed the response from the server.
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* If an options Object is provided, the following attributes are supported:
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*
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* target: Identifies the element(s) in the page to be updated with the server response.
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* This value may be specified as a jQuery selection string, a jQuery object,
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* or a DOM element.
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* default value: null
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*
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* url: URL to which the form data will be submitted.
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* default value: value of form's 'action' attribute
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*
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* method: @deprecated use 'type'
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* type: The method in which the form data should be submitted, 'GET' or 'POST'.
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* default value: value of form's 'method' attribute (or 'GET' if none found)
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*
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* before: @deprecated use 'beforeSubmit'
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* beforeSubmit: Callback method to be invoked before the form is submitted.
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* default value: null
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*
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* after: @deprecated use 'success'
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* success: Callback method to be invoked after the form has been successfully submitted
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* and the response has been returned from the server
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* default value: null
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*
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* dataType: Expected dataType of the response. One of: null, 'xml', 'script', or 'json'
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* default value: null
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*
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* semantic: Boolean flag indicating whether data must be submitted in semantic order (slower).
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* default value: false
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*
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* resetForm: Boolean flag indicating whether the form should be reset if the submit is successful
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*
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* clearForm: Boolean flag indicating whether the form should be cleared if the submit is successful
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*
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*
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* The 'beforeSubmit' callback can be provided as a hook for running pre-submit logic or for
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* validating the form data. If the 'beforeSubmit' callback returns false then the form will
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* not be submitted. The 'beforeSubmit' callback is invoked with three arguments: the form data
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* in array format, the jQuery object, and the options object passed into ajaxSubmit.
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* The form data array takes the following form:
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*
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* [ { name: 'username', value: 'jresig' }, { name: 'password', value: 'secret' } ]
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*
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* If a 'success' callback method is provided it is invoked after the response has been returned
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* from the server. It is passed the responseText or responseXML value (depending on dataType).
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* See jQuery.ajax for further details.
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*
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*
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* The dataType option provides a means for specifying how the server response should be handled.
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* This maps directly to the jQuery.httpData method. The following values are supported:
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*
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* 'xml': if dataType == 'xml' the server response is treated as XML and the 'after'
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* callback method, if specified, will be passed the responseXML value
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* 'json': if dataType == 'json' the server response will be evaluted and passed to
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* the 'after' callback, if specified
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* 'script': if dataType == 'script' the server response is evaluated in the global context
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*
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*
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* Note that it does not make sense to use both the 'target' and 'dataType' options. If both
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* are provided the target will be ignored.
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*
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* The semantic argument can be used to force form serialization in semantic order.
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* This is normally true anyway, unless the form contains input elements of type='image'.
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* If your form must be submitted with name/value pairs in semantic order and your form
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* contains an input of type='image" then pass true for this arg, otherwise pass false
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* (or nothing) to avoid the overhead for this logic.
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*
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*
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* When used on its own, ajaxSubmit() is typically bound to a form's submit event like this:
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*
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* $("#form-id").submit(function() {
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* $(this).ajaxSubmit(options);
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* return false; // cancel conventional submit
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* });
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*
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* When using ajaxForm(), however, this is done for you.
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*
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* @example
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* $('#myForm').ajaxSubmit(function(data) {
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* alert('Form submit succeeded! Server returned: ' + data);
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* });
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* @desc Submit form and alert server response
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*
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*
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* @example
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* var options = {
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* target: '#myTargetDiv'
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc Submit form and update page element with server response
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*
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*
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* @example
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* var options = {
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* success: function(responseText) {
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* alert(responseText);
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* }
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc Submit form and alert the server response
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*
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*
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* @example
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* var options = {
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* beforeSubmit: function(formArray, jqForm) {
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* if (formArray.length == 0) {
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* alert('Please enter data.');
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* return false;
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* }
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* }
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc Pre-submit validation which aborts the submit operation if form data is empty
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*
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*
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* @example
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* var options = {
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* url: myJsonUrl.php,
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* dataType: 'json',
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* success: function(data) {
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* // 'data' is an object representing the the evaluated json data
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* }
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc json data returned and evaluated
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*
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*
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* @example
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* var options = {
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* url: myXmlUrl.php,
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* dataType: 'xml',
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* success: function(responseXML) {
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* // responseXML is XML document object
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* var data = $('myElement', responseXML).text();
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* }
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc XML data returned from server
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*
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*
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* @example
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* var options = {
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* resetForm: true
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc submit form and reset it if successful
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*
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* @example
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* $('#myForm).submit(function() {
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* $(this).ajaxSubmit();
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* return false;
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* });
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* @desc Bind form's submit event to use ajaxSubmit
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*
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*
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* @name ajaxSubmit
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* @type jQuery
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* @param options object literal containing options which control the form submission process
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* @cat Plugins/Form
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* @return jQuery
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* @see formToArray
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* @see ajaxForm
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* @see $.ajax
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* @author jQuery Community
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*/
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jQuery.fn.ajaxSubmit = function(options) {
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if (typeof options == 'function')
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options = { success: options };
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options = jQuery.extend({
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url: this.attr('action') || '',
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method: this.attr('method') || 'GET'
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}, options || {});
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// remap deprecated options (temporarily)
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options.success = options.success || options.after;
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options.beforeSubmit = options.beforeSubmit || options.before;
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options.type = options.type || options.method;
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var a = this.formToArray(options.semantic);
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// give pre-submit callback an opportunity to abort the submit
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if (options.beforeSubmit && options.beforeSubmit(a, this, options) === false) return this;
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var q = jQuery.param(a);
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if (options.type.toUpperCase() == 'GET') {
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// if url already has a '?' then append args after '&'
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options.url += (options.url.indexOf('?') >= 0 ? '&' : '?') + q;
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options.data = null; // data is null for 'get'
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}
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else
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options.data = q; // data is the query string for 'post'
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var $form = this, callbacks = [];
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if (options.resetForm) callbacks.push(function() { $form.resetForm(); });
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if (options.clearForm) callbacks.push(function() { $form.clearForm(); });
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// perform a load on the target only if dataType is not provided
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if (!options.dataType && options.target) {
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var oldSuccess = options.success || function(){};
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callbacks.push(function(data, status) {
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jQuery(options.target).attr("innerHTML", data).evalScripts().each(oldSuccess, [data, status]);
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});
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}
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else if (options.success)
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callbacks.push(options.success);
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options.success = function(data, status) {
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for (var i=0, max=callbacks.length; i < max; i++)
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callbacks[i](data, status);
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};
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jQuery.ajax(options);
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return this;
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};
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/**
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* ajaxForm() provides a mechanism for fully automating form submission.
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*
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* The advantages of using this method instead of ajaxSubmit() are:
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*
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* 1: This method will include coordinates for <input type="image" /> elements (if the element
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* is used to submit the form).
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* 2. This method will include the submit element's name/value data (for the element that was
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* used to submit the form).
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* 3. This method binds the submit() method to the form for you.
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*
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* Note that for accurate x/y coordinates of image submit elements in all browsers
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* you need to also use the "dimensions" plugin (this method will auto-detect its presence).
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*
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* The options argument for ajaxForm works exactly as it does for ajaxSubmit. ajaxForm merely
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* passes the options argument along after properly binding events for submit elements and
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* the form itself. See ajaxSubmit for a full description of the options argument.
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*
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*
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* @example
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* var options = {
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* target: '#myTargetDiv'
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* };
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* $('#myForm').ajaxSForm(options);
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* @desc Bind form's submit event so that 'myTargetDiv' is updated with the server response
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* when the form is submitted.
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*
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*
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* @example
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* var options = {
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* success: function(responseText) {
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* alert(responseText);
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* }
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc Bind form's submit event so that server response is alerted after the form is submitted.
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*
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*
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* @example
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* var options = {
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* beforeSubmit: function(formArray, jqForm) {
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* if (formArray.length == 0) {
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* alert('Please enter data.');
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* return false;
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* }
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* }
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* };
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* $('#myForm').ajaxSubmit(options);
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* @desc Bind form's submit event so that pre-submit callback is invoked before the form
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* is submitted.
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*
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*
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* @name ajaxForm
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* @param options object literal containing options which control the form submission process
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* @return jQuery
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* @cat Plugins/Form
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* @type jQuery
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* @see ajaxSubmit
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* @author jQuery Community
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*/
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jQuery.fn.ajaxForm = function(options) {
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return this.each(function() {
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jQuery("input:submit,input:image,button:submit", this).click(function(ev) {
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var $form = this.form;
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$form.clk = this;
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if (this.type == 'image') {
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if (ev.offsetX != undefined) {
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$form.clk_x = ev.offsetX;
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$form.clk_y = ev.offsetY;
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} else if (typeof jQuery.fn.offset == 'function') { // try to use dimensions plugin
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var offset = jQuery(this).offset();
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$form.clk_x = ev.pageX - offset.left;
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$form.clk_y = ev.pageY - offset.top;
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} else {
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$form.clk_x = ev.pageX - this.offsetLeft;
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$form.clk_y = ev.pageY - this.offsetTop;
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}
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}
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// clear form vars
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setTimeout(function() {
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$form.clk = $form.clk_x = $form.clk_y = null;
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}, 10);
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})
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}).submit(function(e) {
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jQuery(this).ajaxSubmit(options);
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return false;
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});
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};
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/**
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* formToArray() gathers form element data into an array of objects that can
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* be passed to any of the following ajax functions: $.get, $.post, or load.
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* Each object in the array has both a 'name' and 'value' property. An example of
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* an array for a simple login form might be:
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*
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* [ { name: 'username', value: 'jresig' }, { name: 'password', value: 'secret' } ]
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*
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* It is this array that is passed to pre-submit callback functions provided to the
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* ajaxSubmit() and ajaxForm() methods.
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*
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* The semantic argument can be used to force form serialization in semantic order.
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* This is normally true anyway, unless the form contains input elements of type='image'.
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* If your form must be submitted with name/value pairs in semantic order and your form
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* contains an input of type='image" then pass true for this arg, otherwise pass false
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* (or nothing) to avoid the overhead for this logic.
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*
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* @example var data = $("#myForm").formToArray();
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* $.post( "myscript.cgi", data );
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* @desc Collect all the data from a form and submit it to the server.
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*
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* @name formToArray
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* @param semantic true if serialization must maintain strict semantic ordering of elements (slower)
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* @type Array<Object>
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* @cat Plugins/Form
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* @see ajaxForm
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* @see ajaxSubmit
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* @author jQuery Community
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*/
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jQuery.fn.formToArray = function(semantic) {
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var a = [];
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if (this.length == 0) return a;
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var form = this[0];
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var els = semantic ? form.getElementsByTagName('*') : form.elements;
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if (!els) return a;
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for(var i=0, max=els.length; i < max; i++) {
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var el = els[i];
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var n = el.name;
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if (!n) continue;
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if (semantic && form.clk && el.type == "image") {
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// handle image inputs on the fly when semantic == true
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if(!el.disabled && form.clk == el)
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a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
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continue;
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}
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var v = jQuery.fieldValue(el, true);
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if (v === null) continue;
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if (v.constructor == Array) {
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for(var j=0, jmax=v.length; j < jmax; j++)
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a.push({name: n, value: v[j]});
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}
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else
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a.push({name: n, value: v});
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}
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if (!semantic && form.clk) {
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// input type=='image' are not found in elements array! handle them here
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var inputs = form.getElementsByTagName("input");
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for(var i=0, max=inputs.length; i < max; i++) {
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var input = inputs[i];
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var n = input.name;
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if(n && !input.disabled && input.type == "image" && form.clk == input)
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a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
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}
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}
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return a;
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};
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/**
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* Serializes form data into a 'submittable' string. This method will return a string
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* in the format: name1=value1&name2=value2
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*
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* The semantic argument can be used to force form serialization in semantic order.
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* If your form must be submitted with name/value pairs in semantic order then pass
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* true for this arg, otherwise pass false (or nothing) to avoid the overhead for
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* this logic (which can be significant for very large forms).
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*
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* @example var data = $("#myForm").formSerialize();
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* $.ajax('POST', "myscript.cgi", data);
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* @desc Collect all the data from a form into a single string
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*
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* @name formSerialize
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* @param semantic true if serialization must maintain strict semantic ordering of elements (slower)
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* @type String
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* @cat Plugins/Form
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* @see formToArray
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* @author jQuery Community
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*/
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jQuery.fn.formSerialize = function(semantic) {
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//hand off to jQuery.param for proper encoding
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return jQuery.param(this.formToArray(semantic));
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};
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/**
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* Serializes all field elements in the jQuery object into a query string.
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* This method will return a string in the format: name1=value1&name2=value2
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*
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* The successful argument controls whether or not serialization is limited to
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* 'successful' controls (per http://www.w3.org/TR/html4/interact/forms.html#successful-controls).
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* The default value of the successful argument is true.
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*
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* @example var data = $("input").formSerialize();
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* @desc Collect the data from all successful input elements into a query string
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*
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* @example var data = $(":radio").formSerialize();
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* @desc Collect the data from all successful radio input elements into a query string
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*
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* @example var data = $("#myForm :checkbox").formSerialize();
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* @desc Collect the data from all successful checkbox input elements in myForm into a query string
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*
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* @example var data = $("#myForm :checkbox").formSerialize(false);
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* @desc Collect the data from all checkbox elements in myForm (even the unchecked ones) into a query string
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*
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* @example var data = $(":input").formSerialize();
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* @desc Collect the data from all successful input, select, textarea and button elements into a query string
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*
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* @name fieldSerialize
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* @param successful true if only successful controls should be serialized (default is true)
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* @type String
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* @cat Plugins/Form
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*/
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jQuery.fn.fieldSerialize = function(successful) {
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var a = [];
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this.each(function() {
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var n = this.name;
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if (!n) return;
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var v = jQuery.fieldValue(this, successful);
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if (v && v.constructor == Array) {
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for (var i=0,max=v.length; i < max; i++)
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a.push({name: n, value: v[i]});
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}
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else if (v !== null && typeof v != 'undefined')
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a.push({name: this.name, value: v});
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});
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//hand off to jQuery.param for proper encoding
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return jQuery.param(a);
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};
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/**
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* Returns the value of the field element in the jQuery object. If there is more than one field element
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* in the jQuery object the value of the first successful one is returned.
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*
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* The successful argument controls whether or not the field element must be 'successful'
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* (per http://www.w3.org/TR/html4/interact/forms.html#successful-controls).
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* The default value of the successful argument is true. If this value is false then
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* the value of the first field element in the jQuery object is returned.
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*
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* Note: If no valid value can be determined the return value will be undifined.
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*
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* Note: The fieldValue returned for a select-multiple element or for a checkbox input will
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* always be an array if it is not undefined.
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*
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*
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* @example var data = $("#myPasswordElement").formValue();
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* @desc Gets the current value of the myPasswordElement element
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*
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* @example var data = $("#myForm :input").formValue();
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* @desc Get the value of the first successful control in the jQuery object.
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*
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* @example var data = $("#myForm :checkbox").formValue();
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* @desc Get the array of values for the first set of successful checkbox controls in the jQuery object.
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|
*
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* @example var data = $("#mySingleSelect").formValue();
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* @desc Get the value of the select control
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|
*
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* @example var data = $("#myMultiSelect").formValue();
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* @desc Get the array of selected values for the select-multiple control
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|
*
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|
* @name fieldValue
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* @param Boolean successful true if value returned must be for a successful controls (default is true)
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* @type String or Array<String>
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|
* @cat Plugins/Form
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|
*/
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jQuery.fn.fieldValue = function(successful) {
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var cbVal, cbName;
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|
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// loop until we find a value
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for (var i=0, max=this.length; i < max; i++) {
|
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var el = this[i];
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var v = jQuery.fieldValue(el, successful);
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if (v === null || typeof v == 'undefined' || (v.constructor == Array && !v.length))
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continue;
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|
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// for checkboxes, consider multiple elements, for everything else just return first valid value
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if (el.type != 'checkbox') return v;
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|
|
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cbName = cbName || el.name;
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|
if (cbName != el.name) // return if we hit a checkbox with a different name
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|
return cbVal;
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|
cbVal = cbVal || [];
|
|
cbVal.push(v);
|
|
}
|
|
return cbVal;
|
|
};
|
|
|
|
/**
|
|
* Returns the value of the field element.
|
|
*
|
|
* The successful argument controls whether or not the field element must be 'successful'
|
|
* (per http://www.w3.org/TR/html4/interact/forms.html#successful-controls).
|
|
* The default value of the successful argument is true. If the given element is not
|
|
* successful and the successful arg is not false then the returned value will be null.
|
|
*
|
|
* Note: The fieldValue returned for a select-multiple element will always be an array.
|
|
*
|
|
* @example var data = jQuery.fieldValue($("#myPasswordElement")[0]);
|
|
* @desc Gets the current value of the myPasswordElement element
|
|
*
|
|
* @name fieldValue
|
|
* @param Element el The DOM element for which the value will be returned
|
|
* @param Boolean successful true if value returned must be for a successful controls (default is true)
|
|
* @type String or Array<String>
|
|
* @cat Plugins/Form
|
|
*/
|
|
jQuery.fieldValue = function(el, successful) {
|
|
var n = el.name, t = el.type, tag = el.tagName.toLowerCase();
|
|
if (typeof successful == 'undefined') successful = true;
|
|
|
|
if (successful && ( !n || el.disabled || t == 'reset' ||
|
|
(t == 'checkbox' || t == 'radio') && !el.checked ||
|
|
(t == 'submit' || t == 'image') && el.form && el.form.clk != el ||
|
|
tag == 'select' && el.selectedIndex == -1))
|
|
return null;
|
|
|
|
if (tag == 'select') {
|
|
var index = el.selectedIndex;
|
|
if (index < 0) return null;
|
|
var a = [], ops = el.options;
|
|
var one = (t == 'select-one');
|
|
var max = (one ? index+1 : ops.length);
|
|
for(var i=(one ? index : 0); i < max; i++) {
|
|
var op = ops[i];
|
|
if (op.selected) {
|
|
// extra pain for IE...
|
|
var v = jQuery.browser.msie && !(op.attributes['value'].specified) ? op.text : op.value;
|
|
if (one) return v;
|
|
a.push(v);
|
|
}
|
|
}
|
|
return a;
|
|
}
|
|
return el.value;
|
|
};
|
|
|
|
|
|
/**
|
|
* Clears the form data. Takes the following actions on the form's input fields:
|
|
* - input text fields will have their 'value' property set to the empty string
|
|
* - select elements will have their 'selectedIndex' property set to -1
|
|
* - checkbox and radio inputs will have their 'checked' property set to false
|
|
* - inputs of type submit, button, reset, and hidden will *not* be effected
|
|
* - button elements will *not* be effected
|
|
*
|
|
* @example $('form').clearForm();
|
|
* @desc Clears all forms on the page.
|
|
*
|
|
* @name clearForm
|
|
* @type jQuery
|
|
* @cat Plugins/Form
|
|
* @see resetForm
|
|
*/
|
|
jQuery.fn.clearForm = function() {
|
|
return this.each(function() {
|
|
jQuery('input,select,textarea', this).clearFields();
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Clears the selected form elements. Takes the following actions on the matched elements:
|
|
* - input text fields will have their 'value' property set to the empty string
|
|
* - select elements will have their 'selectedIndex' property set to -1
|
|
* - checkbox and radio inputs will have their 'checked' property set to false
|
|
* - inputs of type submit, button, reset, and hidden will *not* be effected
|
|
* - button elements will *not* be effected
|
|
*
|
|
* @example $('.myInputs').clearFields();
|
|
* @desc Clears all inputs with class myInputs
|
|
*
|
|
* @name clearFields
|
|
* @type jQuery
|
|
* @cat Plugins/Form
|
|
* @see clearForm
|
|
*/
|
|
jQuery.fn.clearFields = jQuery.fn.clearInputs = function() {
|
|
return this.each(function() {
|
|
var t = this.type, tag = this.tagName.toLowerCase();
|
|
if (t == 'text' || t == 'password' || tag == 'textarea')
|
|
this.value = '';
|
|
else if (t == 'checkbox' || t == 'radio')
|
|
this.checked = false;
|
|
else if (tag == 'select')
|
|
this.selectedIndex = -1;
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* Resets the form data. Causes all form elements to be reset to their original value.
|
|
*
|
|
* @example $('form').resetForm();
|
|
* @desc Resets all forms on the page.
|
|
*
|
|
* @name resetForm
|
|
* @type jQuery
|
|
* @cat Plugins/Form
|
|
* @see clearForm
|
|
*/
|
|
jQuery.fn.resetForm = function() {
|
|
return this.each(function() {
|
|
// guard against an input with the name of 'reset'
|
|
// note that IE reports the reset function as an 'object'
|
|
if (typeof this.reset == 'function' || (typeof this.reset == 'object' && !this.reset.nodeType))
|
|
this.reset();
|
|
});
|
|
};
|