2 * A method for submitting an HTML form using AJAX, as opposed to the
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3 * standard page-load way.
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5 * This method attempts to mimic the functionality of the original form
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6 * as best as possible (duplicating the method, action, and exact contents
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9 * There are three different resulting operations that can occur, after
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10 * your form has been submitted.
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12 * 1. The form is submitted and a callback is fired, letting you know
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14 * $("form").ajaxSubmit(function(){
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15 * alert("all done!");
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18 * 2. The form is submitted and the resulting HTML contents are injected
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19 * into the page, at your specified location.
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20 * $("form").ajaxSubmit("#destination");
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22 * 3. The form is submitted and the results returned from the server are
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23 * automatically executed (useful for having the server return more
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24 * Javascript commands to execute).
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25 * $("form").ajaxSubmit();
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27 * Additionally, an optional pre-submit callback can be provided. If it,
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28 * when called with the contents of the form, returns false, the form will
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31 * Finally, both the URL and method of the form submission can be
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32 * overidden using the 'url' and 'mth' arguments.
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34 * @param target arg for the target id element to render
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35 * @param post_cb callback after any results are returned
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36 * @param pre_cb callback function before submission
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37 * @param url form action override
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38 * @param mth form method override
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39 * @return "this" object
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40 * @see ajaxForm(), serialize(), load(), $.ajax()
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41 * @author Mark Constable (markc@renta.net)
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42 * @author G. vd Hoven, Mike Alsup, Sam Collett, John Resig
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44 $.fn.ajaxSubmit = function(target, post_cb, pre_cb, url, mth) {
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45 if ( !this.vars ) this.serialize();
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47 if (pre_cb && pre_cb.constructor == Function)
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48 if (pre_cb(this.vars) === false) return;
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50 var f = this.get(0);
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51 var url = url || f.action || '';
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52 var mth = mth || f.method || 'POST';
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54 if (target && target.constructor == Function) {
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55 $.ajax(mth, url, $.param(this.vars), target);
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56 } else if (target && target.constructor == String) {
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57 $(target).load(url, this.vars, post_cb);
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59 this.vars.push({name: 'evaljs', value: 1});
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60 $.ajax(mth, url, $.param(this.vars), function(r) {
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61 eval(r.responseText);
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69 * This function can be used to turn any HTML form into a form
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70 * that submits using AJAX only.
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72 * The purpose of using this method, instead of the ajaxSubmit()
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73 * and submit() methods, is to make absolutely sure that the
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74 * coordinates of <input type="image"/> elements are transmitted
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75 * correctly OR figuring out exactly which <input type="submit"/>
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76 * element was clicked to submit the form.
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78 * If neither of the above points are important to you, then you'll
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79 * probably just want to stick with the simpler ajaxSubmit() function.
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81 * Usage examples, similar to ajaxSubmit():
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83 * 1. Just eval the results returned from the backend.
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84 * $('#form-id').ajaxForm();
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86 * 2. Render backend results directly to target ID (expects (x)HTML).
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87 * $('#form-id').ajaxForm('#target-id');
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89 * 3. Submit to backend URL (form action) then call this function.
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90 * $('#form-id').ajaxForm(post_callback);
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92 * 4. Load target ID with backend results then call a function.
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93 * $('#form-id').ajaxForm('#target-id', post_callback);
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95 * 5. Call a browser function (for validation) and then (optionally)
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96 * load server results to target ID.
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97 * $('#form-id').ajaxForm('#target-id', null, pre_callback);
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99 * 6. Call validation function first then load server results to
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100 * target ID and then also call a browser function.
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101 * $('#form-id').ajaxForm('#target-id', post_callback, pre_callback);
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103 * @param target arg for the target id element to render
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104 * @param post_cb callback after any results are returned
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105 * @param pre_cb callback function before submission
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106 * @return the jQuery Object
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107 * @see serialize(), ajaxSubmit()
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108 * @author Mark Constable (markc@renta.net)
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109 * @author G. vd Hoven, Mike Alsup, Sam Collett, John Resig
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111 $.fn.ajaxForm = function(target, post_cb, pre_cb) {
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112 return this.each(function(){
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113 $('input[@type="submit"],input[@type="image"]', this).click(function(ev){
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114 this.form.clicked = this;
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115 if (ev.offsetX != undefined) {
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116 this.form.clicked_x = ev.offsetX;
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117 this.form.clicked_y = ev.offsetY;
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119 this.form.clicked_x = ev.pageX - this.offsetLeft;
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120 this.form.clicked_y = ev.pageY - this.offsetTop;
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123 }).submit(function(e){
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124 e.preventDefault();
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125 $(this).ajaxSubmit(target, post_cb, pre_cb);
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131 * A simple wrapper function that sits around the .serialize()
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132 * method, allowing you to easily extract the data stored within
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137 * 1. Serialize the contents of a form to a & and = delmited string:
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138 * $.param( $("form").formdata() );
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140 * @return An array of name/value pairs representing the form
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142 # @author John Resig
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144 $.fn.formdata = function(){
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150 * This function gathers form element variables into an array that
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151 * is embedded into the current "this" variable as "this.vars". It
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152 * is normally used in conjunction with formdata() or ajaxSubmit() but can
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153 * be used standalone as long as you don't need the x and y coordinates
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154 * associated with an <input type="image"/> element..
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156 * Standalone usage examples:
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158 * 1. Gather form vars and return array to LHS variable.
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159 * var myform = $('#form-id').serialize();
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161 * 2. Provide a serialized URL-ready string (after 1. above).
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162 * var mystring = $.param(myform.vars);
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164 * 3. Gather form vars and send to RHS plugin via "this.vars".
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165 * $('#form-id').serialize().some_other_plugin();
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167 * @return the jQuery Object
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168 * @see ajaxForm(), ajaxSubmit()
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169 * @author Mark Constable (markc@renta.net)
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170 * @author G. vd Hoven, Mike Alsup, Sam Collett, John Resig
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172 $.fn.serialize = function() {
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174 var ok = {INPUT:true, TEXTAREA:true, OPTION:true};
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176 $('*', this).each(function() {
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177 if (this.disabled || this.type == 'reset' ||
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178 (this.type == 'checkbox' && !this.checked) ||
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179 (this.type == 'radio' && !this.checked)) return;
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181 if (this.type == 'submit' || this.type == 'image') {
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182 if (this.form.clicked != this) return;
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184 if (this.type == 'image') {
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185 if (this.form.clicked_x) {
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186 a.push({name: this.name+'_x', value: this.form.clicked_x});
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187 a.push({name: this.name+'_y', value: this.form.clicked_y});
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193 if (!ok[this.nodeName.toUpperCase()])
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196 var par = this.parentNode;
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197 var p = par.nodeName.toUpperCase();
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198 if ((p == 'SELECT' || p == 'OPTGROUP') && !this.selected) return;
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201 if (!n) n = (p == 'OPTGROUP') ? par.parentNode.name : par.name;
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202 if (n == undefined) return;
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204 a.push({name: n, value: this.value});
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