jquery form 插件 分类： JavaScript 2013-01-21 13:59 1779人阅读 评论(0) 收藏
代码一看就能懂，不做解释了，详细文档
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>jQuery Form</title>
<!--引入js库-->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="jquery.form.js"></script>
</head>
<body>
<!--html-->
<form id="myForm1" action="http://blog.csdn.net/a497785609" method="post">
<div>
<input type="hidden" name="Hidden" value="hiddenValue" />
<table>
<tbody>
<tr>
<td>
Name:
</td>
<td>
<input name="Name" type="text" value="MyName1" />
</td>
</tr>
<tr>
<td>
Password:
</td>
<td>
<input name="Password" type="password" />
</td>
</tr>
<tr>
<td>
Multiple:
</td>
<td>
<select name="Multiple" multiple="multiple">
<optgroup label="Group 1">
<option value="one" selected="selected">One</option>
<option value="two">Two</option>
<option value="three">Three</option>
</optgroup>
<optgroup label="Group 2">
<option value="four">Four</option>
<option value="five">Five</option>
<option value="six">Six</option>
</optgroup>
</select>
</td>
</tr>
<tr>
<td>
Single:
</td>
<td>
<select name="Single">
<option value="one" selected="selected">One</option>
<option value="two">Two</option>
<option value="three">Three</option>
</select>
</td>
</tr>
<tr>
<td>
Single2:
</td>
<td>
<select name="Single2">
<optgroup label="Group 1">
<option value="A" selected="selected">A</option>
<option value="B">B</option>
<option value="C">C</option>
</optgroup>
<optgroup label="Group 2">
<option value="D">D</option>
<option value="E">E</option>
<option value="F">F</option>
</optgroup>
</select>
</td>
</tr>
<tr>
<td>
Check:
</td>
<td>
<input type="checkbox" name="Check" value="1" />
<input type="checkbox" name="Check" value="2" />
<input type="checkbox" name="Check" value="3" />
</td>
</tr>
<tr>
<td>
Radio:
</td>
<td>
<input type="radio" name="Radio" value="1" />
<input type="radio" name="Radio" value="2" />
<input type="radio" name="Radio" value="3" />
</td>
</tr>
<tr>
<td>
Text:
</td>
<td>
<textarea name="Text" rows="2" cols="20">This is Form1</textarea>
</td>
</tr>
</tbody>
</table>
<input type="reset" name="resetButton " value="Reset" />
<input type="submit" name="submitButton" value="Submit" />
</div>
</form>
<!--/html-->
<!--javaScript-->
<script type="text/javascript">
$(document).ready(function () {
var options = {
target: '#output1', // target element(s) to be updated with server response
beforeSubmit: showRequest, // pre-submit callback
success: showResponse // post-submit callback
// other available options:
//url: url // override for form's 'action' attribute
//type: type // 'get' or 'post', override for form's 'method' attribute
//dataType: null // 'xml', 'script', or 'json' (expected server response type)
//clearForm: true // clear all form fields after successful submit
//resetForm: true // reset the form after successful submit
// $.ajax options can be used here too, for example:
//timeout: 3000
};
// bind form using 'ajaxForm'
$('#myForm1').ajaxForm(options);
});
// pre-submit callback
function showRequest(formData, jqForm, options) {
// formData is an array; here we use $.param to convert it to a string to display it
// but the form plugin does this for you automatically when it submits the data
var queryString = $.param(formData);
// jqForm is a jQuery object encapsulating the form element. To access the
// DOM element for the form do this:
// var formElement = jqForm[0];
var form = jqForm[0];
alert('About to submit: \n\n' + form.Name.value + queryString);
// here we could return false to prevent the form from being submitted;
// returning anything other than false will allow the form submit to continue
return true;
}
// post-submit callback
function showResponse(responseText, statusText) {
// for normal html responses, the first argument to the success callback
// is the XMLHttpRequest object's responseText property
// if the ajaxForm method was passed an Options Object with the dataType
// property set to 'xml' then the first argument to the success callback
// is the XMLHttpRequest object's responseXML property
// if the ajaxForm method was passed an Options Object with the dataType
// property set to 'json' then the first argument to the success callback
// is the json data object returned by the server
alert('status: ' + statusText + '\n\nresponseText: \n' + responseText +
'\n\nThe output div should have already been updated with the responseText.');
}
</script>
<!--/javaScript-->
</body>
</html>
/*
* jQuery Form Plugin
* version: 2.16 (17-OCT-2008)
* @requires jQuery v1.2.2 or later
*
* Examples and documentation at: http://malsup.com/jquery/form/
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* Revision: $Id: jquery.form.js 5718 2008-06-07 15:02:19Z malsup $
*/
;(function($) {
/*
Usage Note:
-----------
Do not use both ajaxSubmit and ajaxForm on the same form. These
functions are intended to be exclusive. Use ajaxSubmit if you want
to bind your own submit handler to the form. For example,
$(document).ready(function() {
$('#myForm').bind('submit', function() {
$(this).ajaxSubmit({
target: '#output'
});
return false; // <-- important!
});
});
Use ajaxForm when you want the plugin to manage all the event binding
for you. For example,
$(document).ready(function() {
$('#myForm').ajaxForm({
target: '#output'
});
});
When using ajaxForm, the ajaxSubmit function will be invoked for you
at the appropriate time.
*/
/**
* ajaxSubmit() provides a mechanism for immediately submitting
* an HTML form using AJAX.
*/
$.fn.ajaxSubmit = function(options) {
// fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
if (!this.length) {
log('ajaxSubmit: skipping submit process - no element selected');
return this;
}
if (typeof options == 'function')
options = { success: options };
options = $.extend({
url: this.attr('action') || window.location.toString(),
type: this.attr('method') || 'GET'
}, 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;
}
var a = this.formToArray(options.semantic);
if (options.data) {
options.extraData = options.data;
for (var n in options.data) {
if(options.data[n] instanceof Array) {
for (var k in options.data[n])
a.push( { name: n, value: options.data[n][k] } )
}
else
a.push( { name: n, value: options.data[n] } );
}
}
// 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);
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 $form = this, callbacks = [];
if (options.resetForm) callbacks.push(function() { $form.resetForm(); });
if (options.clearForm) callbacks.push(function() { $form.clearForm(); });
// 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) {
$(options.target).html(data).each(oldSuccess, arguments);
});
}
else if (options.success)
callbacks.push(options.success);
options.success = function(data, status) {
for (var i=0, max=callbacks.length; i < max; i++)
callbacks[i].apply(options, [data, status, $form]);
};
// are there files to upload?
var files = $('input:file', this).fieldValue();
var found = false;
for (var j=0; j < files.length; j++)
if (files[j])
found = true;
// options.iframe allows user to force iframe mode
if (options.iframe || found) {
// hack to fix Safari hang (thanks to Tim Molendijk for this)
// see: http://groups.google.com/group/jquery-dev/browse_thread/thread/36395b7ab510dd5d
if ($.browser.safari && options.closeKeepAlive)
$.get(options.closeKeepAlive, fileUpload);
else
fileUpload();
}
else
$.ajax(options);
// fire 'notify' event
this.trigger('form-submit-notify', [this, options]);
return this;
// private function for handling file uploads (hat tip to YAHOO!)
function fileUpload() {
var form = $form[0];
if ($(':input[@name=submit]', form).length) {
alert('Error: Form elements must not be named "submit".');
return;
}
var opts = $.extend({}, $.ajaxSettings, options);
var s = jQuery.extend(true, {}, $.extend(true, {}, $.ajaxSettings), opts);
var id = 'jqFormIO' + (new Date().getTime());
var $io = $('<iframe id="' + id + '" name="' + id + '" />');
var io = $io[0];
if ($.browser.msie || $.browser.opera)
io.src = 'javascript:false;document.write("");';
$io.css({ position: 'absolute', top: '-1000px', left: '-1000px' });
var xhr = { // mock object
aborted: 0,
responseText: null,
responseXML: null,
status: 0,
statusText: 'n/a',
getAllResponseHeaders: function() {},
getResponseHeader: function() {},
setRequestHeader: function() {},
abort: function() {
this.aborted = 1;
$io.attr('src','about:blank'); // abort op in progress
}
};
var g = opts.global;
// trigger ajax global events so that activity/block indicators work like normal
if (g && ! $.active++) $.event.trigger("ajaxStart");
if (g) $.event.trigger("ajaxSend", [xhr, opts]);
if (s.beforeSend && s.beforeSend(xhr, s) === false) {
s.global && jQuery.active--;
return;
}
if (xhr.aborted)
return;
var cbInvoked = 0;
var timedOut = 0;
// add submitting element to data if we know it
var sub = form.clk;
if (sub) {
var n = sub.name;
if (n && !sub.disabled) {
options.extraData = options.extraData || {};
options.extraData[n] = sub.value;
if (sub.type == "image") {
options.extraData[name+'.x'] = form.clk_x;
options.extraData[name+'.y'] = form.clk_y;
}
}
}
// take a breath so that pending repaints get some cpu time before the upload starts
setTimeout(function() {
// make sure form attrs are set
var t = $form.attr('target'), a = $form.attr('action');
$form.attr({
target: id,
method: 'POST',
action: opts.url
});
// ie borks in some cases when setting encoding
if (! options.skipEncodingOverride) {
$form.attr({
encoding: 'multipart/form-data',
enctype: 'multipart/form-data'
});
}
// support timout
if (opts.timeout)
setTimeout(function() { timedOut = true; cb(); }, opts.timeout);
// add "extra" data to form if provided in options
var extraInputs = [];
try {
if (options.extraData)
for (var n in options.extraData)
extraInputs.push(
$('<input type="hidden" name="'+n+'" value="'+options.extraData[n]+'" />')
.appendTo(form)[0]);
// add iframe to doc and submit the form
$io.appendTo('body');
io.attachEvent ? io.attachEvent('onload', cb) : io.addEventListener('load', cb, false);
form.submit();
}
finally {
// reset attrs and remove "extra" input elements
$form.attr('action', a);
t ? $form.attr('target', t) : $form.removeAttr('target');
$(extraInputs).remove();
}
}, 10);
function cb() {
if (cbInvoked++) return;
io.detachEvent ? io.detachEvent('onload', cb) : io.removeEventListener('load', cb, false);
var operaHack = 0;
var ok = true;
try {
if (timedOut) throw 'timeout';
// extract the server response from the iframe
var data, doc;
doc = io.contentWindow ? io.contentWindow.document : io.contentDocument ? io.contentDocument : io.document;
if (doc.body == null && !operaHack && $.browser.opera) {
// In Opera 9.2.x the iframe DOM is not always traversable when
// the onload callback fires so we give Opera 100ms to right itself
operaHack = 1;
cbInvoked--;
setTimeout(cb, 100);
return;
}
xhr.responseText = doc.body ? doc.body.innerHTML : null;
xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
xhr.getResponseHeader = function(header){
var headers = {'content-type': opts.dataType};
return headers[header];
};
if (opts.dataType == 'json' || opts.dataType == 'script') {
var ta = doc.getElementsByTagName('textarea')[0];
xhr.responseText = ta ? ta.value : xhr.responseText;
}
else if (opts.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
xhr.responseXML = toXml(xhr.responseText);
}
data = $.httpData(xhr, opts.dataType);
}
catch(e){
ok = false;
$.handleError(opts, xhr, 'error', e);
}
// ordering of these callbacks/triggers is odd, but that's how $.ajax does it
if (ok) {
opts.success(data, 'success');
if (g) $.event.trigger("ajaxSuccess", [xhr, opts]);
}
if (g) $.event.trigger("ajaxComplete", [xhr, opts]);
if (g && ! --$.active) $.event.trigger("ajaxStop");
if (opts.complete) opts.complete(xhr, ok ? 'success' : 'error');
// clean up
setTimeout(function() {
$io.remove();
xhr.responseXML = null;
}, 100);
};
function toXml(s, doc) {
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.tagName != 'parsererror') ? doc : null;
};
};
};
/**
* 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) {
return this.ajaxFormUnbind().bind('submit.form-plugin',function() {
$(this).ajaxSubmit(options);
return false;
}).each(function() {
// store options in hash
$(":submit,input:image", this).bind('click.form-plugin',function(e) {
var form = this.form;
form.clk = this;
if (this.type == 'image') {
if (e.offsetX != undefined) {
form.clk_x = e.offsetX;
form.clk_y = e.offsetY;
} else if (typeof $.fn.offset == 'function') { // try to use dimensions plugin
var offset = $(this).offset();
form.clk_x = e.pageX - offset.left;
form.clk_y = e.pageY - offset.top;
} else {
form.clk_x = e.pageX - this.offsetLeft;
form.clk_y = e.pageY - this.offsetTop;
}
}
// clear form vars
setTimeout(function() { form.clk = form.clk_x = form.clk_y = null; }, 10);
});
});
};
// ajaxFormUnbind unbinds the event handlers that were bound by ajaxForm
$.fn.ajaxFormUnbind = function() {
this.unbind('submit.form-plugin');
return this.each(function() {
$(":submit,input:image", this).unbind('click.form-plugin');
});
};
/**
* formToArray() gathers form element data into an array of objects that can
* be passed to any of the following ajax functions: $.get, $.post, or load.
* Each object in the array has both a 'name' and 'value' property. An example of
* an array for a simple login form might be:
*
* [ { name: 'username', value: 'jresig' }, { name: 'password', value: 'secret' } ]
*
* It is this array that is passed to pre-submit callback functions provided to the
* ajaxSubmit() and ajaxForm() methods.
*/
$.fn.formToArray = function(semantic) {
var a = [];
if (this.length == 0) return a;
var form = this[0];
var els = semantic ? form.getElementsByTagName('*') : form.elements;
if (!els) return a;
for(var i=0, max=els.length; i < max; i++) {
var el = els[i];
var n = el.name;
if (!n) continue;
if (semantic && form.clk && el.type == "image") {
// handle image inputs on the fly when semantic == true
if(!el.disabled && form.clk == el)
a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
continue;
}
var v = $.fieldValue(el, true);
if (v && v.constructor == Array) {
for(var j=0, jmax=v.length; j < jmax; j++)
a.push({name: n, value: v[j]});
}
else if (v !== null && typeof v != 'undefined')
a.push({name: n, value: v});
}
if (!semantic && form.clk) {
// input type=='image' are not found in elements array! handle them here
var inputs = form.getElementsByTagName("input");
for(var i=0, max=inputs.length; i < max; i++) {
var input = inputs[i];
var n = input.name;
if(n && !input.disabled && input.type == "image" && form.clk == input)
a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
}
}
return a;
};
/**
* Serializes form data into a 'submittable' string. This method will return a string
* in the format: name1=value1&name2=value2
*/
$.fn.formSerialize = function(semantic) {
//hand off to jQuery.param for proper encoding
return $.param(this.formToArray(semantic));
};
/**
* Serializes all field elements in the jQuery object into a query string.
* This method will return a string in the format: name1=value1&name2=value2
*/
$.fn.fieldSerialize = function(successful) {
var a = [];
this.each(function() {
var n = this.name;
if (!n) return;
var v = $.fieldValue(this, successful);
if (v && v.constructor == Array) {
for (var i=0,max=v.length; i < max; i++)
a.push({name: n, value: v[i]});
}
else if (v !== null && typeof v != 'undefined')
a.push({name: this.name, value: v});
});
//hand off to jQuery.param for proper encoding
return $.param(a);
};
/**
* Returns the value(s) of the element in the matched set. For example, consider the following form:
*
* <form><fieldset>
* <input name="A" type="text" />
* <input name="A" type="text" />
* <input name="B" type="checkbox" value="B1" />
* <input name="B" type="checkbox" value="B2"/>
* <input name="C" type="radio" value="C1" />
* <input name="C" type="radio" value="C2" />
* </fieldset></form>
*
* var v = $(':text').fieldValue();
* // if no values are entered into the text inputs
* v == ['','']
* // if values entered into the text inputs are 'foo' and 'bar'
* v == ['foo','bar']
*
* var v = $(':checkbox').fieldValue();
* // if neither checkbox is checked
* v === undefined
* // if both checkboxes are checked
* v == ['B1', 'B2']
*
* var v = $(':radio').fieldValue();
* // if neither radio is checked
* v === undefined
* // if first radio is checked
* v == ['C1']
*
* 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 this value is false the value(s)
* for each element is returned.
*
* Note: This method *always* returns an array. If no valid value can be determined the
* array will be empty, otherwise it will contain one or more values.
*/
$.fn.fieldValue = function(successful) {
for (var val=[], i=0, max=this.length; i < max; i++) {
var el = this[i];
var v = $.fieldValue(el, successful);
if (v === null || typeof v == 'undefined' || (v.constructor == Array && !v.length))
continue;
v.constructor == Array ? $.merge(val, v) : val.push(v);
}
return val;
};
/**
* Returns the value of the field element.
*/
$.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 == 'button' ||
(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 = $.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
*/
$.fn.clearForm = function() {
return this.each(function() {
$('input,select,textarea', this).clearFields();
});
};
/**
* Clears the selected form elements.
*/
$.fn.clearFields = $.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.
*/
$.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();
});
};
/**
* Enables or disables any matching elements.
*/
$.fn.enable = function(b) {
if (b == undefined) b = true;
return this.each(function() {
this.disabled = !b
});
};
/**
* Checks/unchecks any matching checkboxes or radio buttons and
* selects/deselects and matching option elements.
*/
$.fn.selected = function(select) {
if (select == undefined) select = true;
return this.each(function() {
var t = this.type;
if (t == 'checkbox' || t == 'radio')
this.checked = select;
else if (this.tagName.toLowerCase() == 'option') {
var $sel = $(this).parent('select');
if (select && $sel[0] && $sel[0].type == 'select-one') {
// deselect all other options
$sel.find('option').selected(false);
}
this.selected = select;
}
});
};
// helper fn for console logging
// set $.fn.ajaxSubmit.debug to true to enable debug logging
function log() {
if ($.fn.ajaxSubmit.debug && window.console && window.console.log)
window.console.log('[jquery.form] ' + Array.prototype.join.call(arguments,''));
};
})(jQuery);
