JQuery中serialize()用法实例分析

本文实例讲述了JQuery中serialize()用法。分享给大家供大家参考。具体分析如下：

一、serialize()定义和用法：

serialize()方法通过序列化表单值，创建标准的URL编码文本字符串，它的操作对象是代表表单元素集合的jQuery 对象。你可以选择一个或多个表单元素（比如input或文本框），或者 form 元素本身。序列化的值可在生成 AJAX 请求时用于 URL 查询字符串中。

语法：

$(selector).serialize()

详细说明

1、.serialize() 方法创建以标准 URL 编码表示的文本字符串。它的操作对象是代表表单元素集合的 jQuery 对象。

2、.serialize() 方法可以操作已选取个别表单元素的 jQuery 对象，比如 , 以及 <select>。不过，选择 </p> <p>//使用:$("#form1").serialize();</p> <p>上面则获取不到值。<br /> <br /> 二、JQuery中serialize()实例<br /> <br /> 1、ajax serialize()<br /> <U>复制代码</U> 代码如下:$.ajax({<br /> type: "POST",<br /> dataType: "json",<br /> url:ajaxCallBack,<br /> data:$('#myForm').serialize(),// 要提交表单的ID<br /> success: function(msg){<br /> alert(msg);<br /> }<br /> });</p> <p>2、serialize() 序列化表单实例<br /> <U>复制代码</U> 代码如下:<br /> <br /> </p> <p>点击按钮之后弹出：</p> <p>username=admin&password=admin123<br /> <br /> 三、serialize是用param方法对serializeArray的一个简单包装<br /> <br /> 1、$.param()</p> <p>$.param()方法是serialize()方法的核心，用来对一个数组或对象按照key/value进行序列化。<br /> <br /> param方法的js代码<br /> <U>复制代码</U> 代码如下:param: function( a ) {<br /> /// <summary><br /> /// This method is internal. Use serialize() instead.<br /> /// </summary><br /> /// <param name="a" type="Map">A map of key/value pairs to serialize into a string.</param>'<br /> /// <returns type="String" /><br /> /// <private /></p> <p>var s = [ ];</p> <p>function add( key, value ){<br /> s[ s.length ] = encodeURIComponent(key) + '=' + encodeURIComponent(value);<br /> };</p> <p>// If an array was passed in, assume that it is an array<br /> // of form elements<br /> if ( jQuery.isArray(a) || a.jquery )<br /> // Serialize the form elements<br /> jQuery.each( a, function(){<br /> add( this.name, this.value );<br /> });</p> <p>// Otherwise, assume that it's an object of key/value pairs<br /> else<br /> // Serialize the key/values<br /> for ( var j in a )<br /> // If the value is an array then the key names need to be repeated<br /> if ( jQuery.isArray(a[j]) )<br /> jQuery.each( a[j], function(){<br /> add( j, this );<br /> });<br /> else<br /> add( j, jQuery.isFunction(a[j]) ? a[j]() : a[j] );</p> <p>// Return the resulting serialization<br /> return s.join("&").replace(/%20/g, "+");<br /> }</p> <p>例如：<br /> <U>复制代码</U> 代码如下:var obj = {a:1,b:2,c:3};<br /> var k = $.param(obj);<br /> alert(k); //输出a=1&b=2&c=3<br /> <br /> 2、serializeArray<br /> <br /> serializeArray方法是将一个表单当中的各个字段序列化成一个数组<br /> serializeArray方法的jquery定义<br /> <U>复制代码</U> 代码如下:serializeArray: function() {<br /> /// <summary><br /> /// Serializes all forms and form elements but returns a JSON data structure.<br /> /// </summary><br /> /// <returns type="String">A JSON data structure representing the serialized items.</returns></p> <p>return this.map(function(){<br /> return this.elements ? jQuery.makeArray(this.elements) : this;<br /> })<br /> .filter(function(){<br /> return this.name && !this.disabled &&<br /> (this.checked || /select|textarea/i.test(this.nodeName) ||<br /> /text|hidden|password|search/i.test(this.type));<br /> })<br /> .map(function(i, elem){<br /> var val = jQuery(this).val();<br /> return val == null ? null 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