jQuery size()函数

size() 函数

函数用于返回当前jQuery对象封装的元素个数。

语法

jQueryObject.size( )

返回值

Number类型 返回该jQuery对象封装的DOM元素的个数。

实例说明

代码

 <!DOCTYPE html>
 <html lang="zh-CN">
 <head lang="en">
     <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>

 </head>
 <body>
 <div></div>
 <div></div>
 <div>
     <ul>
         <li>one</li>
         <li>two</li>
         <li>three</li>
     </ul>
 </div>
 <script>
     var O_li = $("div");
     document.writeln( O_li.size());
     var O_p = $("p");
     document.writeln( O_p.size() );
 </script>
 </body>
 </html>

运行结果

aaarticlea/png;base64,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" alt="" />

King_dream

2015-04-16 15:23:54