jQuery.hasClass() 函数

时间：2022-03-18 09:24:00

hasClass() 函数

判断当前选择元素是否有指定的类名

语法

$(selector).hasclass(classname)

返回值

返回值为布尔型（true/false)

如果当前选择对象包含多个元素，只要其中任意一个元素包含该类名，则返回true

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 id="div"></div>

 <div>

     <ul>

         <li>one</li>

         <li id="two" class="li">two</li>

         <li>three</li>

     </ul>

 </div>

 <script>

     document.writeln( $("#two").hasClass("li") );//返回true

     document.writeln( $("ul").hasClass("li") );//返回false

     document.writeln( $("#div").hasClass("li"));//返回false 因为id=div对象中没有该类名

 </script>

 </body>

 </html>

运行结果

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

King_dream

2015-04-16 17:10:52

相关文章