从所有匹配的元素中删除全部或者指定的类。

返回值:jQuery

参数:

• class (String): (可选) 要删除的类名

示例:

$("p").removeClass()

HTML 代码:

<p class="selected">Hello</p>

结果:

[ <p>Hello</p> ]

示例:

$("p").removeClass("selected")

HTML 代码:

<p class="selected first">Hello</p>

结果:

[ <p class="first">Hello</p> ]

Removes all or the specified class(es) from the set of matched elements.

Return value: jQuery
Parameters:

• class (String): (optional) One or more CSS classes to remove from the elements

Example:

 $("p").removeClass()  

Before:

 <p class="selected">Hello</p>  

 [ <p>Hello</p> ]  

Example:

 $("p").removeClass("selected")  

 <p class="selected first">Hello</p>  

 [ <p class="first">Hello</p> ]  

Example:

 $("p").removeClass("selected highlight")  

Before:

 <p class="highlight selected first">Hello</p>  

 [ <p class="first">Hello</p> ]