Jquery: hasClass addClass removeClass toggleClass 用法

<1>hasClass 应用

Examples:

HTML

<div ></div>

JavaScript

$('myElement').hasClass('testClass'); // returns true

<2>addClass 应用

Examples:

HTML

<div ></div>

JavaScript

$('myElement').addClass('newClass');

<3>removeClass 应用

Examples:

HTML

<div ></div>

<4>toggleClass 应用

Adds or removes the passed in class name to the Element, depending on whether or not it's already present.

Examples:

HTML

<div ></div>

JavaScript

$('myElement').toggleClass('myClass');

Resulting HTML

<div ></div>

转自：http://www.blogjava.net/fengzhanke/archive/2011/01/11/342798.html