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addClass()

#!javascript
addClass(/* String */ className)

Description

Add a new class to the selected HTML element(s). If the selected element(s) already have classes, the new class will be appended. If the selected element(s) already has the class, it will not be appended.

Example

Initial Markup 

#!html
<body>
    <div id='ExDiv0' class='my-class'></div>
    <div id='ExDiv1' class='my-class'></div>
    <div id='ExDiv2' class='my-class'></div>
</body>
Executing: 
#!javascript
    lq('#ExDiv0').addClass('new-class');
    lq('.my-class').addClass('newer-class');
Produces: 
#!html
<body>
    <div id='ExDiv0' class='my-class new-class newer-class'></div>
    <div id='ExDiv1' class='my-class newer-class'></div>
    <div id='ExDiv2' class='my-class newer-class'></div>
</body>
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