Javascript implements list switching _ javascript skills

This article mainly gives you detailed information on how to implement list switching in javascript. If you need more information, refer to IE compatibility. If you do not know it, I hope you can give me some advice.

Ideas:

1. js obtains the button group object for the specified click event, such as btns = document. xxx (), obtain the subscript of the current object before traversing the event binding process. For example: btns [I]. index = I;

2. Match index to the DOM object to be displayed

3. During the clicking process, you need to switch to the class. First, you need to determine whether the specified class exists and delete it. If no class exists, you can add the specified class. NOTE: if (! Null) True.

4. The same applies to onmouseover.

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