A streamlined JS DIV layer tab switching code_javascript skills

<title>DIV layer switching</title> <span onclick="JavaScript:ChangeDiv('0','JKDiv_',2)" style="cursor:hand;"> </span>Content 1<span onclick="JavaScript:ChangeDiv('1','JKDiv_',2)" style="cursor:hand;"> </span>Content 2<span onclick="JavaScript:ChangeDiv('2','JKDiv_',2)" style="cursor:hand;"> </span>Content 3<div id="JKDiv_0" style="font-size:14px;margin:20px;color:#FF0000;"> </div>The first area of ​​the content section<div id="JKDiv_1" style="display:none;font-size:14px;margin:10px;color:#FF0000;"> </div>Second area of ​​content section<div id="JKDiv_2" style="display:none;font-size:14px;margin:10px;color:#FF0000;"> </div>Content section third area
[Ctrl A select all Note: If you need to introduce external Js, you need to refresh to execute

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