本文實例講述了JS實現的簡單tab切換功能。分享給大家供大家參考，具體如下：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>www.49028c.com tab切換</title> <style> * { padding: 0; margin: 0 } body { font-size: 12px } ul, li, ol { list-style: none } a { text-decoration: none } .clearfix { clear: both; overflow: hidden } .tab_title ul li { float: left; padding: 0 10px } </style></head><body><div id="Tab1" class="tab clearfix"> <div class="tab_title clearfix"> <ul> <li><a target="_self" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" onmouseover="setTab('one',1,3)" id="one1">TAB1</a></li> <li><a target="_self" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" onmouseover="setTab('one',2,3)" id="one2">TAB2</a></li> <li><a target="_self" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" onmouseover="setTab('one',3,3)" id="one3">TAB3</a></li> </ul> </div> <div class="tab_details clearfix"> <div id="con_one_1" style="display: block;">con_one_1</div> <div style="display: none;" id="con_one_2">con_one_2</div> <div style="display: none;" id="con_one_3">con_one_3</div> </div></div><script type="text/javascript"> //tab切換效果 function setTab(name, cursel, n) { for(var i = 1; i <= n; i++) { var menu = document.getElementById(name + i); var con = document.getElementById("con_" + name + "_" + i); menu.className = i == cursel ? "cur" : ""; con.style.display = i == cursel ? "block" : "none"; } }</script></body></html>
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