<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <title>Examples</title> <meta name="description" content=""> <meta name="keywords" content=""> <link href="" rel="stylesheet"> <script> window.onload=function(){ var oTab=document.getElementById("tab1"); var oldColor=""; // alert(oTab.tBodies[0].rows[1].cells[1].innerHTML); for(var i=0;i<oTab.tBodies[0].rows.length;i++){ oTab.tBodies[0].rows[i].onmouseover=function(){ oldColor=this.style.background; this.style.background="green"; } oTab.tBodies[0].rows[i].onmouseout=function(){ this.style.background=oldColor; } if(i%2){ oTab.tBodies[0].rows[i].style.background="#ccc"; }else{ oTab.tBodies[0].rows[i].style.background=""; } } } </script> </head> <body> <table id="tab1" border='1' width="500px"> <thead> <td>ID</td> <td>姓名</td> <td>年龄</td> </thead> <tbody> <tr> <td>1</td> <td>张三</td> <td>12</td> </tr> <tr> <td>1</td> <td>李四</td> <td>34</td> </tr> <tr> <td>1</td> <td>王五</td> <td>40</td> </tr> <tr> <td>1</td> <td>李四</td> <td>34</td> </tr> <tr> <td>1</td> <td>王五</td> <td>40</td> </tr> </tbody> </table> </body> </html>