Table隔行变色的JavaScript代码_javascript技巧

效果演示代码:

<table id="datatable"> <tr> <td>脚本之家</td> </tr> <tr> <td>www.jb51.net</td> </tr> <tr> <td>脚本之家</td> </tr> <tr> <td>www.jb51.net</td> </tr> <tr> <td>脚本之家</td> </tr> <tr> <td>www.jb51.net</td> </tr> <tr> <td>脚本之家</td> </tr> <tr> <td>www.jb51.net</td> </tr> </table>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

核心代码:

function showtable(){
var color1 = "rgb(234,240,255)";
var color2 = "rgb(255,255,255)";
var bgColor = "rgb(255,255,193)";
var trs = document.getElementById("datatable").getElementsByTagName("tr");
for (var i=0;iif (i%2==0) {
trs[i].style.backgroundColor=color1;
trs[i].onmouseover = function(){
this.style.backgroundColor = bgColor;
}
trs[i].onmouseout = function(){
this.style.backgroundColor = color1;
}
} else {
trs[i].style.backgroundColor=color2;
trs[i].onmouseover = function(){
this.style.backgroundColor = bgColor;
}
trs[i].onmouseout = function(){
this.style.backgroundColor = color2;
}
}
}
}