Jquery方法
<head>
<script src="jquery-1.4.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
// 不需要on——
$(".table1 tr").mouseenter(function () {
$(this).css("backgroundColor", "yellow");
}).mouseleave(function () {
$(this).css("backgroundColor", "white");
});
})
</script>
</head>
<body>
<table class="table1">
<tr>
<td>
喜洋洋
</td>
</tr>
<tr>
<td>
喜洋洋
</td>
</tr>
<tr>
<td>
喜洋洋
</td>
</tr>
<tr>
<td>
喜洋洋
</td>
</tr>
<tr>
<td>
喜洋洋
</td>
</tr>
</table>
</body>
Js方法
<head>
<script type="text/javascript">
function ChangeColor() {
var table = document.getElementById("table1");
var trs = table.getElementsByTagName("tr");
for (var i = 0; i < trs.length; i++) {
// 事件前面有on——
trs[i].onmouseenter = function () {
this.style.backgroundColor = "yellow";
}
trs[i].onmouseleave = function () {
this.style.backgroundColor = "white";
}
}
}
</script>
</head>
