<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style type="text/css">
#div1
{
width: 100px;
height: 100px;
background-color: red;
}
</style>
<script type="text/javascript">
function StartMove() {
//避免多定时器同时工作
clearInterval(timer);
var oDiv = document.getElementById("div1");
timer = setInterval(function () {
var speed = 10;
if (oDiv.offsetLeft >= 300) {
clearInterval(timer);
} else {
oDiv.style.left = oDiv.offsetLeft + speed + 'px';
}
}, 30);
}
</script>
</head>
<body>
<input type="button" id="btn" value="运动" onclick="StartMove()" />
<br />
<br />
<div id="div1"></div>
</body>
</html>
