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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>动态设置层的大小</title>
<style type="text/css">
.divMain
{
width:10px;
height:100px;
border-style:solid;
border-width:1px;
border-color:Green;
display:none;
}
</style>
<script type="text/javascript">
var setIntervalID;
function ZoomDiv() {
var divMain = document.getElementById("divMain");
divMain.style.width = "200px";
divMain.style.height = "200px";
}
function ShowDiv() {
setIntervalID = setInterval("inc()", 100);
}
function inc() {
var divMain = document.getElementById("divMain2");
//div不能设置class,否则使用divMain.style.width取到的值时空的
//只能在元素里设置style="width:10px;height:100px"
var oldWidth = divMain.style.width;
var oldHeight = divMain.style.height;
oldWidth = parseInt(oldWidth);
oldHeight = parseInt(oldHeight);
oldWidth += 1;
oldHeight += 1;
if (oldWidth >= 200) {
//清除定时器
clearInterval(setIntervalID);
return;
}
divMain.style.width = oldWidth + "px";
divMain.style.height = oldHeight + "px";
}
</script>
</head>
<body>
<input type="button" value="放大层" onclick="ZoomDiv()" />
<input type="button" value="动态放大层" onclick="ShowDiv()" />
<div id="divMain" class="divMain">
案例:跟着鼠标飞的图片。提示:鼠标移动的事件时onmousemove,通过
window.event的clientX,clientY属性获得鼠标的位置
</div>
<!--这里不能设置class,否则使用divMain.style.width取到的值时空的-->
<div id="divMain2" style="width:10px;height:100px;background-color:Red;">
案例:跟着鼠标飞的图片。提示:鼠标移动的事件时onmousemove,通过
window.event的clientX,clientY属性获得鼠标的位置
</div>
</body>
</html>
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