控制div样式
<!DOCTYPE html>
<html>
<head>
<title>控制div样式</title>
<meta charset="utf-8">
<style type="text/css">
#box{width: 100px;height: 100px;background: #ccc; }
</style>
</head>
<body>
<script type="text/javascript">
var qz
window.onload=function(){
qz=document.getElementById('box')
}
function aa(){
qz.style.height="200px"
}
function bb(){
qz.style.width="200px"
}
function cc(){
qz.style.background="pink"
}
function dd(){
qz.style.display ="none"
}
function ee(){
qz.style.display="block"
}
function ff(){
qz.style.height="100px"
qz.style.width="100px"
qz.style.background="#ccc"
}
</script>
<div id="box"></div>
<input type="button" value="变高" onclick="aa()">
<input type="button" value="变宽" onclick="bb()">
<input type="button" value="变色" onclick="cc()">
<input type="button" value="隐藏" onclick="dd()">
<input type="button" value="显示" onclick="ee()">
<input type="button" value="还原" onclick="ff()">
</body>
</html>