摘要：<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript"&
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript">
var box
window.onload=function() {
box=document.getElementById("box");
}
function aa(){
box.style.width="400px";
}
function bb(){
box.style.height="200px";
}
function cc(){
box.style.background="red";
}
function dd(){
box.style.display="none";
}
function ee(){
box.style.display="block";
}
function ff(){
box.style.width="100px";
box.style.height="100px";
box.style.background="blue";
}
</script>
</head>
<body>
<div id="box" style="width:100px;height:100px;background:blue;"></div>
<input type="button" value="变宽" onclick="aa()">
<input type="button" value="变高" 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="重置" onclick="ff()">
</body>
</html>
