我的学习作业
背后捅人刀2019-03-12 22:04:42248<!DOCTYPE html>
<html dir="ltr">
<head>
<meta charset="utf-8">
<title>控制DIV</title>
<style media="screen">
div{width:50px;height:50px;background:red;}
</style>
</head>
<body>
<div id="div"></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="重置" onclick="dd()">
<input type="button" value="隐藏" onclick="ee()">
<input type="button" value="显示" onclick="ff()">
</body>
<script type="text/javascript">
var box;
window.onload=function(){
box=document.getElementById('div');
}
function aa(){
box.style.height="400px";
}
function bb(){
box.style.width="400px";
}
function cc(){
box.style.background="pink";
}
function dd(){
box.style.width="50px";
box.style.height="50px";
box.style.background="red";
}
function ee(){
box.style.display="none";
}
function ff(){
box.style.display="block";
}
</script>
</html>