abstract：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>changeDIV</title><style>#box{width: 100px;height: 100px;background: red;}</style></
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>changeDIV</title>
<style>
#box{
width: 100px;
height: 100px;
background: red;
}
</style>
</head>
<body>
<!-- 用按钮控制div高度、宽度、颜色、重置、隐藏、显示 -->
<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="重置" onclick="dd()">
<input type="button" value="隐藏" onclick="ee()">
<input type="button" value="显示" onclick="ff()">
<script type="text/javascript">
var box ;
window.onload = function(){
box = document.getElementById('box');
}
function aa(){
box.style.height ="400px";
}
function bb(){
box.style.width ="400px";
}
function cc(){
box.style.background ="pink";
}
function dd(){
box.style.width ="100px";
box.style.height ="100px";
box.style.background ="red";
}
function ee(){
box.style.display ="none";
}
function ff(){
box.style.display="block";
}
</script>
</body>
</html>
Correcting teacher：灭绝师太Correction time：2019-03-20 09:29:56
Teacher's summary：学习的速度有点快 , 要确保知识被吸收哦!