abstract：<!DOCTYPE html><html><head> <title> JavaScript控制DIV样式</title> <style type="text/css" > #box{width:300px;height:300px;background: red;margin:30px 30px; }
<!DOCTYPE html>
<html>
<head>
<title> JavaScript控制DIV样式</title>
<style type="text/css" >
#box{width:300px;height:300px;background: red;margin:30px 30px; }
</style>
</head>
<body >
<script type="text/javascript">
var box
window.onload=function () {
box=document.getElementById('box')
}
function aa(){
box.style.height="600px"
}
function bb(){
box.style.width="600px"
}
function cc(){
box.style.background="pink"
}
function dd(){
box.style.width="300px"
box.style.height="300px"
box.style.background="red"
}
function ee(){
box.style.display="none"
}
function ff(){
box.style.display="block"
}
</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="重置" onclick="dd()">
<input type="button" value="隐藏" onclick="ee()">
<input type="button" value="显示" onclick="ff()">
</body>
</html>
Correcting teacher：天蓬老师Correction time：2018-12-06 15:18:41
Teacher's summary：dom中的style属性,实际上是一个对象,所以要用对象的方式访问