abstract：<!DOCTYPE html><html><head> <meta charset="utf-8"> <title>控制Div</title> <style type="text/css"> #box{width: 100px;height: 100px;backgroun
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>控制Div</title>
<style type="text/css">
#box{width: 100px;height: 100px;background: red;margin: 20px 60px;}
</style>
</head>
<body>
<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>
<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：2019-01-29 17:51:00
Teacher's summary：function bb(){
box.style.width="400px"
}
function cc(){
box.style.background="pink"
}, 以后在语句后加上分号, 以防止代码压缩时出现解析错误