abstract：<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> #box{ width: 100px; height: 100px;
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#box{
width: 100px;
height: 100px;
background: red;
margin:20px 80px;
}
</style>
</head>
<body>
<script type="text/javascript">
var box
window.onload=function () {
box=document.getElementById('box')
}
function aa() {
box.style.height="400px"//改变高度
}
function bb() {
box.style.width="400px"//改变宽度
}
function cc() {
box.style.background="pink"//改变颜色
}
function dd() {
box.style.height="100px"
box.style.width="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：查无此人Correction time：2019-05-08 09:04:35
Teacher's summary：完成的不错。每行js语句结束增加;号。继续加油