abstract：<!DOCTYPE html><html><head> <title>ccccccc</title> <meta charset="utf-8"> <style type="text/css"> #box{height: 100px;width: 100px;backgrou
<!DOCTYPE html>
<html>
<head>
<title>ccccccc</title>
<meta charset="utf-8">
<style type="text/css">
#box{height: 100px;width: 100px;background: red;}//声明div中idBOX的样式
</style>
<body>
<div id="box"></div>
<input type="button" value="变高" onclick="gao()">//通过onclick事件触发并引用函数实现效果
<input type="button" value="变宽" onclick="kuan()">
<input type="button" value="变色" onclick="se()">
<input type="button" value="隐藏"onclick="yin()">
<input type="button" value="显示"onclick="xian()">
<input type="button" value="重置"onclick="chongz()">
<script type="text/javascript">
var box //声明box引用以下全局变量
window.onload=function(){
box=document.getElementById("box")
}
function gao(){
box.style.height="300px"
}
function kuan(){
box.style.width="250px"
}
function se(){
box.style.background="pink"
}
function chongz(){
box.style.height="100px"
box.style.width="100px"
box.style.background="red"
}
function yin(){
box.style.display="none"
}
function xian(){
box.style.display="block"
}
</script>
</body>
</html>
Correcting teacher：灭绝师太Correction time：2019-01-12 09:17:30
Teacher's summary：完成的不错！作业是为了巩固知识点，确保知识点都有好好掌握哦！