摘要：<!DOCTYPE html> <html> <head> <title>使用js控制div样式</title> <style type="text/css"> #box{ &
<!DOCTYPE html>
<html>
<head>
<title>使用js控制div样式</title>
<style type="text/css">
#box{
width: 100px;
height: 100px;
background: blue;
margin: 20px 80px;
}
</style>
</head>
<body>
<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="200px";
}
function bb() {
box.style.width="200px";
}
function cc() {
box.style.background="red";
}
function dd() {
box.style.background="blue";
box.style.width="100px";
box.style.height="100px";
}
function ee() {
box.style.display="none";
}
function ff() {
box.style.display="block";
}
</script>
</body>
</html>
批改老师：灭绝师太批改时间：2019-02-15 17:36:52
老师总结：id是唯一的,class获取的是元素的集合,本质的区别
