abstract：<!DOCTYPE html><html><head> <meta charset="utf-8"> <title>改變div案例</title> <style type="text/css"> #box{ width: 100px;
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>改變div案例</title>
<style type="text/css">
#box{
width: 100px;
height: 100px;
background: red;
margin: 20px 80px;
}
</style>
</head>
<body>
<!-- 用按鈕控制div高度、寬度、顏色、重置、隱藏、顯示 -->
<div id="box" ></div>
<input type="button" value="變高" onclick="aa()">
<input type="button" value="寬度" onclick="bb()">
<input type="button" value="顏色" onclick="cc()">
<input type="button" value="重置" onclick="dd()">
<input type="button" value="隱藏" onclick="ee()">
<input type="button" value="顯示" onclick="ff()">
<script type="text/javascript">
var box
window.onload=function(){
box=document.getElementById('box')
}
function aa(){
box.style.height="300px";
}
function bb(){
box.style.width="300px";
}
function cc(){
box.style.background="blue";
}
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>
</body>
</html>
總結(jié)：寫完樣式，一定記得調(diào)用，不調(diào)用是沒有效果的。
Correcting teacher：天蓬老師Correction time：2019-04-09 11:26:55
Teacher's summary：你的代碼, 寫到了代碼塊外部了, 還有, 對于只有一行代碼的函數(shù), 有必要創(chuàng)建嗎/