请老师检查代码

来源：1-25 编程练习

慕仙0287733

2020-03-15 21:00:07

<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>闪烁的文字</title>
<style type="text/css">
div{
width:200px;
height:200px;
line-height:200px;
border:2px solid gray;
text-align:center;
color:red;
}
</style>
</head>
<body>
<h3>会闪烁的文字</h3>
<div id="text">
☆☆☆今日特卖☆☆☆
</div>
<script type="text/javascript">
//补充代码
var a=document.getElementsByTagName('div')[0];
function m() {
a.innerHTML='★★★今日特卖★★★'
}
function n() {
a.innerHTML='☆☆☆今日特卖☆☆☆'
}
setTimeout(m,500);
setTimeout(n,1000);
setInterval(function () {
setTimeout(m,500);
setTimeout(n,1000);
},1000)
</script>
</body>
</html>