abstract：<html> <meta charset="utf-8"> <head> <style type="text/css"> ul{ list
<html>
<meta charset="utf-8">
<head>
<style type="text/css">
ul{ list-style: none; padding: 15px; overflow: hidden}
.div1{width: 450px;height: 650px; background: #ccc; box-shadow: 2px 2px 2px #808080;margin: 30px auto;}
.div2{ width: 400px; height: 500px; background: #efefef; border: 4px double green;
margin: 5px auto;}
h1{ text-align: center}
table{ width: 90%; height: 80px; margin: auto}
button:hover{ cursor: pointer}
</style>
</head>
<body>
<div class="div1">
<h1>在线客服</h1>
<div class="div2">
<ul>
<li></li>
</ul>
</div>
<table>
<tr>
<td align="right"><textarea name="text" cols="50" rows="4"></textarea> </td>
<td align="left"> <button type="button">发送</button></td>
</tr>
</table>
</div>
<script >
//获取页面元素
let btn = document.getElementsByTagName("button")[0];
console.log(btn);
let text = document.getElementsByName("text")[0];
console.log(text);
let list = document.getElementsByTagName("ul")[0];
console.log(list);
let sum = 0;
</script>
</body>
</html>
Correcting teacher：查无此人Correction time：2019-04-23 13:51:23
Teacher's summary：完成的不错，今天你完成了不少作业。继续加油。