abstract：<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0">&
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Table</title>
<style type="text/css">
table {
width: 600px;
border: 1px solid black;
border-collapse: collapse;
background-color: lightcyan;
}
tr td {
height: 36px;
border: 1px solid black;
text-align: center;
}
</style>
</head>
<body>
<table>
<tr>
<th colspan="6" style="height: 36px;"//合并6列>学习课程表 </th>
</tr>
<tr>
<td>日期</td>
<td colspan="2">上午</td>
<td colspan="2">下午</td>
<td>备注</td>
</tr>
<tr>
<td>星期一</td>
<td>PHP课程</td>
<td>HTML课程</td>
<td>JS课程</td>
<td>PHP课程</td>
<td></td>
</tr>
<tr>
<td>星期二</td>
<td>PHP课程</td>
<td>JAVA课程</td>
<td>CSS课程</td>
<td>HTML课程</td>
<td></td>
</tr>
<tr>
<td>星期三</td>
<td>PHP课程</td>
<td>CSS课程</td>
<td>HTML课程</td>
<td>PHP课程</td>
<td></td>
</tr>
<tr>
<td>星期四</td>
<td>PHP课程</td>
<td>JS课程</td>
<td>HTML课程</td>
<td>JAVA课程</td>
<td></td>
</tr>
<tr>
<td>星期五</td>
<td>C++课程</td>
<td>HTML课程</td>
<td>JS课程</td>
<td>PHP课程</td>
<td></td>
</tr>
<tr>
<td>星期六</td>
<td>JAVAEE课程</td>
<td>HTML课程</td>
<td>JS课程</td>
<td>PHP课程</td>
<td></td>
</tr>
<tr>
<td>星期日</td>
<td>PHP课程</td>
<td>HTML课程</td>
<td>JS课程</td>
<td>PHP课程</td>
<td></td>
</tr>
</table>
</body>
</html>
Correcting teacher：天蓬老师Correction time：2019-06-24 10:15:36
Teacher's summary：建议以后将表格主体放在<tbody>标签中, 就算你不加, 浏览器也会自动添加的, 否则你在用js来获取表格元素的时候,会出问题
