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<!DOCTYPE html>
<html lang="zh">
<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>Document</title>
</head>
<body>
<table border="1" width="800" align="center" id="mytab"></table>
</body>
<script type="text/javascript">
//找表格对象
var mytab = document.getElementById('mytab');
//添加行
//创建也有添加作用
var row = mytab.insertRow();
//添加单元格
var td1 = row.insertCell();
td1.innerHTML = '这个是单元格1';
var td2 = row.insertCell();
td2.innerHTML = '这个是单元格2';
var td3 = row.insertCell();
td3.innerHTML = '这个是单元格3';
</script>
</html>点击 "运行实例" 按钮查看在线实例
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