一、代码：
<html>
<head>
<meta charset="utf-8" />
<title>table test</title>
<!--
作者：wyp55023@163.com
时间：2018-11-02
描述：增加、删除行
-->
<script src="js/jquery-1.8.3.js"></script>
<script type="text/javascript">
//增加行
function addRow(){
var myTab = document.getElementById("myTable");
var tr = myTab.insertRow();
var td1 = tr.insertCell();
var td2 = tr.insertCell();
var td3 = tr.insertCell();
var td4 = tr.insertCell();
td1.innerHTML = "张甜";
td2.innerHTML = "18";
td3.innerHTML = "610234838wer8r49234";
td4.innerHTML = "<input type='button' value='-' onclick='deleteRow(this)'/>";
}
//删除行
function deleteRow(btn){
var tr= btn.parentNode.parentNode;
var myTab = document.getElementById("myTable");
myTab.deleteRow(tr.rowIndex);
}
</script>
</head>
<body>
<input type="button" value="+" id="addMsg" onclick="addRow()"/>
<table border="1" id="myTable">
<tr>
<th>name</th>
<th>age</th>
<th>postCode</th>
<th>操作</th>
</tr>
<tr>
<td>李毅1</td>
<td>28</td>
<td>610323234419239211232231213223873</td>
<td><input type="button" value="-" onclick='deleteRow(this)'/></td>
</tr>
<tr>
<td>李毅2</td>
<td>28</td>
<td>610323234419239211232231213223873</td>
<td><input type="button" value="-" onclick='deleteRow(this)'/></td>
</tr>
</table>
</body>
</html>
二、效果
