<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<button onclick="add()" >添加</button>
<button onclick="del()" >删除</button>
<table >
<tr>
<td>性别</td>
<td>年龄</td>
</tr>
</table>
<script type="text/javascript">
function add() {
var table = document.getElementById("ss");
var newRow = table.insertRow(1)
var td1 = newRow.insertCell(0)
var td2 = newRow.insertCell(1)
td1.innerHTML="男"
td2.innerHTML="12"
}
function del() {
var table = document.getElementById("ss");
table.deleteRow(-1)
}
</script>
</body>
</html>