<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
div{
text-align: center;
margin: 50px;
}
table{
border:1px solid ;
margin: auto;
width: 500px;
}
tr,td,th{
text-align: center;
border: 1px solid;
}
</style>
</head>
<body>
<div>
<input type="text" id="id" placeholder="请输入编号">
<input type="text" id="name" placeholder="请输入姓名">
<input type="text" id="gender" placeholder="请输入性别">
<input type="button" value="添加" id="btn_add">
</div>
<table>
<caption>学生信息表</caption>
<tr>
<th>编号</th>
<th>姓名</th>
<th>性别</th>
<th>操作</th>
</tr>
<tr>
<td>1</td>
<td>令狐冲</td>
<td>男</td>
<td><a href="javascript:void (0);" onclick="delTar(this);">删除</a></td>
</tr>
<tr>
<td>2</td>
<td>任我行</td>
<td>男</td>
<td><a href="javascript:void (0);" onclick="delTar(this);">删除</a></td>
</tr>
<tr>
<td>3</td>
<td>岳不群</td>
<td>?</td>
<td><a href="javascript:void (0);" onclick="delTar(this);">删除</a></td>
</tr>
</table>
<script>
//获取按钮
document.getElementById("btn_add").onclick = function () {
//获取文本内容
var id = document.getElementById("id").value;
var name = document.getElementById("name").value;
var gender = document.getElementById("gender").value;
//创建td，赋值td标签体
var td_id = document.createElement("td");
var text_id = document.createTextNode(id);
td_id.appendChild(text_id);
var td_name = document.createElement("td");
var text_name = document.createTextNode(name);
td_name.appendChild(text_name);
var td_gender = document.createElement("td");
var text_gender = document.createTextNode(gender);
td_gender.appendChild(text_gender);
var td_del = document.createElement("td");
var ele_a = document.createElement("a");
//设置属性值
ele_a.setAttribute("href","javascript:void(0);");
ele_a.setAttribute("onclick","delTar(this);");
var text_a = document.createTextNode("删除");
ele_a.appendChild(text_a);
td_del.appendChild(ele_a);
//创建tr
var tr = document.createElement("tr");
//添加td到tr中
tr.appendChild(td_id);
tr.appendChild(td_name);
tr.appendChild(td_gender);
tr.appendChild(td_del);
//获取table
var table = document.getElementsByTagName("table")[0];
table.appendChild(tr);
}
/*//2.删除：
1.确定点击的是哪一个超链接
<a href="javascript:void(0);" οnclick="delTr(this);" >删除</a>
2.怎么删除？
removeChild():通过父节点删除子节点*/
function delTar(obj) {
var table = obj.parentNode.parentNode.parentNode;
var tr = obj.parentNode.parentNode;
table.removeChild(tr);
}
</script>
</body>
</html>
