代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
table {
width: 500px;
margin: 100px auto;
border-collapse: collapse;
text-align: center;
}
td,
th {
border: 1px solid #333;
}
thead tr {
height: 40px;
background-color: #ccc;
}
</style>
</head>
<body>
<table cellspacing="0">
<thead>
<tr>
<th>姓名</th>
<th>科目</th>
<th>成绩</th>
<th>操作</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</body>
</html>
<script>
// 数据
var datas = [{
name: "xiaoming",
subject: "java",
score: 100
}, {
name: "qq",
subject: "java",
score: 89
}, {
name: "12",
subject: "java",
score: 98
}, {
name: "we",
subject: "java",
score: 86
}];
// 往tbody里面创建行
var tbody = document.querySelector('tbody')
for (var i = 0; i < datas.length; i++) {//hang
// 创建行
var tr = document.createElement('tr')
tbody.appendChild(tr)
//创建td
for (var k in datas[i]) {//lie 循环对象
var td = document.createElement('td')
// 对象里的属性值给td
td.innerHTML = datas[i][k]
tr.appendChild(td);
}
// 创建 删除 单元格
var td = document.createElement('td')
td.innerHTML = '<a href="javascript:;">删除</a>'
tr.appendChild(td)
}
// 删除操作
var as = document.querySelectorAll('a');
for (var i = 0; i < as.length; i++) {
as[i].onclick = function () {
// 点击a删除 当前行
tbody.removeChild(this.parentNode.parentNode)
}
}
</script>
