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Correction status：qualified
Teacher's comments：
Collection
Collection
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>toList</title>
<style>
table,th,td{
border: 1px solid #666;
}
table {
width: 500px;
text-align: center;
border-collapse: collapse;
}
table caption {
font-size: 1.2rem;
margin-bottom: 15px;
}
/* 这里必须在nth-of-type(1)前添加父元素,否则thead,tbody中的第一行都会生效 */
thead tr:nth-of-type(1) {
background-color: #ccc;
}
</style>
</head>
<body>
<table id="list">
<caption>文具列表</caption>
<thead>
<th>序号</th>
<th>名称</th>
<th>单价</th>
<th>数量</th>
</thead>
<tbody>
</tbody>
</table>
<script>
var data = [//创建js数据数组
{id:1, product:'铅笔', price:20, number:30 },
{id:2, product:'橡皮', price:30, number:40 },
{id:3, product:'***', price:40, number:50 },
{id:4, product:'本子', price:50, number:60 }
];
var list = document.getElementById('list');//通过获取id获取元素list
var tbody = list.tBodies[0];//获取list表格的第一个tbody
for(i = 0;i < data.length; i++){//用for循环，定义变量i，与数组data长度作比较
var tr = document.createElement('tr');//创建tr元素
Object.keys(data[i]).forEach(function(key){//用forEach遍历数组data
tr.innerHTML += '<td>' + data[i][key] + '</td>';//将td元素及data中内容写入tr中
})
tbody.appendChild(tr); //在tbody中添加tr
}
</script>
</body>
</html>