JS动态建表案例-2019年1月17日22点18分 - DOM结构

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>JS动态建表</title>
    <style>
        table,td,th{
            border: 2px solid lightcoral;
        }
        table{
            width: 500px;
            border-collapse: collapse;
            text-align: center;
        }
        table caption{
            font-size: 1.2rem;
            margin-bottom: 15px;
        }
        thead tr:nth-of-type(1){
            background-color: bisque;
        }
    </style>
</head>
<body>
    <table id="cart1">
        <caption>购物车1</caption>
        <thead>
            <tr>
                <th>编号</th>
                <th>品名</th>
                <th>数量</th>
                <th>单价</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>1</td>
                <td>手机</td>
                <td>1</td>
                <td>5000</td>
            </tr>
            <tr>
                <td>2</td>
                <td>电脑</td>
                <td>1</td>
                <td>7000</td>
            </tr>
            <tr>
                <td>3</td>
                <td>电视</td>
                <td>1</td>
                <td>9000</td>
            </tr>
        </tbody>
    </table>
    <hr><hr>
    <table id="cart2">
            <caption>购物车2</caption>
            <thead>
                <tr>
                    <th>编号</th>
                    <th>品名</th>
                    <th>数量</th>
                    <th>单价</th>
                </tr>
            </thead>
            <tbody>
            </tbody>
    </table>
    <script>
    var cart1=document.getElementById('cart1');
    // 对象数组
    var data=[
        {id: 1, name:'牛奶',count:3,price:50},
        {id: 2, name:'苹果',count:10,price:80},
        {id: 3, name:'衣服',count:2,price:600}
    ];
    var cart2=document.getElementById('cart2');
    var tbody=cart2.children[2];
    // 遍历
    data.forEach(function(value){
        var tr=document.createElement('tr');
        tr.innerHTML='<td>'+value.id+ '</td>';
        tr.innerHTML+='<td>'+value.name+ '</td>';
        tr.innerHTML+='<td>'+value.count+ '</td>';
        tr.innerHTML+='<td>'+value.price+ '</td>';
        tbody.appendChild(tr);
    })
    </script>
</body>
</html>

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