<tr><th>商品图片地址</th><th>商品id</th><th>名称</th><th>单价</th><th>购买数量</th></tr>

var data = [
    {
        tr: [
            { th: "商品图片地址" },
            { th: "商品id" },
            { th: "名称" },
            { th: "单价" },
            { th: "购买数量" }
        ]
    }
];