代码：
1 JS：
2 table.render({
3 cols: [[ //标题栏
4 {field: 'username', title: '联系人', width: 80, rowspan: 2} //rowspan即纵向跨越的单元格数
5 ,{field: 'amount', title: '金额', width: 80, rowspan: 2}
6 ,{align: 'center', title: '地址', colspan: 3} //colspan即横跨的单元格数，这种情况下不用设置field和width
7 ], [
8 {field: 'province', title: '省', width: 80}
9 ,{field: 'city', title: '市', width: 120}
10 ,{field: 'county', title: '详细', width: 300}
11 ]]
12 });
13
14 它等价于：
15 <table class="layui-table" lay-data="{基础参数}">
16 <thead>
17 <tr>
18 <th lay-data="{field:'username', width:80}" rowspan="2">联系人</th>
19 <th lay-data="{field:'amount', width:120}" rowspan="2">金额</th>
20 <th lay-data="{align:'center'}" colspan="3">地址</th>
21 </tr>
22 <tr>
23 <th lay-data="{field:'province', width:80}">省</th>
24 <th lay-data="{field:'city', width:120}">市</th>
25 <th lay-data="{field:'county', width:300}">详细</th>
26 </tr>
27 </thead>
28 </table>
29
