首先是vue代码
<template><div id="body-container"style="position: absolute"><div class="box-container"><div class="lsb-table-box" ><div class="table-container" id="lsb-table"></div></div></div></div></template>
然后是js方法
/*** 渲染表格*/
function tableRenderCs() {const data=[{"one": "测试1","two": "测试2","three": "测试3","four": "测试4","five": "测试5","six": "测试6","seven": "测试7","eight": "测试8","nine": "测试9"},{"one": "测试1","two": "测试2","three": "测试3","four": "测试4","five": "测试5","six": "测试6","seven": "测试7","eight": "测试8","nine": "测试9"},{"one": "测试1","two": "测试2","three": "测试3","four": "测试4","five": "测试5","six": "测试6","seven": "测试7","eight": "测试8","nine": "测试9"}]let html = '<table class="table-wj JZ-A" border="1" cellspacing="0">' +'<thead>' +'<tr>' +'<th rowspan="2" colspan="3">第一列</th>' +'<th rowspan="2" colspan="1" style="width: 50px;">第二列</th>' +'<th rowspan="2" colspan="1" style="width: 100px;">第三列</th>' +'<th rowspan="2" colspan="1" style="width: 50px;">第四列</th>' +'<th rowspan="2" colspan="1" style="width: 80px;">第五列</th>' +'<th rowspan="1" colspan="3">第六列</th>' +'</tr>' +'<tr>' +'<th colspan="1" style="width: 50px;">第六列的第一列</th>' +'<th colspan="1" style="width: 90px;">第六列的第二列</th>' +'</tr>' +'</thead>' +'<tbody>';for (let i = 0; i < data.length; i++) {const item = data[i];html +=`<tr>` +`<td>${item.one}</td>` +`<td>${item.two}</td>` +`<td>${item.three}</td>` +`<td>${item.four}</td>` +`<td>${item.five}</td>` +`<td>${item.six}</td>` +`<td>${item.seven}</td>` +`<td>${item.eight}</td>` +`<td>${item.nine}</td>` +`</tr>`;}html += '</tbody></table>';let _$ = $(".lsb-table-box .table-container");_$.append(html);mergeColumns();//调用合并表格方法
}/*** 执行合并逻辑*/
function mergeColumns() {let $table = $('table.table-wj');let $rows = $table.find('tbody tr');const numCols = $rows.eq(0).find('td').length;//考虑全部列//const numCols = Math.min(3, $rows.eq(0).find('td').length); // 仅考虑前三列// 遍历每列for (let col = 1; col <= numCols; col++) {let $currentColumn = $table.find(`td:nth-child(${col})`);let prevContent = null;let rowspan = 1;for (let i = 0; i < $currentColumn.length; i++) {let $currentCell = $($currentColumn[i]);let currentContent = $currentCell.text();if (currentContent === prevContent) {rowspan++;$currentCell.addClass('hidden');} else {if (rowspan > 1) {$currentColumn.eq(i - rowspan).attr('rowspan', rowspan);}prevContent = currentContent;rowspan = 1;}}if (rowspan > 1) {$currentColumn.eq($currentColumn.length - rowspan).attr('rowspan', rowspan);}}// 清除被隐藏的单元格$table.find('.hidden').remove();
}const numCols这里给出了两种合并表格的逻辑，第一个是只会对前三列执行合并逻辑，而第二个会对所有列执行合并逻辑。下面是两种逻辑的合并效果图。
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