JS动态根据前面的列合并后面的列

需求合并行，在上一篇的基础上改进。

解决思路

1、获取前排列的rowspan值，存入数组，

2、再循环取出数组，根据rowspan的值合并

3、关键点用到jQuery的$("#xxx tbody td:nth-child(xx)")方法获取指定列，在循环遍历处理

代码：

/**
     * 依据前面的列内容合并后面的列内容
     * @param table_id tableID
     * @param table_colnum 待合并的列
     * @param table_colnum_decide 依据的列
     */
    function servermergetable_rowspan(table_id, table_colnum, table_colnum_decide) {
//    查找依据列是否有相同待合并的
        var table_firsttd_decide = "";
        var table_currenttd_decide = "";
        var table_SpanNum_decide = 0;
        var array = [];
        var table_Obj_decide = $(table_id + " tbody td:nth-child(" + table_colnum_decide + ")");
        table_Obj_decide.each(function (i) {
            if (i == 0) {
                table_firsttd_decide = $(this);
                table_SpanNum_decide = 1;
            } else {
                table_currenttd_decide = $(this);
                if (table_firsttd_decide.text() == table_currenttd_decide.text()) {
                    table_SpanNum_decide++;
                } else {
                    table_firsttd_decide = $(this);
                    table_SpanNum_decide = 1;
                }
            }
            //将依据列td的rowspan属性加入数组
            array.push(table_SpanNum_decide);
        });
        var table_firsttd = "";
        var table_currenttd = "";
        var table_SpanNum = 0;
        var table_Obj = $(table_id + " tbody td:nth-child(" + table_colnum + ")");
        table_Obj.each(function (i) {
            if (i == 0) {
                table_firsttd = $(this);
                table_SpanNum = array[i];
            } else {
                table_currenttd = $(this);
                table_SpanNum = array[i];
                if (table_SpanNum == 1) {//rowspan值为1的不合并
                    table_firsttd = $(this);
                } else {//否则合并
                    table_firsttd.attr("rowSpan", table_SpanNum);
                    table_currenttd.remove();
                }
            }

        });
    }