回滚 table 查找多级表头最后一列的判断

src/modules/table.js

@@ -814,20 +814,13 @@ layui.define(['lay', 'laytpl', 'laypage', 'form', 'util'], function(exports){
 
     if(that.autoColNums > 0 && patchNums >= -colNums && patchNums <= colNums){
       var getEndTh = function(th){
-        var field, thRet;
-        th = th || that.layHeader.eq(0).find('thead th:last-child')
-        layui.each(th, function (thIndex, thElem) {
-          thElem = $(thElem);
-          if (!thElem.children('.'+ELEM_GROUP).length) { // 排除合并表头
-            field = thElem.attr('data-field');
-            thRet = thElem;
-          }
-        })
-
+        var field;
+        th = th || that.layHeader.eq(0).find('thead > tr:first-child > th:last-child')
+        field = th.data('field');
         if(!field && th.prev()[0]){
           return getEndTh(th.prev())
         }
-        return thRet
+        return th;
       };
       var th = getEndTh();
       var key = th.data('key');