解决一个iview table组件报错问题You may have an infinite update loop in watcher with expression "columns"

问题如下

组件如下 

 

 data数据如下

这是因为iview 的table 组件不支持 双表头

我在网上搜了一遍，看见大佬改了ivew 的源码（666）

将view.js中

columns: {
    handler: function handler() {
        var colsWithId = this.makeColumnsId(this.columns);
        his.allColumns = (0, _util.getAllColumns)(colsWithId);
        this.cloneColumns = this.makeColumns(colsWithId);

        this.columnRows = this.makeColumnRows(false, colsWithId);
        this.leftFixedColumnRows = this.makeColumnRows('left', colsWithId);
        this.rightFixedColumnRows = this.makeColumnRows('right', colsWithId);
        this.rebuildData = this.makeDataWithSortAndFilter();
        this.handleResize();
        },
     deep: true
   },

修改为：

columns: {
     handler: function handler() {
         //[Fix Bug]You may have an infinite update loop in watcher with expression "columns"
         var tempClonedColumns = (0, _assist.deepCopy)(this.columns);
         var colsWithId = this.makeColumnsId(tempClonedColumns);
         //[Fix Bug End]
         this.allColumns = (0, _util.getAllColumns)(colsWithId);
         this.cloneColumns = this.makeColumns(colsWithId);

         this.columnRows = this.makeColumnRows(false, colsWithId);
         this.leftFixedColumnRows = this.makeColumnRows('left', colsWithId);
         this.rightFixedColumnRows = this.makeColumnRows('right', colsWithId);
         this.rebuildData = this.makeDataWithSortAndFilter();
         this.handleResize();
         },
      deep: true
     },

 这样错误解决了。

但是我们大佬不让改源码 

但是他又说我们可以改为单表头的（(*^_^*)）