[GitHub] [echarts] jonavila commented on issue #14293: 配置项series.data数组里如果同时存在null和对象,将会报错Cannot read property 'selected' of null

[GitBox <gi...@apache.org>]

jonavila commented on issue #14293:
URL: https://github.com/apache/echarts/issues/14293#issuecomment-790918020


   I ran into this issue in 5.x and I believe it's caused by this method of Series.ts
   
   
   ```
   private _initSelectedMapFromData(data: List) {
           // Ignore select info in data if selectedMap exists.
           // NOTE It's only for legacy usage. edge data is not supported.
           if (this.option.selectedMap) {
               return;
           }
   
           const dataIndices: number[] = [];
           if (data.hasItemOption) {
               data.each(function (idx) {
                   const rawItem = data.getRawDataItem(idx);
                   if (typeof rawItem === 'object'
                       && (rawItem as OptionDataItemObject<unknown>).selected
                   ) {
                       dataIndices.push(idx);
                   }
               });
           }
   
           if (dataIndices.length > 0) {
               this._innerSelect(data, dataIndices);
           }
       }
       
   ```
   You can see how it fails if rawItem is null because typeof null === 'object'.
   
   Using  undefined in the value instead of null works for me as workaround.
   
   
   


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