[Vue warn]: Error in callback for watcher “fileList“: “TypeError: Cannot create property ‘uid‘ on st

 

[Vue warn]: Error in callback for watcher "fileList": "TypeError: Cannot create property 'uid' on string 

报错原因:
TypeError: Cannot create property ‘xxx’ on string ‘xxxx’,此类错误是赋值的类型错误
如以上示例错误,在使用ElementUI的upload组件时,把字符串列表赋值给了
fileList
,而
fileList
需求的是对象的列表

示例错误代码:

pictureList = ['url1', 'url2'];
this.fileList = pictureList;

示例正确代码:

pictureList = ['url1', 'url2'];
this.fileList = pictureList.map(item => {
       return {
         name: item,
         url: item
       }
});

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转载自blog.csdn.net/weixin_42981560/article/details/109727454
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