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

港控/mmm° 2022-12-21 14:56 155阅读 0赞

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

#  #

![808ff24770e88cdf41004448c2bf0dfc.png][]

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
           }
    });

Tips：【小程序云开发】中高级前端面试题库(1000+)（小程序中联系我哟）。  
\---------- 创作不易，感谢大家，请多多支持！

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjk4MTU2MA_size_16_color_FFFFFF_t_70][]

[808ff24770e88cdf41004448c2bf0dfc.png]: /images/20221120/f6d5957e639342bf9268aed6a62e3417.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjk4MTU2MA_size_16_color_FFFFFF_t_70]: /images/20221120/a46e6660091e4759966f9c441f7bf178.png

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

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