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Vue錯誤——Property or method "toJSON" is not defined on the instance but referenced during render.

本文轉載自   查看原文   2021-07-11 21:20   1135    vue
有點小坑 注意點 根實例化上不可以console.log 開啟vconsole會報錯噠！！！
      1開啟vconsole 報toJSON is defiend定位問題在console.log() 將它注掉就不報錯了 
      2如需輸出這個東西 請找個隨便什么地方定義它toJSON(){} 雖然不報錯了但不知道有沒有什么問題
      3不開啟vconsole沒有這個bug
      4不需要的時候注釋掉
出現問題原因 官網的解釋為 由於 Vue 不允許動態添加根級響應式屬性，因此您必須通過預先聲明所有根級響應式數據屬性來初始化 Vue 實例，即使值為空：


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