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

本文转载自  查看原文  2021-07-11 21:20  1135    vue
有点小坑 注意点 根实例化上不可以console.log 开启vconsole会报错哒！！！
      1开启vconsole 报toJSON is defiend定位问题在console.log() 将它注掉就不报错了 
      2如需输出这个东西 请找个随便什么地方定义它toJSON(){} 虽然不报错了但不知道有没有什么问题
      3不开启vconsole没有这个bug
      4不需要的时候注释掉
出现问题原因 官网的解释为 由于 Vue 不允许动态添加根级响应式属性，因此您必须通过预先声明所有根级响应式数据属性来初始化 Vue 实例，即使值为空：


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