Cannot read properties of undefined (reading 'length')

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参考技术A 首先我用的是element ui 的el-checkbox-group

使用的时候,报了一大推的错,

百度了一下,看见有的大佬说是因为层级太深的缘故

改成如下好了

Cannot read property 'replace' of undefined

技术图片

技术图片

 处理方法:1.把notebookTemplate的定义放在for循环的上面就可以解决

技术图片

 

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