我定义了两个数组一个是comment和commentList,在运用.concat()给commentList拼接的时候为什么是变成了string类型?而同样是拼接为什么comment又是数组类型呢?我打算做一个评论数组(comment)在里面嵌套一个评论详细信息数组(commentList),结果不信
.concat()连接后为什么把数组变成了string类型?Why does .concat() turn the array into a string type after concatenation?
.concat()连接后为什么把数组变成了string类型?我定义了两个数组一个是comment和commentList,在运用.concat()给commentList拼接的时候为什么是变成了string类型?而同样是拼接为什么comment又是数组类型呢?我打算做一个评论数组(comment)在里面嵌套一个评论详细信息数组(commentList),结果不信
I have defined two arrays, one is comment and the other is comment list Why does concat () become a string when splicing the commentlist? And the same is splicing. Why is comment an array type? I'm going to make a comment array and nest a comment list in it. I don't believe it
回答:
希望各位大佬可以帮忙解解惑
nickName和avatarUrl都是字符串吧 那拼接出来就是字符串