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怎样理解对象转换问题?

console.log({}==0) //false
console.log([]==0) //true

这个是什么原理,到底调用了什么方法?


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这里 toString 了。

[].toString() 是空字符串 ''(因为数组直接 toString 就相当于用逗号做 join),'' == 0 成立。

https://developer.mozilla.org...

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