Ptt 大爆卦 | Var let - 前往 https://stackoverflow.com/questions/762011/whats-the-difference-between-using-let-and-var

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並前往https://stackoverflow.com/questions/762011/whats-the-difference-between-using-let-and-var

What's the difference between using "let" and "var"? - Stack ...

The main difference is scoping rules. Variables declared by var keyword are scoped to the immediate function body (hence the function scope) while let variables ...

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