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並前往https://discuss.codecademy.com/t/what-is-the-difference-between-let-and-var-when-declaring-and-what-about-reassigning/492581

What is the difference between `let` and `var` when declaring ...

So can I reassign variables using let just one time or several times? ... The let keyword was introduced in ES6 (a version of JavaScript announced in 2015) ...

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