Ptt 大爆卦 | es6 $ variable - 前往 https://softwareengineering.stackexchange.com/questions/274342/is-there-any-reason-to-use-the-var-keyword-in-es6

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Is there any reason to use the "var" keyword in ES6?

let declares block-scoped variables. var confuses us by referring to the same variable throughout the function.

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