Which Variable-defining keyword allows its variable to be accessed (as undefined) before the line that defines it?

Which Variable-defining keyword allows its variable to be accessed (as undefined) before the line that defines it?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: medium

分类: JavaScript

标签: JavaScript

参考答案摘要

[ ] all of them all of them [ ] const const [x] var var [ ] let [Reference var vs let vs const in js](https://www.freecodecamp.org/news/var-let-and-const-whats-the-difference/) let [Reference var vs l...

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