What happens when you declare the same var twice? What about let?

What happens when you declare the same var twice? What about let?

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

标签: interviewbit, javascript, topic-specific, frontend

参考答案摘要

Declaring the same var variable multiple times does not cause an error. JavaScript simply ignores the extra declarations. With let, redeclaring the same variable in the same scope throws an error. Thi...

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