Why can useEffect(() => {}, []) still run twice in development?

Why can useEffect(() => {}, []) still run twice in development?

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, react, topic-specific, javascript, frontend

参考答案摘要

At first glance, this feels confusing because an empty dependency array means the effect should run only once. And in production, it does. The reason it can run twice in development is React Strict Mo...

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