Why useEffect Runs Twice in React? | React Strict Mode Interview Question Explained #reactinterview

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In this video, we discuss a very common React JS interview question that confuses many developers:

Why does useEffect run twice even when the dependency array is empty?

Many developers expect useEffect, to run only once, but in development mode, it often runs twice.
In this video, you will learn:

Why useEffect executes twice in React

The role of React Strict Mode
Difference between development build and production build
Should you worry about multiple API calls?
How interviewers test attention to small React details
This is a must-know React interview concept, especially for mid to senior developers.

#ReactJS
#useEffect
#ReactInterview
#ReactStrictMode
#ReactHooks
#FrontendInterview
#JavaScript
#WebDevelopment
#ReactDeveloper
#codinginterview

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If you are preparing for React interviews, this video will help you understand real-world React behavior, not just theory.

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