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Why useEffect Runs Twice in React? | React Strict Mode Interview Question Explained #reactinterview
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React JS 19 tutorial in Hindi 2026 - Why useEffect Runs Twice in React? | React Strict Mode Interview Question Explained #reactinterview

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This course includes

  • 24 hours of video
  • Certificate of completion
  • Access on mobile and TV

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=========== https://www.sharpener.tech/?utm_source=codestepbystep&utm_medium=youtube&utm_content=shortvideos =================== 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 react useeffect runs twice, why useeffect runs twice, react strict mode, react interview questions, useeffect empty dependency array, react useeffect explained, react strict mode interview question, react js interview, react hooks interview questions, react hooks useeffect, react development vs production, react useeffect api call twice, react debugging, react beginner to advanced, react js concepts, frontend interview questions, react js hooks, react strict mode explained, react useeffect behavior If you are preparing for React interviews, this video will help you understand real-world React behavior, not just theory. React js full course :- https://www.youtube.com/watch?v=LuNPCSNr-nE Instagram id: @code.steps Linkedin : http://github.com/anil-sidhu/ Topmate : https://topmate.io/anil_sidhu ============================ Free notes, code examples, and a complete playlist Our website : https://thecodingskills.com All Courses Codes: https://thecodingskills.com/courses

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