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7 JavaScript Interview Questions to Test How Smart You Really Are
- JavaScript interview questions are designed to test candidates' understanding and problem-solving skills.
- Common challenges include counting with delays using setTimeout(), handling asynchronous operations with Promise.all(), and understanding the 'this' keyword.
- Closures in JavaScript allow functions to remember variables from their creation context, which is useful for maintaining state.
- Using .bind() helps ensure correct 'this' context when passing functions as arguments to other functions.
- JavaScript treats functions as first-class citizens, allowing them to be assigned to variables, passed as arguments, and returned from functions.
- Prototypal inheritance in JavaScript involves objects pointing to other objects (prototypes) in a chain.
- Understanding these concepts is crucial for mastering JavaScript and avoiding common pitfalls.
- Know-how of JavaScript nuances like timing, context, and function behavior is essential for writing efficient and bug-free code.
- Being able to explain the 'why' behind code functioning is as important as knowing 'what' works.
- Mastering JavaScript involves grasping these nuances and being able to apply them confidently in interviews and real-world scenarios.
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