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var declarations are hoisted and initialized with undefined .

'Start' is printed immediately because it is a synchronous task. happy rawat javascript interview questions pdf free upd

How do they differ from regular functions? Explain Destructuring. (Array and object). What is the Spread/Rest operator ( ... )? Explain Template Literals and their benefits. 4. JavaScript Engine & Performance What is NaN ? How do you check if a value is NaN ? Explain Prototype Inheritance. What is a Closure? (Also a common advanced question). How to Use These Questions (Free Updates) var declarations are hoisted and initialized with undefined