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Q3: What is a Polyfill? Write a polyfill for Array.prototype.map . Study Tips to Master These Questions This comprehensive
It was a sunny morning in Bangalore, and Rohan, a young and ambitious software engineer, was getting ready for his big day - his JavaScript interview at a top tech firm. He had been preparing for weeks, but he still felt a bit anxious.
Guarantees that the function executes at most once every specified time interval. It is ideal for scroll, resize, or mouse-movement tracking. How to Effectively Use JavaScript Interview PDFs
When you look up a property or method on an object, the JavaScript engine first checks the object itself. If it is not found, the engine searches the object's internal [[Prototype]] (accessible via Object.getPrototypeOf() or __proto__ ). This search continues up the chain until it finds the property or reaches null , which signifies the end of the chain. Code Example: Manual Prototype Linking