Happy Rawat Javascript Interview Questions Pdf Free [upd] Upd Link

A polyfill is a piece of code (usually JavaScript on the web) used to provide modern functionality on older browsers that do not natively support it. Writing a polyfill is a favorite interview question because it tests your understanding of prototypes, context, and edge cases.

Compares two values for equality after performing type coercion (converting types if they are different). For example, 5 == "5" returns true . happy rawat javascript interview questions pdf free upd