Question

What are callbacks and callback hell in javascript . What are higher order functions?

Answer 1

Answer:

In most programming languages , functions can accept other function(s) as arguments or return a function .Such functions are called Higher order functions. In JavaScript most APIs and Modules can accept function as an argument to a function .The functions are called callbacks. Structure of callbacks hai aadr saew yi

Answer 2

Answer:

, function pointers and lambda expressions. The callback language feature in JavaScript is an important factor to its success.