Gravitas Enterprises Interview Questions and Answers

Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.

• Variable declarations are hoisted to the top of their scope but not their assignments.

• Function declarations are fully hoisted, meaning they can be called before they are declared.

• Hoisting can lead to unexpected behavior if not understood properly.

Closure is a function that has access to its own scope, as well as the outer scope in which it was defined.

• Closure allows a function to access variables from an outer function even after the outer function has finished executing.

• It is commonly used in event handlers, callbacks, and asynchronous code.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar);