What is typeof operator?

Understand the fundamental differences between JavaScript's =, ==, and === operators. Learn about assignment, equality, and strict equality operations in JavaScript and how type coercion works in equality comparisons. Ideal for both beginner and intermediate level JavaScript developers looking to deepen their knowledge.

What are the differences between the =, ==, and === operators?

What is closure in Javascript?

What is the isNaN function?

What are the differences between undeclared and undefined variables?

What is a hoisting in javascript?

What are lambda or arrow functions in Javascript?

What is prototype chain?

What is the difference between Call, Apply and Bind?

What are classes in ES6 and how do you use them?

What are closures in JavaScript?

What are modules in JavaScript and why are they important?

Why do you need modules in Javascript?

What is scope in javascript

What is a service worker and how does it work?

How do you manipulate DOM using a service worker?

How do you reuse information across service worker restarts?

What is IndexedDB and how is it used in Javascript development?

What is web storage

What is a cookie?

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TOP Javascript Interview Questions