JavaScript Interview Questions and Answers

In this video Faisal Nadeem shared 10 most important javascript interview questions and answers. This video covers the following: java scripting tutorial for beginners java scripting tutorial java scripting tutorial for beginners in tamil javascript javascript full course javascript course javascript apna college javascript projects javascript code with harry javascript tutorial for beginners javascript tutorial java scripting tutorial for beginners in hindi javascript basics javascript complete course javascript interview questions javascript interview javascript interview coding questions javascript interview prep javascript interview questions for freshers javascript interview happy javascript mock interview java and javascript interview questions javascript interview topics javascript interview course Q1) What is JavaScript? Answer: JavaScript is a scripting language used to create dynamic content on websites. Q2) Difference between var, let, and const? Answer: var: Function-scoped. let: Block-scoped, reassignable. const: Block-scoped, not reassignable. Q3) What is a closure? Answer: A closure is a function that remembers variables from its outer scope even after the outer function has finished. Q4) What is hoisting? Answer: JavaScript moves declarations to the top before execution. Q5) What is the difference between == and ===? Answer: ==: Compares values (type coercion). ===: Compares value and type (strict). Q6) What are arrow functions? Answer: A shorter syntax for functions that don't bind their own this. Q7) What is the DOM? Answer: The Document Object Model represents the page structure as a tree, allowing JS to manipulate it. Q8) What is an event loop? Answer: It handles asynchronous callbacks in JavaScript by using the call stack and task queue. Q9) Explain async/await. Answer: Syntax to write asynchronous code that looks like synchronous; used with Promises. Q10) What are Promises? Answer: Objects that represent the eventual result of an asynchronous operation. Tell me something about yourself for experience candidates in english:    • Tell Me About Yourself Interview for Exper...   Tell me something about yourself for fresher candidates in english:    • Tell Me About Yourself Interview for Fresh...   More Interview Questions and Answers Playlist    • Job Interview Questions and Answers   Youtube:    / knowledgetopper   Facebook:   / knowledgetopper   Facebook Group:   / groups   #interview #javascript #knowledgetopper #jobinterviewquestions #humanresource #hrm #jobs