JavaScript Interview Questions And Answers | JavaScript Interview Preparation | Simplilearn

In this video, we are going to learn about the top 25 JavaScript questions that every developer should know. Whether you’re preparing for a job interview, brushing up on your coding skills, or just getting started with JavaScript, these essential questions will help you deepen your understanding of one of the most popular programming languages today. We’ll cover important topics like functions, arrays, objects ,closures and asynchronous programming.From basic syntax to more advanced topics, this video will provide you with a solid foundation

00:00 Introduction to JavaScript Interview Questions And Answers
00:30 JavaScript Coding Problem
01:30 JavaScript Hoisting
03:32 JavaScript Closure
05:08 JavaScript this keyword
06:26 JavaScript Debounce
07:45 JavaScript Event Loop
09:10 JavaScript Deep Clone
09:54 JavaScript Promises
10:41 JavaScript Call ,Apply & Bind
12:02 JavaScript ==&=== Operator
13:12 JavaScript Inheritance
14:15 JavaScript Arrow functions
15:57 JavaScript Asynchronous Operation
18:01 JavaScript Arrays vs Objects
19:07 JavaScript Cross site scripting (Xss)
19:55 JavaScript Promise Chaining
20:50 JavaScript Event Delegation
22:20 JavaScript Generator Functions
22:41 JavaScript map() ,filter() & reduce()
23:30 JavaScript Prototype Chain
24:59 JavaScript Immediately Invoked Function Expressions (IIFE)
25:56 JavaScript .Currying
26:45 JavaScript coding Problem
28:44 JavaScript Spread Operator
29:31 JavaScript Javascript Symbols

✅ Question 1 What is JavaScript and why is it important?
Answer:avaScript is a scripting language used to make web pages interactive. It works with HTML and CSS to create dynamic content like animations, form validations, and user interactions. It’s important because it runs directly in the browser, allowing developers to create responsive and interactive web applications.

✅ Question 2 What is the difference between == and === in JavaScript?
Answer:In JavaScript, == is the loose equality operator, which compares two values after performing type coercion, meaning it converts the operands to the same type before comparing. On the other hand, === is the strict equality operator, which compares both the values and their data types without any type conversion.

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