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Скачать или смотреть Top 50 JavaScript Interview Questions and Answers

  • Sangam Mukherjee
  • 2024-11-06
  • 27833
Top 50 JavaScript Interview Questions and Answers
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Описание к видео Top 50 JavaScript Interview Questions and Answers

In this video we will be covering top 50 javascript interview questions and answers for beginners.

⭐▬▬▬▬▬▬ TIMESTAMPS 👋 ▬▬▬▬▬▬⭐
00:00 What are the data types in JavaScript?
01:44 What is the difference between == and ===?
03:19 What is the difference between null and undefined?
05:33 Explain the concept of hoisting in JavaScript.
07:24 What is the difference between let, const, and var?
11:28 What is variable scope in JavaScript?
14:28 Explain the difference between global and local variables.
16:25 What is the temporal dead zone?
19:19 What is variable shadowing?
20:04 What is a closure in JavaScript?
21:39 What are the different ways to define a function in JavaScript?
26:13 What is a higher-order function?
27:28 Explain the concept of function hoisting.
28:54 What is a pure function?
29:56 What is the difference between function declaration and function expression?
32:04 What is an Immediately Invoked Function Expression (IIFE)?
33:05 How do you create an object in JavaScript?
34:11 How do you add/remove properties to an object dynamically?
36:27 How do you check if a property exists in an object?
37:55 What is the purpose of the this keyword in JavaScript?
40:49 What are the different ways to loop through an array in JavaScript?
43:25 Explain the difference between for...in and for...of loops.
45:00 How do you add/remove elements from an array?
46:32 What is the purpose of the map() function?
48:23 Explain the difference between filter() and find() methods.
50:07 Explain the difference between some() and every() method.
52:44 How do you select elements in the DOM using JavaScript?
55:04 How do you create and append elements to the DOM?
56:54 Explain the difference between innerHTML and textContent.
59:07 How do you remove an element from the DOM?
01:00:37 What are arrow functions and how do they differ from regular functions?
01:02:32 Explain the concept of destructuring in JavaScript.
01:04:00 What are template literals?
01:06:23 How do you use the spread operator?
01:08:23 What are default parameters in ES6?
01:09:56 How do you use the rest parameter in functions?
01:12:01 What is callback & callback hell explain with example
01:13:59 What is a Promise in JavaScript with example?
01:16:25 How do you chain Promises?
01:18:19 What is the purpose of the Promise.all() method?
01:19:28 What is the purpose of the finally() method in Promises?
01:21:21 What is the purpose of the async await ?
01:23:25 How do you handle errors in async/await?
01:24:55 What is the difference between async/await and Promises?
01:25:39 What is the difference between default and named exports?
01:26:35 How do you convert a JavaScript object to a JSON string ?
01:28:35 How do you parse a JSON string back into a JavaScript object?
01:29:56 What is localStorage in JavaScript, and how do you store and retrieve data from it?
01:30:13 What is the difference between localStorage and sessionStorage?
01:31:35 How do you delete a specific item from localStorage or clear all data from it?

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