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1. www.interviewbit.com › javascript-interview-questionsJavaScript Interview Questions and Answers (2024) - InterviewBit

   www.interviewbit.com › javascript-interview-questions

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   • What are the different data types present in javascript? To know the type of a JavaScript variable, we can use the typeof operator. 1. Primitive types.
   • Explain Hoisting in javascript. Hoisting is the default behaviour of javascript where all the variable and function declarations are moved on top. This means that irrespective of where the variables and functions are declared, they are moved on top of the scope.
   • Why do we use the word “debugger” in javascript? The debugger for the browser must be activated in order to debug the code. Built-in debuggers may be switched on and off, requiring the user to report faults.
   • Difference between “ == “ and “ === “ operators. Both are comparison operators. The difference between both the operators is that “==” is used to compare values whereas, “ === “ is used to compare both values and types.

2. Videos

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     Javascript Interview Questions ( Promises ) - Polyfills, Callbacks, Async/await, Output Based, etc

     11 Sep 2022

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     What are JavaScript PROMISES? 🤞

     21 Dec 2023

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     Promise APIs + Interview Questions 🔥 | S.02 Ep.05 - Namaste JavaScript | all, allSettled, race, any

     19 Oct 2023

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3. codeburst.io › javascript-interview-questionsJavaScript Interview Questions: Promises - codeburst

   codeburst.io › javascript-interview-questions

   Oct 23, 2020 · This article will discuss some of the most frequently asked questions in JavaScript with the intention of helping readers overcome any confusion they may have around this language. Question What are the states of a promise?

   • Author: Manu Bhardwaj

4. www.crocoder.dev › blog › promises-exercisesPromises - Code Exercises | CroCoder

   www.crocoder.dev › blog › promises-exercises

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   Jan 18, 2024 · Explore JavaScript Promises with exercises on random resolution, chained arithmetic, parallel data fetching, fastest response, and cancellation. Improve your async skills with concise code and clear explanations. Learn effective methods for handling promises, simplifying errors, and creating resilient, maintainable code.

5. towardsdev.com › javascript-promise-interview-part10 Tricky JavaScript Promise Questions You Must Practice ...

   towardsdev.com › javascript-promise-interview-part

   Sep 9, 2024 · 10 Tricky JavaScript Promise Questions You Must Practice Before an Interview. Eishta Mittal. ·. Follow. Published in. Towards Dev. ·. 3 min read. ·. Sep 9, 2024. 4. Before diving into this article, I recommend reading the following foundational pieces to build a solid understanding of JavaScript Promises:

6. medium.com › deno-the-complete-reference › someSome JavaScript promise interview questions | Tech Tonic - Medium

   medium.com › deno-the-complete-reference › some

   May 25, 2024 · In this article, we’ll go over some commonly asked interview questions on JS promises. 1 What is the difference between Promise.all and Promise.allSettled? Promise.all and...

7. thewebdev.info › 2020/08/14 › javascript-interviewJavaScript Interview Questions: Promises - The Web Dev

   thewebdev.info › 2020/08/14 › javascript-interview

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   Aug 14, 2020 · To get a job as a front end developer, we need to nail the coding interview. Promises are important parts of JavaScript because of the pervasive use of asynchronous programming. In this article, we’ll look at some common questions about JavaScript promises.

8. People also ask

   Why are promises important in JavaScript?

   • Promises are important parts of JavaScript because of the pervasive use of asynchronous programming. In this article, we’ll look at some common questions about JavaScript promises. What are Promises? Promises are one way to handle asynchronous operations in JavaScript. Each promise represents a single operation.

   JavaScript Interview Questions: Promises - The Web Dev

   thewebdev.info/2020/08/14/javascript-interview-questions-promises/

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   What are some common interview questions on JS promises?

   • In this article, we’ll go over some commonly asked interview questions on JS promises. 1 What is the difference between Promise.all and Promise.allSettled? Promise.all and Promise.allSettled are both used to handle multiple promises, but they differ in how they handle failures and successes.

   Some JavaScript promise interview questions | Tech Tonic - Medium

   medium.com/deno-the-complete-reference/some-javascript-promise-interview-questions-2e2e6c668e89

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   How to create a custom promise in JavaScript?

   • A custom Promise in JavaScript can be created using the Promise constructor, which takes an executor function as its argument. This executor function has two parameters: resolve and reject, which are both functions. Here’s a simple example: In this code snippet, is our custom Promise.

   Top 25 Promise (Programming) Interview Questions and Answers

   interviewprep.org/promise-programming-interview-questions/

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   What is the difference between a callback and a promise in JavaScript?

   • Callbacks and Promises in JavaScript are both techniques for handling asynchronous operations, but they differ significantly. A callback is a function passed into another function as an argument to be executed later. It’s the traditional way of handling async tasks in JS.

   Top 25 Promise (Programming) Interview Questions and Answers

   interviewprep.org/promise-programming-interview-questions/

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   What is promise chaining in JavaScript?

   • Promise chaining is a technique in JavaScript where promises are linked sequentially. This allows asynchronous tasks to be performed one after another, with each task starting when the previous one has completed. The .then () method returns a new promise allowing them to be chained together. Consider an example:

   Top 25 Promise (Programming) Interview Questions and Answers

   interviewprep.org/promise-programming-interview-questions/

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   What is a promise in programming?

   • A Promise in programming is an object representing the eventual completion or failure of an asynchronous operation. It’s a placeholder for a value not necessarily known when the promise is created. Promise settling refers to the state change from pending to either fulfilled or rejected. Once settled, it remains at that state and can’t be resettled.

   Top 25 Promise (Programming) Interview Questions and Answers

   interviewprep.org/promise-programming-interview-questions/

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9. interviewprep.org › promise-programming-interviewTop 25 Promise (Programming) Interview Questions and Answers

   interviewprep.org › promise-programming-interview

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   Sep 13, 2023 · Promises are used to handle asynchronous tasks in JavaScript. To manage multiple tasks, we use Promise.all () or Promise.race (). Promise.all () takes an array of promises and returns a new promise that resolves when all the input promises have resolved. It rejects if any input promise rejects.