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146 coding exercises for javascript on exercism. from gigasecond to elyses enchantments..

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Key Features of JavaScript

Runs almost everywhere.

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No types required

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JavaScript Practice for Beginners: 8 Free JavaScript Exercise Sites

updated Apr 17, 2024

What are the best sites for JavaScript practice for beginners?

Where can you find the best JavaScript exercises and coding challenges?

Whether you are new to coding or have been learning for a while already, you want to have a go-to list of fun JavaScript practice sites to improve your skills continuously.

Because the truth is:

The only way to become a skilled JavaScript developer is to use the language for as many real-world projects as you can.

Sure, you will start small in the beginning. But as your skills progress, you will build more complex projects that require a deeper understanding of the language.

To help you get started, I’ll share my favorite JavaScript practice sites with free and fun JS exercises, challenges, and quizzes in this guide.

By the time you finish reading it, you will have a list of go-to resources to brush up your JavaScript and discover new ways to use the language for real-life projects.

If you truly want to stand out from others and become a professional JavaScript developer, these websites can help you take your skills to the next level.

FYI: I’ve already covered JavaScript projects for beginners in another article . If you haven’t already, definitely check it out, too.

Now let’s get started!

Please note: This post contains affiliate links to products I use and recommend. I may receive a small commission if you purchase through one of my links, at no additional cost to you. Thank you for your support!

What is JavaScript? What can you do with JavaScript?

If you’re not familiar with JavaScript, let’s take a few moments to go through the fundamentals first.

JavaScript is a programming language used for making websites more interactive and dynamic.

What does that mean exactly?

To understand how JavaScript works, you need to know how front-end developers build websites in general .

Here’s a quick overview of the three languages used for creating and building web pages:

• HTML or HyperText Markup Language: You can use HTML to create the basic structure and the content for a web page: menu bar, content area, sidebar, bottom footer, etc.
• CSS or Cascading Style Sheets: CSS allows you to select individual HTML elements and change their appearance. In other words, CSS makes HTML pretty.
• JavaScript : JS takes those static HTML/CSS elements and adds life to them. For example, it allows you to create elements that the user can interact with, such as drop-down menus, contact forms, modal windows, animations, interactive maps, and more.

All in all, JavaScript makes websites more engaging and interesting.

For more details, make sure to read my complete guide on front-end and backend web development .

Why learn JavaScript?

If you are new to coding and not sure whether JavaScript is the right programming language to learn, don’t worry.

Before you choose your first programming language , make sure you know what you want to create and build with code in the future.

Depending on your specialization, you need to learn a specific set of programming languages and other tools.

Hence, only learn JavaScript if it’s a language you can use for the type of projects you want to work on.

With that said, here are 5 good reasons to learn JavaScript this year:

1: JavaScript is in high demand

If you are serious about becoming a JavaScript developer, you are going to love the fact that JavaScript is one of the most sought-after skills in tech today.

According to the Devskiller IT Skills Report , 75% of companies are looking for JavaScript developers:

Furthermore, searching for “JavaScript developer” on the Indeed job portal returns over 20,000 jobs requiring this skill – alone in the US.

2: JavaScript developers are well-paid

So we know that there are plenty of job openings for skilled JavaScript developers. But how much do they make?

According to Indeed, the average base salary for JavaScript developers in the US is $110,687 per year .

You can find out more in this super comprehensive JavaScript salary guide .

3: JavaScript is beginner-friendly

If you are new to coding, I recommend picking a language that allows you to focus on learning how coding works and how you can build your own, useful projects asap.

Choosing an easy language means you will spend less time troubleshooting your code and trying to understand the syntax. Thus, you’ll have more time to actually learning how to code.

Luckily, JavaScript is one of the easiest programming languages for beginners .

Now, while the syntax isn’t always the easiest to grasp, you will always find answers to your JavaScript questions thanks to the massive global community of JavaScript experts. This helps you troubleshoot your code faster and makes learning how to code much easier.

4: JavaScript is versatile

JavaScript is an extremely versatile programming language. You can use it for front-end web development to create stunning website interfaces, but also for backend coding using Node.js.

Also, you can develop web apps, mobile apps, and desktop apps using React, React Native, and Electron.

If you want to become a front-end web developer , JavaScript is a must-have skill.

But you could use your JavaScript expertise in the future to work as a full-stack developer, software engineer, or game developer, for example.

Hence, even if you are new to coding and not sure what you want to do in the future, JavaScript doesn’t restrict you to just one area in tech.

5: You can learn JavaScript for free

Last but not least, learning JavaScript doesn’t have to be expensive!

If you are new to coding, I recommend starting with free resources to get a hang of how JavaScript works. You will find tons of ideas in my guide with 100+ free places to learn how to code .

If you enjoy working with the language, consider investing in a paid course that includes as many practical coding projects as possible.

Building small projects and solving coding problems is the only way to improve your skills and learn how to use JavaScript for building real-life projects.

Therefore, you want to pick a course that offers as many portfolio-ready projects as possible , such as these two courses on Udemy:

• JavaScript Web Projects: 20 Projects to Build for Your Portfolio You get to build 20 practical portfolio projects throughout the course – even if you are entirely new to programming. That kind of a portfolio is going to look great when you apply for your first entry-level job.
• Modern JavaScript From The Beginning Whether you’re a beginner or an established JS developer already, this course has something for everyone. You will build 10 portfolio projects throughout the course, ranging from a simple calculator to more demanding exercises.

For more resources, check out these recommended JavaScript courses and tutorials .

JavaScript practice for beginners: 8 free sites with JavaScript exercises

Here are the 8 top JavaScript practice sites we’ll cover in this post:

• Learn JavaScript
• freeCodeCamp.org
• JavaScript Hero
• Learn JavaScript on Codecademy
• Khan Academy: JavaScript Quiz

Remember to share and save this guide for later!

1. Edabit JavaScript Challenges

Edabit offers 2,500+ hands-on JavaScript practice challenges ranging from very easy to expert-level tasks.

You can practice directly in your web browser, and all exercises are free.

Creating an account isn’t necessary, but you can track your progress more easily when logged in. Also, you will get access to the solutions for all practice challenges as a registered user.

In addition to JavaScript, you can also find practice exercises for C#, C++, Java, PHP, Python, Ruby, and Swift on Edabit.

Price: Free

Skill level: Beginner to expert

→ Start practising JavaScript with Edabit here

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2. w3resource JavaScript Exercises, Practice, Solution

w3resource’s JavaScript practice directory includes hundreds of free JavaScript challengers ranging from beginner to intermediate in difficulty.

If you are entire new to coding, make sure you are somewhat familiar with JavaScript and its syntax before these exercises.

One of the best places to learn JavaScript is freeCodeCamp.org , for example. Their courses are 100% free and you can start learning in 2 minutes.

w3resource also offers free tutorials for other popular technologies, such as:

• Responsive web design

Skill level: Beginner to intermediate

→ Start practising JavaScript with w3resource here

3. Learn JavaScript

If you are looking for a complete online course with beginner-level JavaScript practice exercises, Learn JavaScript is definitely worth checking out.

Their JavaScript course covers the fundamentals of the syntax, giving you a solid foundation for practising your skills while building real-life projects as you go.

The lessons are to the point, fluff-free, and you will get a quick recap after each module to support your learning.

You can practice JavaScript directly in your web browser, solving interactive challenges and building meaningful coding projects.

Price: Free trial, Pro plan unlocks all content

→ Start practising JavaScript with Learn JavaScript here

4. W3Schools JavaScript Exercises

W3Schools is one of the best places to find free JavaScript exercises and practice challenges.

If you are entirely new to JavaScript, start learning with their free JS tutorial for absolute beginners . You will go through quick lessons to learn the syntax and apply what you learn right away to hands-on coding exercises and quizzes.

If you are new to coding, W3Schools also offers free tutorials in other popular languages like:

→ Start practising JavaScript with W3Schools here

5. freeCodeCamp.org

freeCodeCamp is one of the best websites to learn to code from scratch, and they offer a ton of free JavaScript practice material ranging from beginner to intermediate level skills.

The freeCodeCamp curriculum starts with HTML and CSS, after which you will start learning and practising JavaScript.

Hence, if you are new to programming, remember that you need to learn at least some HTML and CSS before tackling JavaScript. That’s another reason why freeCodeCamp is a fantastic place to start. You can learn everything in one place – for 100% free.

→ Start practising JavaScript with freeCodeCamp here

6. JavaScript Hero

JavaScript Hero is a simple but effective JavaScript practice platform for beginners. You will start with the basics and learn how variables, functions, parameters, and other syntax fundamentals work.

Each lesson includes a quick exercise based on what you just learned. If you run into difficulties, you’ll find a helpful hint for each exercise. Also, JavaScript Hero provides a solution for all lessons and practice challenges.

→ Start practising JavaScript with JavaScript hero here

7. Codecademy: Learn JavaScript

Learn JavaScript is Code c ademy’s free JavaScript course for beginners. Although the course is free per se, you only get access to a limited number of JavaScript exercises, practice challenges, and projects. If you are new to coding, this is more than enough to get started.

And don’t forget to grab your free JavaScript cheatsheet on Codecademy, too.

If you enjoy learning with Codecademy, you can unlock the entire course catalog with hundreds of real-life projects with the Pro plan .

Codecademy Pro also gives you unlimited access to the Front-End Engineer career path that teaches you everything you need to know to create beautiful web experiences and start a career as a front-end developer.

If you aren’t familiar with them, you can learn more in my complete Codecademy review .

Price: Free (with limited content), Pro plans start at $19.99 when paid annually

Skill-level: Beginner to intermediate

→ Start practising JavaScript with Codecademy here

8. Khan Academy: JavaScript Quiz

Khan Academy is a free online course platform for popular topics such as computer programming , math, economics, and science. Although a lot of their content is aimed at kids and students, it’s perfectly suited for any age.

Their free Intro to JavaScript course teaches you JS from the ground up, even if you are completely new to tech. You will learn about variables, data types, functions, conditionals, loops, and more.

After the course, you can finish a set of JavaScript practice challenges to test your skills.

→ Start practising JavaScript with Khan Academy here

FAQ: JavaScript practice exercises

Some of the best places to practice JavaScript include Edabit , w3resource , freeCodecamp.org , Codecademy , and W3Schools . They all offer free JavaScript exercises and coding challengers for beginner and intermediate skill levels.

The best way to practice JavaScript is to learn the theory and syntax first. As you go, practice your skills with simple exercises, and start building more complex projects as your skills improve. The concepts build on top of each other. Thus, make sure you feel comfortable with a given topic before moving on to the next one.

If you are new to JavaScript, the easiest way to practice is to take breaks from following tutorials. Take notes of what you learn and try to solve small coding problems with JavaScript on your own without referring to your course or tutorial. Hence, start very small and only proceed to the next topic once you feel comfortable with what you just learned.

You can learn how JavaScript works in 1 week, yes. You may feel comfortable enough to solve small, simple coding problems with JavaScript after a few days of learning the syntax. But it takes much longer to become job-ready and to launch a career as a JavaScript developer. Hence, one week is enough to get an understanding of whether you enjoy working with JavaScript and if you want to continue learning more about it.

In theory you can, yes, but it wouldn’t make much sense. JavaScript is so closely intertwined with HTML and CSS that you shouldn’t learn just one of them. Remember, JavaScript is used to make static websites more dynamic, interactive, and engaging. Without HTML and CSS, you won’t have anything on your website to apply JavaScript to.

Whether you learn Java or JavaScript depends on what you want to build with code in the future. If you want to become a front-end web developer and create gorgeous websites, JavaScript is a must-have tool in your skillset. Java is used for back-end (server-side) development. Thus, if you are more interested back-end programming and want to build desktop apps or Android mobile apps, for example, Java can be a valuable skill on the job market.

I have written a separate article with the best JavaScript project ideas with source code – check it out!

What you need to start practising JavaScript

1. code editor.

I recommend installing a code editor on your computer, although you can use online code editors, too.

Here are a few free code editors you may want to try out:

• Sublime Text

For more options, check out my article with the best text editors for coding and web development .

2. Web browser

Since JavaScript runs directly in your web browser, you can simply write your code and instantly test it in your browser.

Make sure you use a modern web browser such as Google Chrome or Mozilla Firefox. You need good developer tools so that you can check the console for any errors in your code and debug them.

3. JavaScript tutorials and courses

If you are new to JavaScript, I recommend trying a few different resources to learn how the language works.

We all have different learning styles, and it’s important that you find out how you learn best.

If video tutorials are easier to follow than going through a physical book, be mindful of that and use materials that support your learning.

I’ve listed some of my recommended JavaScript courses here .

For even more resources, check out these top web development courses , too.

4. JavaScript syntax cheatsheet

Wrapping your head around the syntax can be tricky in the beginning. Using a cheatsheet is a quick way to save time when you need a quick refresher or want to double-check something.

I love this free JavaScript cheatsheet on Codecademy. For a compact PDF version, check out this free JS cheatsheet .

5. Portfolio for your JavaScript projects

As you work through your JavaScript practices and your skills improve, you will start building more complex JavaScript projects.

To showcase your skills and best work samples to potential employers, you want to set up a professional-looking portfolio website. It doesn’t have to be anything too fancy – a simple one-page website is more than enough to get started.

Keep your design clean and clear, and don’t be afraid to show some personality!

To help you get started, I’ve written a free step-by-step guide for creating a portfolio website from scratch .

Summing it up: Where to find the best JavaScript exercises and practice projects

This article showed you a handful of great JavaScript practice sites for improving your coding skills at your own pace.

I hope you found a few helpful resources for beginner-friendly and fun JavaScript exercises and coding challenges!

So the question is: what are you going to build first? Please share your thoughts in the comments below!

If you need some help with your JavaScript practice projects, check out these top JavaScript and jQuery courses and tutorials .

For my proven learning strategy, check out the best way to learn JavaScript from scratch .

Make sure to bookmark this article and share it with others, too. Thank you for your support!

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About mikke.

Hi, I’m Mikke! I’m a blogger, freelance web developer, and online business nerd. Join me here on MikkeGoes.com to learn how to code for free , build a professional portfolio website , launch a tech side hustle , and make money coding . When I’m not blogging, you will find me sipping strong coffee and biking around town in Berlin. Learn how I taught myself tech skills and became a web dev entrepreneur here . And come say hi on Twitter !

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List of Problems

This page contains the list of all programming problems in no particular order. If you have solved a problem, its row turns green. Click on any problem to start coding!

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Posted on May 9, 2020

FREE PDF: 50 JavaScript Coding Challenges for Absolute Beginners

Hi Dev.To Community,

I'm sharing a PDF with 50 JavaScript coding challenges (and their solutions). All solutions are presented in classic JavaScript syntax in order to appeal to beginners.

Advanced users can have fun too!

Download link: https://codeguppy.com/site/download/50_coding_challenges.pdf

Happy coding!

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YouTube Channel

After you read this article, please remember to check out also the “Coding Adventures” YouTube channel. You’ll find there a series of fun and engaging coding lessons and cool projects.

Channel main page Coding lessons playlist Coding projects playlist

The coding challenges in this article are intended for code newbies, therefore the solutions are implemented using only simple / classical programming elements. Each solution is acompanied by an online link that helps you quickly run it in a code playground.

If you prefer to open all solutions in a single, unified coding playgroud please open the 50 Coding Challenges project.

The code is making use of the codeguppy specific function println() to print the results. If you want to run these solutions outside CodeGuppy, just replace println() with console.log() then run them using your browser console tool or node.js.

Coding challenge #1: Print numbers from 1 to 10

Edit in coding playground

Coding challenge #2: Print the odd numbers less than 100

Coding challenge #3: print the multiplication table with 7, coding challenge #4: print all the multiplication tables with numbers from 1 to 10, coding challenge #5: calculate the sum of numbers from 1 to 10, coding challenge #6: calculate 10, coding challenge #7: calculate the sum of odd numbers greater than 10 and less than 30, coding challenge #8: create a function that will convert from celsius to fahrenheit, coding challenge #9: create a function that will convert from fahrenheit to celsius, coding challenge #10: calculate the sum of numbers in an array of numbers, coding challenge #11: calculate the average of the numbers in an array of numbers, coding challenge #12: create a function that receives an array of numbers and returns an array containing only the positive numbers, coding challenge #13: find the maximum number in an array of numbers, coding challenge #14: print the first 10 fibonacci numbers without recursion, coding challenge #15: create a function that will find the nth fibonacci number using recursion, coding challenge #16: create a function that will return a boolean specifying if a number is prime, coding challenge #17: calculate the sum of digits of a positive integer number, coding challenge #18: print the first 100 prime numbers, coding challenge #19: create a function that will return in an array the first "nprimes" prime numbers greater than a particular number "startat", coding challenge #20: rotate an array to the left 1 position, coding challenge #21: rotate an array to the right 1 position, coding challenge #22: reverse an array, coding challenge #23: reverse a string, coding challenge #24: create a function that will merge two arrays and return the result as a new array, coding challenge #25: create a function that will receive two arrays of numbers as arguments and return an array composed of all the numbers that are either in the first array or second array but not in both, coding challenge #26: create a function that will receive two arrays and will return an array with elements that are in the first array but not in the second, coding challenge #27: create a function that will receive an array of numbers as argument and will return a new array with distinct elements, coding challenge #28: calculate the sum of first 100 prime numbers, coding challenge #29: print the distance between the first 100 prime numbers, coding challenge #30-a: create a function that will add two positive numbers of indefinite size. the numbers are received as strings and the result should be also provided as string., coding challenge #30-b: create a function that will add two positive numbers of indefinite size. the numbers are received as strings and the result should be also provided as string., coding challenge #31a. create a function that will return the number of words in a text, coding challenge #31b. create a function that will return the number of words in a text, coding challenge #32. create a function that will capitalize the first letter of each word in a text, coding challenge #33. calculate the sum of numbers received in a comma delimited string, coding challenge #34. create a function that will return an array with words inside a text, coding challenge #35. create a function to convert a csv text to a “bi-dimensional” array, coding challenge #36. create a function that converts a string to an array of characters, coding challenge #37. create a function that will convert a string in an array containing the ascii codes of each character, coding challenge #38. create a function that will convert an array containing ascii codes in a string, coding challenge #39. implement the caesar cypher, coding challenge #40. implement the bubble sort algorithm for an array of numbers, coding challenge #41. create a function to calculate the distance between two points defined by their x, y coordinates, coding challenge #42. create a function that will return a boolean value indicating if two circles defined by center coordinates and radius are intersecting, coding challenge 43. create a function that will receive a bi-dimensional array as argument and a number and will extract as a unidimensional array the column specified by the number, coding challenge #44. create a function that will convert a string containing a binary number into a number, coding challenge #45. create a function to calculate the sum of all the numbers in a jagged array (array contains numbers or other arrays of numbers on an unlimited number of levels), coding challenge #46-a. find the maximum number in a jagged array of numbers or array of numbers, coding challenge #46-b. find the maximum number in a jagged array of numbers or array of numbers, coding challenge #47. deep copy a jagged array with numbers or other arrays in a new array, coding challenge #48. create a function to return the longest word(s) in a string, coding challenge #49. shuffle an array of strings, coding challenge #50. create a function that will receive n as argument and return an array of n unique random numbers from 1 to n., coding challenge #51. find the frequency of characters inside a string. return the result as an array of objects. each object has 2 fields: character and number of occurrences., coding challenge #52. calculate fibonacci(500) with high precision (all digits), coding challenge #53. calculate 70 with high precision (all digits).

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javascript-exercises

Here are 78 public repositories matching this topic..., sajidhamdard / learnjavascript.

Complete JavaScript Learning Material in a Single Repo

• Updated Apr 25, 2024

dinanathsj29 / javascript-exercise-beginners

Lets go-through, learn and understand different logical Javascript exercises and algorithms for beginners.

• Updated Apr 6, 2020

DanielObara / Javascript-Rocketseat

JS @Rocketseat Challenge Excercises 📖

• Updated Aug 8, 2020

KBPsystem777 / JSexercises

Simple solutions and resources to help beginners in solving JavaScript algorithm exercises

• Updated Jan 31, 2019

jfarmer / exercises-js-fundamentals

A collection of JavaScript exercises for new learners

• Updated Aug 3, 2023

harshalslimaye / awesome-javascript-practice-exercises

A curated list of the best JavaScript practice exercises to get started.

• Updated Nov 22, 2023

senocakburak / 30-Days-Of-JS-Solutions

This repository has solutions of the exercises that Asabaneh's 30-Day-Of-JavaScript repository

• Updated Dec 4, 2022

omonimus1 / BeginnerJSTutorial-

A beginner Javascript Tutorial Based on the theory materials and all the exercises provided by W3School

• Updated Apr 25, 2020

FarhadG / javascript-summons

A collection of Javascript exercises to get you grooving.

• Updated Feb 11, 2018

srmeneses / JS-exercise-event-emitter

Exercício de event emitter em Javascript usando TDD

• Updated Oct 13, 2020

Josie-N / javascript-challenges

Basic, beginner-friendly JavaScript challenges, to test and apply your fundamentals.

• Updated Sep 29, 2019

GuilhermeBalog / exercicios-de-javascript

🛡️ Some Javascript exercises

• Updated Jul 10, 2019

Tamerlan1993 / Javascript-exercises

Some Javascript exercises 🚀

• Updated Sep 6, 2020

Awes0meM4n / tragaperrajs

Slot Machine in JS / Máquina tragaperras en JS

• Updated Mar 26, 2018

jaiimeriios / js-apps

JavaScript simple applications, exercises & examples 🍃

• Updated May 30, 2023

codeguage-code / exercises

Solutions to exercises at Codeguage.

• Updated Jun 6, 2023

germancutraro / Javascript-Exercises-in-a-functional-way

😍 easy exercices that i did in a functional way using js-es6 version

• Updated Jun 4, 2017

JoyceFatima / Javascript-Exercises

• Updated Feb 22, 2022

felipeozalmeida / javascript-exercises

This repo is intended to showcase my abilities, oops, publish some Javascript exercises that I've got to do in college.

• Updated Jan 6, 2023

orassayag / codewars

Built in May 2021. JavaScript exercises in different levels from the 'codewars.com' website, with my solution and the most popular solution, with test cases.

• Updated May 30, 2021

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15 Best Platforms To Practice JavaScript self.__wrap_b=(t,n,e)=>{e=e||document.querySelector(`[data-br="${t}"]`);let a=e.parentElement,r=R=>e.style.maxWidth=R+"px";e.style.maxWidth="";let o=a.clientWidth,c=a.clientHeight,i=o/2-.25,l=o+.5,u;if(o){for(;i+1 {self.__wrap_b(0,+e.dataset.brr,e)})).observe(a):process.env.NODE_ENV==="development"&&console.warn("The browser you are using does not support the ResizeObserver API. Please consider add polyfill for this API to avoid potential layout shifts or upgrade your browser. Read more: https://github.com/shuding/react-wrap-balancer#browser-support-information"))};self.__wrap_b(":R4mr36:",1)

HackerEarth

Freecodecamp, geeksforgeeks, educative.io, codeacademy, javascript questions – by lydia hallie, javascript coding practice – by learning zone, 123 essential javascript questions – by yuri katkov, javascript interview question – by sudheer j.

Learning any programming language is not enough, and we need to practice.

If you are learning JavaScript, I have curated the ten best platforms to practice JavaScript for free.

Codedamn is an interactive programming platform; you will learn and build projects side by side. It offers over 500+ coding problems for you to practice.

You can solve 3-5 questions daily without waiting another day to solve more questions.

Codedamn has community support, if you get stuck on a particular problem, you can ask for help, and developers will be ready to help you anytime.

The problem’s difficulty level ranges from easy to hard. But you can go at your pace.

Here is the link to solve 500+ JavaScript problems .

If you think these problems are too advanced, you can learn about JavaScript basics, which codedamn offers for free.

Link to learn JavaScript: JavaScript basics

On codewars, you will get all types of questions ranging from easy to complex.

You will get instant feedback on your answers. Your rank will level up as you progress.

If you get stuck, codewars have a senior developers community that will help you.

Link to practice on codewars

codin games is a gamified learning platform. On codin games, you will code and execute the correct code to save yourself from obstacles and enemies.

You can compete individually or by teaming up with other fellow developers.

You can compare your and other developer code to improve your JavaScript coding skills.

You can play and build your developer profile, and You can even apply for jobs. You need to solve complex problems and be consistent on the platform to stand out from others.

Link to practice on the codin game.

If you don’t know Solo Learn, you are not a developer. Earlier, Solo learn was only available as a mobile application, and now you can also learn on the web.

Solo learn offers a JavaScript course and exercise to improve your JavaScript coding skills.

At the end of each topic, you will get practice problems you need to solve to unlock the next section.

Link to practice on Solo learn .

Edabit has interactive exercises ranging from easy to complex, and you can filter the challenges using tags. You can practice your JavaScript coding skills for free.

If you get stuck on any question, you can unlock the solution, but you will lose the XPs you have gained.

Alternatively, the resources tab contains the concepts to learn to solve that problem.

Link to practice JavaScript at edabit.

Hacker earth has a set of questions based on if you are preparing for an interview or you are a beginner at programming ,

It has a codemonk section where you will get questions based on Data Structures and algorithms. Best suited if you know DSA and algorithms, or you can practice easy and medium-difficulty problems.

On hacker earth, you can participate in challenges, try to build your developer profile, and stand out from other developers. And apply for jobs at companies.

Link to practice at HackerEarth

On programiz, you can practice JavaScript for free, and You will get the list of concepts to learn and practice problems at the end of each concept to retain what you have learned.

There are separate JavaScript examples sections available there, and you will find the JavaScript-related question and some general programming questions based on the topics you have learned.

Link to practice JavaScript examples at programiz.

Freecodecamp is popular among developers because of its ocean of totally free courses.

Freecodecamp offers 100s of exercises related to JavaScript, ranging from basic concepts, regular expressions, array methods, objects, data structure, and algorithms.

These exercises are for beginners to advanced javascript developers.

Link to practice on freecodecamp

To practice on GeeksforGeeks, you need to create an account once you create an account with them, head over to the below link to practice JavaScript.

This platform best suits you if you have Data Structure and algorithms knowledge.

You can filter out the problems based on the companies that have asked about that problem or on the concepts like Arrays, Objects, and Strings.

You can even choose the problem difficulty level from school to pro level.

Link to practice on GeeksforGeeks

The Educative has an assessment test. You can take the JavaScript assessment test, which takes around 20 minutes to complete.

The assessment test consists of all the topics, from fundamental concepts like variables, data types, and conditional statements to advanced concepts like arrays and objects.

Link to the assessment test

On Codecademy, you will find a javascript project-based course that is very helpful if you want to learn and build projects at the same time using javascript.

Link to javascript courses

I have curated four GitHub repositories that are helpful. You will gain problem-solving skills, and some repositories will help you prepare for the interview.

This repo has more than 500+ questions with answers, and this repo is available in 18 other languages. In this repo, you will find basic to very advanced questions, and some are very difficult.

Link to repo

This repo has more than 100+ javascript exercises with the answers. This repo will give you insights into How the recruiter will ask questions in a javascript-related interview.

You will find 123 essential javascript interview-related questions, which you can practice on your code editor or online to crack practical interviews. This repo has 4K stars, and you will find some exciting questions that might help you build problem-solving skills.

You will find 1000+ questions ? related to javascript on this repo, which you can practice. Questions range from the difficulty level of beginners to advanced.

I hope you found this article helpful, You can choose any platform and practice it to improve your developer profile, gain problem-solving skills and move to the next platform.

Thanks for reading.

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Solve common problems in your JavaScript code

The following links point to solutions to common problems you may encounter when writing JavaScript.

Common beginner's mistakes

Correct spelling and casing.

If your code doesn't work and/or the browser complains that something is undefined, check that you've spelt all your variable names, function names, etc. correctly.

Some common built-in browser functions that cause problems are:

Semicolon position

You need to make sure you don't place any semicolons incorrectly. For example:

There are a number of things that can go wrong with functions.

One of the most common errors is to declare the function, but not call it anywhere. For example:

This code won't do anything unless you call it with the following statement:

Function scope

Remember that functions have their own scope — you can't access a variable value set inside a function from outside the function, unless you declared the variable globally (i.e. not inside any functions), or return the value from the function.

Running code after a return statement

Remember also that when you return from a function, the JavaScript interpreter exits the function — no code after the return statement will run.

In fact, some browsers (like Firefox) will give you an error message in the developer console if you have code after a return statement. Firefox gives you "unreachable code after return statement".

Object notation versus normal assignment

When you assign something normally in JavaScript, you use a single equals sign, e.g.:

With Objects , however, you need to take care to use the correct syntax. The object must be surrounded by curly braces, member names must be separated from their values using colons, and members must be separated by commas. For example:

Basic definitions

• What is JavaScript?
• What is a variable?
• What are strings?
• What is an array?
• What is a loop?
• What is a function?
• What is an event?
• What is an object?
• What is JSON?
• What is a web API?
• What is the DOM?

Basic use cases

• How do you add JavaScript to your page?
• How do you add comments to JavaScript code?
• How do you declare a variable?
• How do you initialize a variable with a value?
• How do you update a variable's value? (also see Assignment operators )
• What data types can values have in JavaScript?
• What does 'loosely typed' mean?
• What types of number do you have to deal with in web development?
• How do you do basic math in JavaScript?
• What is operator precedence, and how is it handled in JavaScript?
• How do you increment and decrement values in JavaScript?
• How do you compare values in JavaScript? (e.g. to see which one is bigger, or to see if one value is equal to another).
• How do you create a string in JavaScript?
• Do you have to use single quotes or double quotes?
• How do you escape characters in strings?
• How do you join strings together?
• Can you join strings and numbers together?
• How do you find the length of a string?
• How do you find what character is at a certain position in a string?
• How do you find and extract a specific substring from a string?
• How do you change the case of a string?
• How do you replace one specific substring with another?
• How do you create an array?
• How do you access and modify the items in an array? (this includes multidimensional arrays)
• How do you find the length of an array?
• How do you add items to an array?
• How do you remove items from an array?
• How do you split a string into array items, or join array items into a string?

Debugging JavaScript

• What are the basic types of error?
• What are browser developer tools, and how do you access them?
• How do you log a value to the JavaScript console?
• How do you use breakpoints and other JavaScript debugging features?

For more information on JavaScript debugging, see Handling common JavaScript problems . Also, see Other common errors for a description of common errors.

Making decisions in code

• How do you execute different blocks of code, depending on a variable's value or other condition?
• How do you use if ...else statements?
• How do you nest one decision block inside another?
• How do you use AND, OR, and NOT operators in JavaScript?
• How do you conveniently handle a large number of choices for one condition?
• How do you use a ternary operator to make a quick choice between two options based on a true or false test?

Looping/iteration

• How do you run the same bit of code over and over again?
• How do you exit a loop before the end if a certain condition is met?
• How do you skip to the next iteration of a loop if a certain condition is met?
• How do you use while and do...while loops?

Intermediate use cases

• How do you find functions in the browser?
• What is the difference between a function and a method?
• How do you create your own functions?
• How do you run (call, or invoke) a function?
• What is an anonymous function?
• How do you specify parameters (or arguments) when invoking a function?
• What is function scope?
• What are return values, and how do you use them?
• How do you create an object?
• What is dot notation?
• What is bracket notation?
• How do you get and set the methods and properties of an object?
• What is this , in the context of an object?
• What is object-oriented programming?
• What are constructors and instances, and how do you create them?
• What different ways are there to create objects in JavaScript?
• How do you structure JSON data, and read it from JavaScript?
• How can you load a JSON file into a page?
• How do you convert a JSON object to a text string, and back again?
• What are event handlers and how do you use them?
• What are inline event handlers?
• What does the addEventListener() function do, and how do you use it?
• Which mechanism should I use to add event code to my web pages?
• What are event objects, and how do you use them?
• How do you prevent default event behavior?
• How do events fire on nested elements? (event propagation, also related — event bubbling and capturing)
• What is event delegation, and how does it work?

Object-oriented JavaScript

• What are object prototypes?
• What is the constructor property, and how can you use it?
• How do you add methods to the constructor?
• How do you create a new constructor that inherits its members from a parent constructor?
• When should you use inheritance in JavaScript?
• How do you manipulate the DOM (e.g. adding or removing elements) using JavaScript?

• Guidelines to Write Experiences
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• HPE Interview Experience | On-Campus 2021
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• Leucine Interview Experience 2024 Off-Campus
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• Deloitte Interview Experience | On-Campus 2021

HPE Interview Experience (On-Campus) 2024

In the ever-evolving landscape of technology, securing a position with a renowned company like Hewlett-Packard Enterprise (HPE) is a coveted opportunity for aspiring professionals. As HPE continues to innovate and shape the future of IT solutions, its interview process stands as a gateway for talented individuals to join its ranks. Let’s delve into the on-campus interview experience at HPE, offering insights into the journey of aspiring tech enthusiasts in 2024.

Preparing for the Opportunity: Research and Readiness

The journey to an HPE interview begins long before stepping foot on the campus. Aspiring candidates meticulously research the company’s history, values, products, and recent developments to gain a comprehensive understanding of HPE’s mission and vision. Armed with this knowledge, candidates prepare themselves to articulate their passion for technology and alignment with HPE’s goals during the interview process.

The On-Campus Encounter: Engaging with HPE Representatives

On the day of the interview, candidates arrive at the designated location on campus with a mix of excitement and nervous energy. HPE representatives, including recruiters and hiring managers, welcome candidates with warmth and professionalism, setting the stage for a positive and insightful interaction.

The interview process typically comprises multiple stages, including technical assessments, behavioural interviews, and sometimes group discussions or case studies. Through these interactions, HPE assesses not only candidates’ technical proficiency but also their problem-solving skills, communication abilities, and cultural fit within the organization.

Technical Assessments: Demonstrating Proficiency and Problem-Solving Skills

Technical assessments form a crucial component of the HPE interview process, especially for roles requiring specialized expertise in areas such as software development, networking, cybersecurity, and cloud computing. Candidates are presented with real-world scenarios and tasked with solving technical challenges within a specified timeframe.

These assessments provide candidates with an opportunity to showcase their knowledge, problem-solving abilities, and hands-on experience in relevant technologies. HPE evaluates candidates based on their ability to analyze problems, develop innovative solutions, and communicate their approach effectively.

Behavioural Interviews: Evaluating Cultural Fit and Soft Skills

In addition to technical assessments, behavioural interviews offer HPE insights into candidates’ soft skills, interpersonal abilities, and alignment with the company’s culture and values. Candidates are asked to share examples from their past experiences, demonstrating their leadership potential, teamwork skills, adaptability, and resilience.

Behavioural interviews often delve into candidates’ motivations, career aspirations, and willingness to learn and grow within HPE. Through these conversations, HPE seeks to identify candidates who not only possess the technical expertise required for the role but also exhibit the qualities of effective team players and future leaders.

Post-Interview Reflection: Assessing the Experience and Looking Ahead

Following the on-campus interview experience, candidates reflect on their interactions with HPE representatives and assess their performance during the various stages of the process. For some, the interview serves as a confirmation of their passion for technology and desire to contribute to HPE’s innovative endeavours. For others, it may offer valuable insights for personal and professional growth, regardless of the outcome.

Regardless of the outcome, the HPE interview experience serves as a stepping stone in the journey of aspiring tech enthusiasts, offering opportunities for learning, growth, and self-discovery. Whether successful in securing a position at HPE or not, candidates emerge from the experience with newfound insights, connections, and a deeper understanding of their aspirations in the dynamic world of technology.

Conclusion: Embracing Opportunities in Tech with HPE

The HPE interview experience on campus in 2024 embodies the company’s commitment to fostering talent, innovation, and excellence in the field of technology. Through a rigorous yet inclusive process, HPE identifies individuals who embody its core values and possess the skills and potential to drive meaningful impact within the organization.

As aspiring professionals navigate the interview process at HPE, they embark on a journey of exploration, discovery, and personal growth. Whether it leads to a career at HPE or opens doors to new opportunities elsewhere, the experience leaves an indelible mark on candidates’ paths in the ever-evolving landscape of technology.

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