JavaScript is a cross-platform, object-oriented scripting language. It is a small and lightweight language. Inside a host environment ( a web browser), JavaScript can be connected to the objects of its environment to provide programmatic control over them. Table of Contents JavaScript contains a standard library of objects, such as Array, Date, and Math, and a core set of language elements such as operators, control structures, and statements. Core JavaScript can be extended for a variety of purposes by supplementing it with additional objects. The best way we learn anything is by practice and exercise questions. We have started this section for those (beginner to intermediate) who are familiar with JavaScript. Hope, these exercises help you to improve your JavaScript coding skills. Currently following sections are available, we are working hard to add more exercises. Happy Coding! More to Come ! Popularity of Programming Language Worldwide, Sep 2022 compared to a year ago:Source : https://pypl.github.io/PYPL.html TIOBE Index for September 2022 Source : https://www.tiobe.com/tiobe-index/ Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page. Note : Since JavaScript is a loosely-typed, dynamic and expressive language, you may accomplish the same task in various ways. Therefore the ways (solution of the exercises) described here are not the only ways to do stuff. Rather, it would be great, if this helps you anyway to choose your own methods. [ Want to contribute to JavaScript exercises? Send your code (attached with a .zip file) to us at w3resource[at]yahoo[dot]com. Please avoid copyrighted materials.] JavaScript: Tips of the Daymap function [1, 2, 3].map(num => { if (typeof num === 'number') return; return num * 2; }); When mapping over the array, the value of num is equal to
the element it's currently looping over. In this case, the elements are numbers, so the condition of the if statement typeof num === "number" returns true. The map function creates a new array and inserts the values returned from the function. Ref: https://bit.ly/323Y0P6 JavaScript is a language that can be intimidating for newcomers. But it’s actually easier than it seems. One of the ways to get started is to do practice exercises. But there are so many online that it can be hard to choose the right ones for a beginner. Before you go and do exercises, it’s best to learn a little about the subject. In this article, we’ll be introducing JavaScript and give you a curated list of the best JavaScript practice exercises to get started. What is JavaScript?JavaScript (not to be confused with Java) scripting programming language that appeared in 1995 and is at the core of the modern World Wide Web. While HTML takes care of the content and structure of a page and CSS of the style, JS is used on the client-side for the behavior of a page—it makes it come to life. However, JavaScript is more complex than the first two. It lets you do things like:
It’s a high-level, interpreted language just like Python. High-level means that a lot of abstraction is made, so you don’t have to deal with memory management as you would with low-level languages like C or C++. Interpreted means that you don’t need to run it through a compiler, and the language can be directly executed by your computer’s processor. JavaScript is also multi-paradigm so that you can write your code in a variety of ways, like object-oriented or functional. Behind JavaScript exist a convention called ECMAScript. It is the scripting language specification it’s based on. It defines language lexicon & syntax and the APIs that should be made available in it. With time, many frameworks have been developed to improve the functionalities and development of JS. The most popular ones are React (and Next.js its sub-framework), Vue (and Nuxt.js its sub-framework), and Angular. What can it be used for?It can be used in the front-end and run on the client-side/browser or in the back-end with node.js. It’s your browser’s programming language, meaning it's the only language browser can execute. But JavaScript isn't only restricted to websites. With it, you can build:
Why learn JavaScript?Well, as you probably already observed, JavaScript is a powerful programming language that can be used to do a lot of things. It’s also very fast and relatively easy to learn compared to other languages. Here are the reasons why you should learn JS:
75% of companies are looking for JavasScript web developers.
As we’ve seen earlier, JavaScript can be used to build almost anything for the modern world. Learning this language will enable you to be versatile in the different tasks you’ll have in your career.
JavaScript is one of the easiest scripting languages out there. A lot of tools for debugging, for example, are also available to make your life as a newcomer a lot easier.
Since it’s one of the most popular programming languages, there are a lot of resources to get started. From books, blog tutorials, and videos, you can learn the way that suits you most. Learning the JavaScript fundamentalsBefore you dive into the JavaScript exercises, it’s best to learn the fundamentals. Here are a few resources I recommend to get started: If you are an absolute beginner: JavaScript exercises for all levelsSo, now let’s get into it and explore how to get started when you have understood the basics. Whatever your JavaScript skills are, here's are some JavaScript coding exercises you can do at your own pace. 1. W3 School JavaScript exercises67 exercises to practice the JavaScript basics. 2. JavaScript - Exercises, Practice, SolutionFree exercises covering the basics to the more advanced aspect of JS like the DOM (document object modal) async function, and more. 3. Show user IP address with JavaScriptAn exercise created by our co-founder Charles. Ideal for beginners to practice the basic fetch function in the CodePen code editor. 4. Add items to a wishlist with JavaScriptAn exercise created by our co-founder Charles. Ideal for beginners. You’ll practice creating a simple wishlist with JS in the CodePen code editor. 5. Some JavaScript ChallengesA resource with 47 exercises to practice whatever your level is, With exercises from well-known universities. 6. Debugging Vue.jsTutorial and exercise on how to debug your Vue.js frontend. Ideal for intermediate developers. 7. Build a React E-Commerce Web AppJavaScript tutorial and exercise on how to create a React dynamic website. 8. Progressive Web Application Development with NuxtJavaScript tutorial and exercise on how to build a PWA with a JavaScript framework. 9. Create a Node.js for E-CommerceTutorial and exercise about creating a complete eCommerce website using Snipcart, Node.js, and Koa.js as the frontend. 10. 5 Typical JavaScript Interview Exercises5 exercises to practice for a JavaScript web developer interview. JavaScript coursesIntro to JS: Drawing & AnimationThis is a free course by Khan Academy. Each section is covered with an explanatory video and then you have exercises to practice what you just learned. JavaScript Algorithms and Data StructuresFree course by freecodecamp. With 113 exercises that cover the basics of JavaScript. Learn JavaScriptFree course by Learn JavaScript. Cover the fundamentals with exercises to practice at every step. Learn JavaScriptThis is a course by Code Academy. It’s highly interactive, however, you need a subscription in order to have access to the whole course. JavaScript courses on mobileIf you are looking for a way to learn and practice JavaScript while on the go, I suggest your look at two free apps. GrasshopperThis is an app (mobile and web) developed by a team at Google. It’s a fun way to learn JavaScript by doing exercises. The course is divided into small sections that you can do when you have a few minutes. MimoMimo is an app to learn web development. While it’s not strictly limited to JavaScript you can select to learn and practice only JavaScript. While they offer a free version, you can also subscribe to Mimo Pro to unlock more exercises. ConclusionAs you may have noted, learning JavaScript is pretty accessible. Practice exercises are an important part of the learning experience. Because it’s a constantly evolving language, It’s best to keep up to date with the latest developments in the ecosystem. There are even some JavaScript podcasts if you want to learn on the go. Let us know in the comments how it went if you’ve tried any of the exercises. If you enjoyed it, consider sharing it. Where can I practice JavaScript problems?JavaScript Code Challenge Websites. Coderbyte. Level up your coding and interview skills. ... . Codewars. Achieve mastery through challenge. ... . Leet Code. A New Way to Learn. ... . Exercism. Code practice for everyone. ... . Hacker Rank. Practice coding skills. ... . Project Euler. Challenging computer programming problems. ... . Edabit. ... . JS Challenger.. How do you practice JavaScript?More videos on YouTube. Build Javascript Projects. ... . Improve Existing Projects. ... . Complete Code Challenges. ... . Join an Open Source Project. ... . Join the Coding Community. ... . Share your Javascript Learning Journey with Others. ... . Write Coding Articles and Share Knowledge.. How can I practice JavaScript online?25 Free Websites to Learn JavaScript. freeCodeCamp.org. ... . JavaScript 30. ... . CodeMentor. ... . Educative.io – Learn HTML, CSS, and JavaScript from Scratch. ... . Learn JavaScript - Full Course for Beginners from freeCodeCamp. ... . JavaScript.info. ... . Codecademy. ... . Sololearn.. How do I master JavaScript?What you'll learn. Understand core concepts of programming.. Understand JavaScript Programming language from the root.. Be confident to build web apps using jQuery.. Be confident to build web apps using React Js.. Get comfortable working with AJAX.. Learn JavaScript Programming from absolute scratch.. |