JavaScript Practice Exercises for All Levels

Every other thing that occurs when the user is on that page is also an event. For instance, when the user clicks a button, closes a window, or presses any key. This exercise teaches you how to create a button that triggers a response when someone clicks on it. That’s why we’ve developed a separate flashcards app where you can reinforce the new concepts that you learned using spaced repetition. Multi-step final project teaching you how to build a food tracker from scratch.

Every exercise has a brief description of the problem, starting code, links to relevant MDN docs, and expected results. Try to solve the problems without taking a peek at the solution. It uses a single variable to store multiple elements or values at once. It is best used when you have a list of elements that you want to access easily with a single variable. This exercise includes writing a JavaScript function to determine if an “input” is an array or not.

Best Angular Tutorials for Beginners

Spaced repetition has been proven to be a more effective learning method. Given the necessary CSS code, you’re asked to write the code that opens and closes the sidebar of a web page. Read short lessons, take notes, and complete challenges directly in your browser. Program to find the index of a search element in an array using the binary search algorithm.

The lessons & challenges will guide you through these topics step by step and its project-based approach will help you reinforce these concepts. 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. JavaScript Web Projects on Udemy is one of the best courses for building real-life projects 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. You can use it for front-end web development to create stunning website interfaces, but also for backend coding using Node.js.

XML Tutorials

It’s really hard to test your programming knowledge after you have completed a tutorial or a lecture. We have prepared some exercises to help out beginner devs to solidify their understanding of the DOM.

• Their free Intro to JavaScript course teaches you JS from the ground up, even if you are completely new to tech.
• Change the text in the first and the last list item element in every unordered list element on this page.
• JS events happen when a user or browser manipulates a page and the page loads.
• If you are new to coding, I recommend starting with free resources to get a hang of how JavaScript works.
• This exercise is an introduction to JavaScript through simple scripts to help you understand how JavaScript works and what you can do with the program.
• A resource with 47 exercises to practice whatever your level is, With exercises from well-known universities.

We have gathered a variety of JavaScript exercises for each JavaScript Chapter. Let us know in the comments how it went if you’ve tried any of the exercises. It’s highly interactive, however, you need a subscription in order to have access to the whole course.

Write a JS code to count all letters in a word

Function `printEven()` prints all the even numbers of a 2D array using for loops and ‘%’ operator. For my proven learning strategy, check out the best way to learn JavaScript from scratch. We all have different learning styles, and it’s important that you find out how you learn best.

There are numerous websites online that offer quizzes on JavaScript. You can take these tests to learn and practice your JS skills. You can track your progress to determine how much you’ve learned and still need to learn. Some websites that can help are W3Schools, Skillvalue, and Code Conquest. In JavaScript, an operator can be used to compare values, perform arithmetic operations, or manipulate a specific value. In a JS operators exercise, you will learn to multiply and divide data values, alert results, alert remainders, and use assignment operators. This exercise involves learning to add up data values and use variables better.