JavaScript Practice Exercises


Welcome to our comprehensive collection of JavaScript practice exercises. Our exercises are designed to help you master the JavaScript programming language and build your skills as a web developer. Whether you’re a beginner just starting out or an experienced developer looking to brush up on your skills, our exercises will provide you with the knowledge and hands-on experience you need to succeed. Each exercise includes detailed explanations and sample code to help you understand the concepts and techniques involved. With our exercises, you’ll be able to create dynamic and interactive user interfaces, work with APIs and libraries, and become proficient in modern JavaScript frameworks such as React and Angular. Start practicing today and take your JavaScript skills to the next level!

JavaScript Basic Exercises

Here are some basic JavaScript exercises to get you started:

  1. Hello World: Write a program to print “Hello, World!” to the console.
  2. Variables: Declare and initialize different data types such as numbers, strings, and booleans. Print the values to the console.
  3. Arithmetic: Write a program to perform basic arithmetic operations such as addition, subtraction, multiplication, and division.
  4. Conditional Statements: Write a program to use if-else statements to check if a number is positive, negative, or zero.
  5. Loops: Write a program to use for loops and while loops to print the numbers from 1 to 10, and to calculate the sum of numbers from 1 to 100.
  6. Arrays: Create and manipulate arrays, and perform operations such as sorting and searching.
  7. Functions: Write a function to calculate the factorial of a number, and to find the largest and smallest numbers in an array.
  8. Objects: Create and manipulate objects, and demonstrate the use of properties and methods.
  9. DOM Manipulation: Use JavaScript to manipulate the Document Object Model (DOM) of a web page, and to perform tasks such as changing the text of an element, adding a new element, and removing an element.
  10. Event Handling: Use JavaScript to handle events, such as clicks, mouse movements, and keyboard inputs, and to respond to these events with appropriate actions.

These exercises will help you build a foundation in JavaScript programming, and prepare you for more complex web development tasks.

JavaScript Advance Exercises

Here are some advanced JavaScript exercises to challenge your skills:

  1. Closures: Write a program to demonstrate the use of closures and to create functions that return functions.
  2. Prototype-based Inheritance: Use JavaScript’s prototype-based inheritance to create and inherit objects, and to create class-like structures.
  3. Async Programming: Use JavaScript’s async/await and Promises to perform asynchronous operations, and to handle errors and timeouts.
  4. ES6 Features: Use modern JavaScript features such as arrow functions, destructuring, spread operator, and template literals.
  5. Modules: Write programs that use CommonJS or ECMAScript modules to export and import functions and objects.
  6. Web Components: Use the Custom Elements API to create reusable and self-contained web components, and to use these components in web pages.
  7. React: Use React to build dynamic user interfaces, and to perform tasks such as rendering components, handling events, and updating the state.
  8. Node.js: Use Node.js to build server-side applications, and to perform tasks such as processing HTTP requests, reading and writing to the file system, and accessing databases.
  9. Webpack: Use Webpack to bundle and optimize JavaScript and other web assets, and to create development and production builds.
  10. Testing: Use JavaScript testing frameworks such as Jest, Mocha, and Chai to write and run unit tests, integration tests, and end-to-end tests for JavaScript applications.

These exercises will help you gain a deeper understanding of JavaScript programming and web development, and prepare you for complex and challenging projects.


  • Barry Allen

    A Full Stack Developer with 10+ years of experience in different domain including SAP, Blockchain, AI and Web Development.


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