Intermediate JavaScript - 2 days Online Classroom

Intermediate JavaScript - 2 days Online Classroom

Take your JavaScript skills to the next level with this Intermediate JavaScript course. Designed for developers with a basic understanding of JavaScript, this hands-on training explores modern language features, asynchronous programming, object-oriented concepts, modules, and advanced coding techniques used in real-world web applications.

Through practical exercises, you'll learn how to write cleaner, more efficient, and maintainable code using ES6+ features, manage asynchronous operations with promises and async/await, work with objects and classes, handle errors effectively, and organize code into reusable modules.

By the end of the course, you'll have the confidence to develop more sophisticated JavaScript applications and prepare for advanced front-end frameworks and full-stack development.

Key Features

• Course and material in english
• Intermediate level
• 2 days of live instructor-led virtual training (8 hours / day)
• Hands-on practical exercises
• Course workbook and digital materials
• Interactive problem-solving
• 30+ recommended study hours
• Certificate included

Learning Outcomes

• Asynchronous JavaScript: Master asynchronous programming with callbacks, Promises, async/await, and the event loop. Build responsive applications that efficiently handle data and background tasks.
• Modules & Application Development: Organise code using JavaScript modules, package managers, and build tools. Explore TypeScript fundamentals and modern workflows for scalable application development.
• Testing JavaScript Applications: Learn unit, integration, and end-to-end testing, including techniques for testing asynchronous code to improve reliability and code quality.
• Advanced JavaScript Patterns: Apply object-oriented, functional, and asynchronous programming patterns to build clean, maintainable, and production-ready JavaScript applications.

Target Audience

• JavaScript developers with foundational programming experience
• Front-end developers looking to strengthen their JavaScript skills
• Full-stack developers working with modern web applications
• Web developers preparing to learn frameworks such as React, Angular, or Vue
• Software engineers seeking to write cleaner and more maintainable JavaScript code

Prerequisites

• A basic understanding of JavaScript syntax and programming concepts
• Familiarity with HTML and CSS
• Experience writing simple JavaScript applications
• Basic knowledge of the browser and developer tools is recommended

Course Outline

Day 1: Modern JavaScript Fundamentals

• Explore modern JavaScript syntax, operators, and data structures
• Understand scope, closures, and execution context
• Apply object-oriented programming with classes, inheritance, and encapsulation
• Use functional programming concepts such as pure functions and higher-order functions
• Work with arrays and modern JavaScript features to write cleaner code

Day 2: Asynchronous JavaScript & Development Tools

• Build asynchronous applications using Promises, async/await, and the Event Loop
• Organize applications with JavaScript modules and TypeScript
• Manage projects using modern development tools, bundlers, and package managers
• Test applications with unit, integration, and end-to-end testing
• Develop reliable, maintainable, and production-ready JavaScript applications

FAQ

When is the class held?

The majority of the class is a full-day online course from morning to afternoon CET with 8 hours / day straight. However, please contact us to confirm the final detailed schedules.

Who should take this course?

This course is designed for developers who already understand JavaScript fundamentals and want to advance their skills with modern development techniques.

Do I need prior JavaScript experience?

Yes. Participants should already be comfortable with basic JavaScript syntax, variables, functions, loops, and conditional statements.

How does the course cover object-oriented and functional programming?

You'll learn how to apply both programming approaches in JavaScript. Explore OOP concepts such as classes and inheritance, alongside functional techniques like pure functions, immutability, and higher-order functions to write cleaner, more maintainable code.

Will I learn ES6+ features?

Yes. The course covers modern JavaScript syntax and features commonly used in today's web development projects.

Will I learn asynchronous JavaScript?

Yes. The course covers the event loop, callbacks, Promises, and async/await, helping you build responsive applications that handle API calls, background tasks, and concurrent operations efficiently.

How is testing covered in the course?

You'll learn essential testing practices including unit, integration, and end-to-end testing, as well as techniques for testing asynchronous code and using mocks to create reliable, maintainable applications.

Will this course help me prepare for React, Angular, or Vue?

Yes. A solid understanding of intermediate JavaScript concepts is an essential foundation before learning modern JavaScript frameworks.

Is the course practical?

Yes. The training includes hands-on coding exercises and real-world examples to help you apply intermediate JavaScript concepts with confidence.