JavaScript React Developer

Create website interfaces, styles, and animations like the ones you know and use everyday.

Training period
12 months full time
Training duration
800 hours supervised

A flexible online program

Imagine starting a brand-new career at any time! Can’t commit to full-time? No problem, study at your own pace.

Real-world projects

Acquire the most relevant skills by completing 14 projects based on those required in your future career.

Individual learning support

Benefit from weekly mentoring sessions with an expert in the field.

OpenClassrooms Certification

Leave with a professional qualification and benefit from our hired or refunded guarantee.*
DevelopmentJavaScript React Developer
OpenClassrooms Certification
Training period
12 months full time
Training duration
800 hours supervised

What is the JavaScript React Developer role?

JavaScript React developers, also known as front-end developers, are in charge of creating dynamic websites using a programming language. They take care of the front-end part, i.e. the visual side of the site, unlike the back-end developer. To find out more, you can read this article on developer jobs.


A front-end developer’s missions typically entails:

  • Understanding the project they’re working on to develop the most satisfying features and interfaces for their client.
  • Implementing mockups with a keen eye for detail and rigorous standards.
  • Using best practices to structure HTML, CSS and Javascript code.
  • Using frameworks such as React to build powerful and modular applications.
  • Using tests to monitor their applications and ensure the highest quality service.
  • Providing technical and functional documentation of the site for their clients and colleagues.
  • Optimizing page load time.

Why take this program?

This program was created by our instructional design team. Our pedagogical method is based on the realization of real-world projects and one-on-one, weekly sessions with a professional web development expert as your mentor.

The idea is simple: to learn effectively, it is important to be active in your learning. Within this path, this involves completing projects based on scenarios from the professional world. Your mission: look for solutions, create your deliverables and present them convincingly in front of your mentor! You will be able to directly apply the experience you gain through your OpenClassrooms program in your future workplace.

The training consists of professional projects of increasing complexity. Each project will allow you to acquire specific skills.

What you will learn

  • Setup your development environment.
  • Implement a responsive layout with HTML5 and CSS3.
  • Ensure the accessibility of a website.
  • Create dynamic web applications with Javascript, React and APIs.
  • Ensure data quality in a web application through testing.
  • Contribute to a code project using agile methodology...

... And much more!

At the end of this training, you will be delivered the JavaScript React Developer OpenClassrooms certification.

Salary of a Front-End Developer

Web development can be a lucrative career with many prospects and income growth opportunities opening up as you continue to acquire more experience. Here is what you can expect to earn in your career as a Front-End Web Developer:

United Kingdom

  • Beginner: £30,000 - £40,000 
  • 2-5 years: £40,000 - £60,000
  • 5+ years: £60,000 +

United States

  • Beginner: $40,000 - $60,000
  • 2-5 years: $60,000 - $80,000
  • 5+ years: $100,000 +

You will be able to work as a React Developer or Front-End Developer, but also as a Web Developer, or Javascript Developer.

This program can be taken as part of an apprenticeship. For more information, please contact us.

Career development

You will also be able to quickly ascend towards other developer jobs using Javascript as your primary programming language. For example, you could become a mobile developer using React Native or a Back-End Developer with Node.js.

As a JavaScript developer, you will be able to evolve in several ways, including :

  • Diversifying your technical skills to become a full-stack developer, i.e. covering both the back end and the front end.
  • By specializing in a particular technology; React in this training but there are plenty of others!
  • After a few years of experience and collaborating with many other developers, you may also choose a more managerial role as a Lead Developer or a CTO.


You will need to provide a certificate not older than 2 years to demonstrate a minimum level of English B2.

Certificates accepted:

  • English Diploma from a secondary institution (private or public) or an accredited higher learning institution
  • Linguaskill minimum score: 160
  • BULATS minimum score: 60
  • TOEIC minimum score: 785
  • IELTS minimum score: 6.5
  • TOEFL iBT minimum score: 88
  • Cambridge FCE / CAE / BEC HIGHER / BEC VANTAGE minimum score or grade: B or 160
  • Certificate from a language center demonstrating a minimum level of B2 (including the number of training hours completed and the company signature or stamp)

Don’t have one of these certificates? Find out where to take an exam.

To be eligible to earn this path's diploma, candidates must demonstrate proof of one of the following prerequisites:

  • an associate's degree, or equivalent, in computer science, web development, or software development
  • or a high school/secondary school degree, vocational certificate, or equivalent, and at least 2 years of professional experience in IT, web development, or software development

All other candidates will need to go through a specific admissions process. These candidates must have:

  • Equipment: Candidates must also have access to a computer (PC or Mac), headphones, a microphone, a webcam, and a good internet connection for mentoring sessions (3.2 Mbps upload and 1.8 Mbps for download). In addition, to master the skills on this path, you will need to:
    • Have at least 8 GB of RAM (16 GB is more comfortable) and 100 GB of storage space available on your computer.
    • Have administrator rights to your computer in order to install required programs.

How will I learn at OpenClassrooms?

Our learning method is unique and revolves around two elements: professional projects and dedicated mentoring sessions.


At OpenClassrooms, learning is project-driven because that’s the fastest way to become proficient. Projects offer hands-on experience so you can hit the ground running when you start your new job.  

The JavaScript React Developer path has a series of projects that you’ll need to complete one at a time with the support of your mentor. You’ll receive a detailed brief with the context, customer requirements and additional details. Then it’s up to you to go and make it real! To do this, you’ll have to be creative, coming up with innovative solutions to the questions at hand.

Want to know more about projects? Read our blog post here.


During your path, you will be assigned a mentor who will offer one-to-one support via weekly video conference sessions. This mentor will offer guidance on your projects, help define objectives and guide you until you reach them. Our mentors are dedicated professionals who are experts in their field and have experience in sharing their know-how with our students.

Your diploma

  • OpenClassrooms is an online training educational establishment, declared as such by the French authority ‘le rectorat de l'Académie de Paris’.
  • Once you’ve completed your training program, and subject to validating your skills, you will receive the OpenClassrooms standard diploma "JavaScript React Developer".

Hired or refunded guarantee

  • You find a job in the 6 months following the date of validation of your last path project.
  • Otherwise, we guarantee the reimbursement of your tuition.*
    See more details
DevelopmentJavaScript React Developer
OpenClassrooms Certification
Training period
12 months full time
Training duration
800 hours supervised

A teaching method based on practical experience.

  • Acquire key skills for your future career with real-world projects.
  • Make progress with the support of an experienced professional.
  • Acquire concrete know-how and demonstrate it with a portfolio.

Detailed projects and skills

project 1

Take Ownership of Your Learning on the Front-End Path

In our changing world, being skilled in learning is more important than ever. Become an active, autonomous learner to set yourself up for success on this path and in your future career.
8 hours supervised
Skills acquired in this project
  • Set up a technology monitoring dashboard
  • Create a training plan
project 2

Turn Mock-ups Into a Web Page with HTML & CSS

Get started with HTML & CSS by implementing a travel booking platform's website from scratch.
70 hours supervised
Skills acquired in this project
  • Integrate web content according to a mockup using HTML & CSS
  • Implement a responsive layout
project 3

Integrate a mobile website with animations in CSS

Implement the mobile version of this foodtech website with CSS animations.
90 hours supervised
Skills acquired in this project
  • Develop a navigation structure for a website
  • Implement design effects using CSS & Sass
  • Ensure design consistency on a website
  • Set up a development environment
  • Track a code project with version control on GitHub
project 4

Build a Landing Page Using Javascript

Get started with Javascript on this gaming company's website, GameOn. In this first programming project, you'll discover how to code from scratch with Javascript.
30 hours supervised
Skills acquired in this project
  • Program using fundamentals of JavaScript
project 5

Skills Checkpoint: Web Languages Proficiency

Test your skills on HTML, CSS and JavaScript language principles and paradigms;
1 hour
Skills acquired in this project
  • Write HTML, CSS and JavaScript syntax
project 6

Create an Accessible Website For a Freelancer Sourcing Platform

Delve into Javascript with Fisheye to build this freelance photographer platform. Be sure your code makes this web app accessible to all.
70 hours supervised
Skills acquired in this project
  • Manage website events
  • Write maintainable JavaScript code
  • Develop a modular app with design patterns
  • Ensure the accessibility of a website
project 7

Develop a Search Tool with a Front-End Framework

Implement a search algorithm for Les Petits Plats, a recipe website. You will use a Front-end framework to build the interface and advanced Javascript methods and tools for optimization.
90 hours supervised
Skills acquired in this project
  • Develop an algorithm to solve a problem
  • Deconstruct a computational problem
project 8

Skills Checkpoint: JavaScript Algorithms

Test your skills in Javascript algorithms to be ready for technical tests.
1 hour
Skills acquired in this project
  • Write Javascript syntax using a programming paradigm
project 9

Debug and Test an HR SaaS

The expense report app, Billed, is experiencing a handful of bugs. You'll have to fix as well as write new unit and integration tests to detect future problems.
60 hours supervised
Skills acquired in this project
  • Debug a web application
  • Write unit tests with JavaScript
  • Write a manual E2E test plan
  • Write integration tests with JavaScript
project 10

Define User Needs for a Tutoring App

A non-profit that tutors children needs your help. Determine their needs and create a plan to tackle them using agile tools such as, User Stories, mock-ups, a Kanban table and use case diagrams.
50 hours supervised
Skills acquired in this project
  • Manage a code project using agile methodology
  • Model a technical solution for a client using domain models
  • Identify functional application requirements based on client needs
  • Create a mockup for a client
project 11

Develop a Web App with React and React Router

Implement the front end of Kasa, a person-to-person, real estate rental app. For this client, you will create components with React and build the routes of your app with React Router.
60 hours supervised
Skills acquired in this project
  • Create React components
  • Develop the routes of an application with React Router
  • Initialize a React web app
project 12

Develop a Dashboard for Analytics with React

Create the consumer-facing dashboard of a sports analytics platform, SportSee. Build graphs and charts with React and use an API to fetch data.
60 hours supervised
Skills acquired in this project
  • Produce technical documentation for a web application
  • Develop advanced graphics using libraries
  • Ensure data quality in a web application
  • Interact with a web service
project 13

Connect to a Back End with an API Using React

Remede Agency needs you to complete their website's code to communicate with the back end. You'll write REST API calls to connect the front end to the back end of the website and model new API endpoints.
100 hours supervised
Skills acquired in this project
  • Interact with an API
  • Authenticate to a secure API
  • Create API models
  • Implement a state management system in a React app
project 14

Convert a jQuery Library to React

Help refactor HRnet's website. You will choose a jQuery library and turn it into a React plugin. Use LightHouse to monitor the performance of your new code.
110 hours supervised
Skills acquired in this project
  • Monitor the performance of a web app
  • Code in JavaScript with functional programming
  • Deploy a front-end web app
  • Refactor an application to reduce technical debt

One-to-one learning support

  • Benefit from weekly individual mentoring sessions with an expert in the field.
  • Progress rapidly through projects thanks to their expertise in sharing know-how.

The OpenClassrooms community

  • Count on our solid student community to give you support 24-7.
  • Share your doubts or queries with a comprehensive network of students, mentors, and graduates.

How exactly will I learn on an OpenClassrooms path?

From choosing what to study to starting their new career, our students describe their experiences and the support they received at every step of the way.

See step-by-step experience

Pay for your path

Monthly subscription: The flexible, customizable option

For everyone.

  • Flexible start date and study schedule

  • Non-binding subscription: Stop at any time

  • The faster you finish, the less it costs

  • Hired or refunded guarantee*

€480 per month

for an estimated duration of 12 months amounting to €5,760.

Enroll now

This training program requires an estimated time commitment of 1600 hours, including 800 hours supervised.

The total training duration consists of:

  • 800 hours supervised with projects, coached by mentors
  • 800 hours guided with courses and educational resources

The training period can be extended in the case of part time training.
The average duration is estimated and depends on your entry level into training, the time allocated per week, your availability, your capacity, and learning pace.

Interested in this path for your company?

Get a quote or a demo

*Subject to the conditions set out in the Terms of Service

Training program last updated on Jul 3, 2024