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Training JavaScript Advanced - Master ES6+ and Scalable Apps

Ref: GKR490
10 people max.
5250 € HT / per person
−15% from 2 people−30% from 3 people−50% from 5 people
Pay in 3 installments · +$170/day onsite · +$500 with certification exam
5 journées
distanciel

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Learning objectives

  • Master ES6+ features like arrow functions and destructuring.
  • Implement asynchronous programming with async/await and Promises.
  • Optimize performance via closures, prototypes, and modules.
  • Develop scalable applications with Web Workers and Service Workers.
  • Integrate advanced patterns for robust and maintainable code.
  • Build and deploy real projects with tools like Webpack and Babel.
  • Analyze and debug complex code in production.

The Learni story

Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.

Don't let this gap widen

Why this program matters

  • Without this advanced training, risk obsolescence: 70% of JS devs stagnate on ES5, losing 25% of freelance projects according to Stack Overflow.

  • Your slow apps generate 40% user drop-offs, costing thousands in churn.

  • Competitors mastering async/await secure +30% salaries (average 65k€/year).

  • Avoid critical production bugs, like 60% unmanaged memory leaks.

  • Miss internal promotions without advanced prototypes.

  • Invest 35h to double productivity, secure your career, and dominate the exploding JS market (+22% job offers 2024).

Allan Busi
Allan Busi

Learni Trainer · Expert

73%productivity gap
×3cost of inaction

Program

Module 1ES6+ and Modern Syntax: Master New Features (arrows, classes, modules)

Dive into ES6+ by refactoring legacy code with destructuring, spread operators, and template literals. Complete practical exercises on classes and inheritance. Build a functional import/export module. Test live with Babel to transform your development approach and gain immediate productivity on real refactoring cases.

Module 2Asynchronous Programming: Promises, async/await, and Error Handling

Deepen asynchronous programming by chaining Promises for multiple API calls. Implement async/await in real scenarios like fetching from remote endpoints. Handle rejections with try/catch. Simulate network latencies through interactive exercises. Produce a robust script for a dynamic dashboard, transforming your apps into smooth, reactive experiences.

Module 3Advanced Concepts: Closures, Prototypes, and Object Patterns

Explore closures for secure private modules. Manipulate prototypal inheritance for performant objects. Apply patterns like Observer and Singleton to enterprise cases. Code collaborative exercises in pair programming. Generate testable deliverables with Jest. Unlock JavaScript's hidden potential for elegant architectures.

Module 4Performance and Optimization: Web APIs, Workers, and Memory

Optimize with Web Workers for CPU-intensive tasks. Integrate Service Workers for offline-first PWAs. Profile memory via Chrome DevTools on real apps. Reduce memory leaks through targeted exercises. Benchmark before/after with Lighthouse. Deploy measurable gains up to 40% faster, propelling your projects to technical excellence.

Module 5Integrative Projects and Best Practices: Deployment and CI/CD

Build a fullstack app with Node.js and bundlers like Webpack. Integrate CI/CD via GitHub Actions. Review security and scalability best practices. Present your project in a final pitch. Receive personalized feedback. Leave with a concrete portfolio and certificate to boost your career immediately.

Evaluation method

  • Continuous assessment through interactive quizzes, graded final project, self-assessment of skills before/after.

Learning method

  • Active pedagogy with 70% hands-on practice, small group workshops, personalized video feedback.

Methods, materials and delivery

The Training JavaScript Advanced - Master ES6+ and Scalable Apps program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training JavaScript Advanced - Master ES6+ and Scalable Apps program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training JavaScript Advanced - Master ES6+ and Scalable Apps program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.

Verified reviews

What our learners

4.9 · +100 verified reviews
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
Read all reviews
Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

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