JavaScript Training - Mastering ES6+ for High-Performance Apps

$2,310

  • 2 days
  • Onsite
  • 10 people max.
Ref: VVY312
10 people max.
$2,310
In-company rate: from $4,190 for the whole team
On-site and certification exam on quote
2 days
Onsite

Don't let this gap widen

Why this program matters

  • Without advanced mastery of JavaScript ES6+, 68% of developers lose 20% of their time on asynchronous bugs, according to the Stack Overflow Survey 2023, resulting in slow apps that drive away 53% of mobile users in less than 3 seconds, according to Google.

  • In companies, this creates costly project delays, with up to 40% of budget lost on rewrites, and blocks promotions because 75% of fullstack job postings require ES6+.

  • Are you risking obsolescence against agile competitors?

  • Invest now to secure your expertise and boost team productivity.

Célian Lebacle, Learni trainer · Web & mobile expert
Célian Lebacle

Learni trainer · Web & mobile expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

41,134 programs · 25 countries

  • Aptar
  • ArcelorMittal
  • Equans
  • EDF
  • Ubisoft
  • Microsoft
  • Atos

Every program built with a dedicated engineer

  • OpenAI
  • Anthropic
  • Mistral AI
  • NVIDIA
  • Google
  • Amazon Web Services
  • Microsoft Dynamics 365
  • Salesforce
  • ServiceNow
  • SAP
  • Oracle
  • Cisco
  • Fortinet
  • Palo Alto Networks
  • Aruba
  • VMware
  • Red Hat
  • Databricks
  • Snowflake
  • OVHcloud
  • Notion
  • AMD
  • Apple

Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft, Microsoft and Atos.

JavaScript training objectives

  • Master ES6+ features to boost your professional skills in certified training
  • Develop robust asynchronous code with Promises and async/await in an enterprise context
  • Implement ES6 modules for scalable and maintainable architecture
  • Optimize JavaScript performance using closures, prototypes, and debugging tools
  • Design reactive applications tailored to business needs
  • Integrate advanced practices for rapid upskilling and certification

Program

JavaScript curriculum: 2 modules over 2 days

Module 1 : JavaScript ES6+: Modern Syntax and Advanced Structures (Arrow Functions, Destructuring, Modules)

Discover arrow functions, destructuring, and template literals to simplify your daily code, apply them through practical exercises on real enterprise cases, build ES6 modules with import/export to modularize a complete web application, test live with Node.js and browser, receive immediate trainer feedback, produce a first optimized functional deliverable, integrate classes and inheritance for powerful objects, all in 7 dynamic and interactive hours.

Module 2 : Asynchronous JavaScript and Performance: Promises, async/await, Optimization (Debug Tools, Prototypes)

Dive into Promises and async/await to handle API calls without blocking the interface, simulate real fetches with JSONPlaceholder, debug with Chrome DevTools and advanced console, optimize using closures and prototypes for smooth apps, measure performance gains on benchmarks, implement robust error handling, finalize a deployable personal project, receive pro tips for enterprise use, consolidate knowledge in 7 hours with quizzes and collaborative challenges, obtain resources for post-training practice.

How JavaScript skills are assessed

  • Interactive quizzes at the end of each module to validate ES6+ knowledge
  • Practical case studies with personalized feedback
  • Final asynchronous project evaluated by certified experts

How the JavaScript course is taught

  • Active pedagogy with 70% hands-on practice on real code
  • Hands-on exercises in a shared remote environment
  • Real cases drawn from enterprise projects
  • Video support and unlimited post-training resources

JavaScript training: access and practical arrangements

The JavaScript Training - Mastering ES6+ for High-Performance Apps program is delivered onsite or remote (blended-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 JavaScript Training - Mastering ES6+ for High-Performance 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 JavaScript Training - Mastering ES6+ for High-Performance 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

Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.

The Learni story

Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.

Our method

How Learni guarantees the quality of your JavaScript training

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.

A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training booked

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.

  • Backpack, notebooks and essential supplies
  • Distributed through our partner charities
  • Included, at no extra cost to you
Enroll and offer a kit
FAQ

JavaScript: frequently asked questions

Which tools are used in JavaScript Training training?+
Hands-on work runs on arrow Functions, destructuring, modules, debug Tools and prototypes. Those tools come from the JavaScript Training program itself, delivered on site over 2 days, so participants practise on the stack they will use at work.
What can participants do after JavaScript Training training?+
They can master ES6+ features to boost your professional skills in certified training, develop robust asynchronous code with Promises and async/await in an enterprise context and implement ES6 modules for scalable and maintainable architecture. Those are the stated objectives of the JavaScript Training program at Intermediate level, checked by the end-of-session assessment.
What does the JavaScript Training program cover, day by day?+
Day 1: JavaScript ES6+: Modern Syntax and Advanced Structures (Arrow Functions, Destructuring, Modules). Day 2: Asynchronous JavaScript and Performance: Promises, async/await, Optimization (Debug Tools, Prototypes). The JavaScript Training program runs over 2 days, delivered on site.
How is JavaScript Training training assessed?+
Assessment relies on interactive quizzes at the end of each module to validate ES6+ knowledge, practical case studies with personalized feedback and final asynchronous project evaluated by certified experts. Learni issues a completion certificate together with the individual assessment report at the end of the JavaScript Training program, which an L&D team can file as evidence.
How much does JavaScript Training training cost per participant?+
JavaScript Training training costs $2,310 per participant. For an in-company team, the flat rate starts at $4,190 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does JavaScript Training training take?+
2 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for JavaScript Training training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before JavaScript Training training?+
Basic knowledge of JavaScript ES5 (variables, functions, loops, DOM), practical experience with HTML/CSS, and a Node.js or browser environment.
Is a certificate issued after JavaScript Training training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for JavaScript Training training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
Your professional training, anywhere

Let's build your JavaScript learning path.

30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.

Reply within 24h · Vetted experts · USD invoicing · W-9 available
On-site & remote

JavaScript training in your city

Available on-site and remotely. Pick your city to see the local training center.

Share in 2 clicks