Coding and programming
JavaScript Advanced
Master closures, async patterns, ES6+ features and performance tuning. Build robust, professional-grade web applications.
Format
Live instructor-led
Hands-on, question-led sessions
Location
London NW10 or online
9 Station Terrace, NW10 5RT
Level
Advanced level
Small groups, hands-on, expert-led
Private / bespoke course
Select a date that suits you or your team.
Content fully customised. We'll quote based on group size, location, and any bespoke material you'd like covered.
Book as team training Reserve a date for me 020 8269 4260Invoice payment available · Prices subject to VAT
Who this course is for
This course is for experienced front-end developers and technical web professionals who already work with JavaScript and want to deepen their expertise in advanced concepts such as closures, asynchronous patterns, ES6+ features and performance optimisation to build more robust, professional-grade applications.
Prerequisites
You should have solid experience working with JavaScript fundamentals, including variables, functions, DOM manipulation and event handling, or have attended our JavaScript Introduction course.
What you'll learn
Exploring advanced JavaScript techniques and design patterns, enabling you to build robust, scalable web applications.
How to work with asynchronous JavaScript, Promises and AJAX, empowering you to handle complex interactions efficiently.
Understanding data structures, algorithms and DOM manipulation, helping you optimise code and improve application performance.
How to use frameworks and libraries like React or Angular, enabling you to develop sophisticated user interfaces and single-page applications.
Exploring testing, debugging and deployment strategies, helping you deliver high-quality, reliable web applications.
How to integrate with backend systems and APIs, enabling you to create full-stack solutions and connect to external data sources.
Understanding security best practices and performance optimisation, helping you build secure, fast and user-friendly web experiences.
Course outline
What you’ll cover
Mastering the Document Object Model (DOM)
- Exploring advanced DOM manipulation techniques
- Implementing cross-browser compatible solutions
- Utilising unobtrusive JavaScript for enhanced performance and maintainability
Using Cookies for Enhanced User Experience
- Implementing cookies for persistent data storage
- Creating and managing multiple cookies efficiently
- Exploring alternatives to cookies (localStorage, sessionStorage)
Optimising User Information Gathering
- Implementing browser detection and feature checking
- Utilising modern APIs for device information and capabilities
- Adapting content and functionality based on user environment
Better Web Interactivity with Dynamic HTML (DHTML)
- Integrating JavaScript with CSS for dynamic styling
- Implementing smooth animations and transitions
- Creating responsive layouts with JavaScript and CSS
Debugging and Performance Optimisation
- Mastering browser developer tools for efficient debugging
- Implementing error handling and logging strategies
- Optimising JavaScript performance through code profiling and analysis
Exploring Modern JavaScript Features
- Leveraging ES6+ syntax for cleaner, more efficient code
- Implementing async/await for improved asynchronous programming
- Utilising modules for better code organisation and reusability
Implementing Advanced Design Patterns
- Exploring and applying common JavaScript design patterns
- Implementing functional programming concepts in JavaScript
- Utilising object-oriented programming techniques effectively
Enhancing Security in JavaScript Applications
- Implementing best practices for secure coding
- Mitigating common security vulnerabilities (XSS, CSRF)
- Exploring modern authentication and authorisation techniques
Integrating with APIs and External Services
- Implementing RESTful API interactions using Fetch API
- Exploring GraphQL for flexible data querying
- Leveraging WebSockets for real-time communication
Optimising for Modern Web Development
- Implementing progressive web app (PWA) concepts
- Exploring serverless architecture with JavaScript
- Leveraging modern build tools and module bundlers (Webpack, Rollup)
Included
- Live expert-led instruction
- Practical exercises and workflow examples
- Live Q and A and troubleshooting with the trainer
- Follow-up support guidance
Frequently asked questions
Is this JavaScript Advanced course suitable for me?
This course is designed for people who have experience in JavaScript or have already attended one of our JavaScript training courses or who would like to further their knowledge of best practice in the use of JavaScript. If you are have any questions about whether the course could meet your needs, please speak to our customer service team. They will be delighted to advise you.
Will I receive a certificate upon completion of my JavaScript Advanced course?
Yes, you'll receive a certificate of completion from Transmedia, demonstrating your knowledge and attendance on our JavaScript Advanced course. Our certificates note our Authorised Training Centre status.
How is the content taught throughout the JavaScript Advanced course?
Our JavaScript Advanced course is extremely interactive. You will be using JavaScript throughout the day, working through examples and live projects under the guidance of our trainer, who will be supporting you through each step.
What is the recommended number of people for the class when I attend the JavaScript Advanced course?
For private classes in JavaScript Advanced, we recommend a maximum of 8 to 10 people from the same company in the class. Please ask our customer service team to help you find the right balance of people per class and the number of days training you need.
Should I attend the JavaScript Advanced course in person or live online?
For in-person courses at our London training centre, you will receive a warm personal welcome, your choice of the latest Mac or PC and morning and afternoon refreshments. If you prefer to attend remotely, rest assured that you will be taught live by the same experts that deliver our in-person courses, covering the same training content, using the same exercises and materials. A second monitor is recommended but not essential.
What support is available after I attend the JavaScript Advanced course?
We offer ongoing support to our JavaScript Advanced course attendees through email and by arrangement, phone calls. You are welcome to ask any questions on topics covered during training. Our trainer will always do their best to explain principles and help you with any issues you encounter.
Reviews
Gorgeous premises and lovely, knowledgeable team. I really enjoyed my course (Adobe Firefly) - the tutor was friendly and professional and happy to answer any questions and tailor the course (I was the only student so had my own private session). The class room and the whole building is really well done, modern, clean and professional space that reflects the overall approach. They have fast and modern machines available to use or you can use your own devices. Highly recommended.
Quadrotech — June 2026
Fantastic and super valuable training! Fantastic and super valuable training! Tony shaped the training fully to our needs, adapted, accelerated and deep diving when needed. I learned so much these past days with tangible examples Tony provided.
Adobe — June 2026
The trainer, Lee, was excellent. He rattled through the key elements of Premiere Pro while keeping the course interactive and engaging. The small sessions made it easy to get 1:1 support or clarifications. The pleasant and well equipped office is well situated in Kensal Rise, so easy to find and get to. I learnt a alot - and now feel up to date with latest Premiere Pro options and AI integrations.
UNICEF — June 2026
Hi Brook, Sorry for the delay - I was on AL yesterday! The training was great, thank you. Tony was very thorough with everything and I definitely left with some new knowledge and skills. I'll leave a review later today. Thanks for sending the materials across. Have a lovely rest of your day!
Live Union — June 2026
I wish all training courses were run this well!
RPS Design — June 2026
The Design and Development areas of Clarks shoes has been using Transmedia as a training partner for eight years now, mainly in the 'creative' Adobe applications - Photoshop, Illustrator, InDesign and Premiere. In that time we have built an excellent working relationship with the management and admin teams and several of their core trainers. This has had a major influence in raising the skill levels and quality of our artwork across our design teams- recently extending across the Atlantic, delivering training to our US based designers. Staying with Transmedia has given us continuity and enabled the trainers to really come to understand what Clarks require and thus able to deliver real value for money. The staff are always friendly and a pleasure to deal with - whilst being efficient and professional throughout. Nothing is ever too much trouble. I really can't recommend Transmedia highly enough.
Clarks International — June 2026
The course was excellent - exactly to my company's needs. All questions were answered and concepts explained very clearly.
Hannah Griffiths — June 2026
First class - The trainer was extremely knowledgeable and answered all our questions.
MOD — June 2026
The course itself was really informative and trainer was excellent. Poor communication and organisation between transmedia and QA meant my course was cancelled twice. I hope you improve this relationship. To be honest I would prefer to book direct through you next time, avoiding QA.
Deborah M — June 2026
The session on the 25th was brilliant, thank you. The SE's found it very useful and loved Tony's tips and tricks to help us update our prototypes quickly.
Salesforce — May 2026
I thought the course and the location were perfect
MOD — May 2026
Wonderful trainer Lisa - fun, friendly, informative and comprehensive course! Thank you very much indeed.
Structural Soils Ltd — May 2026
I have taken part in several Transmedia courses and will likely take part in a few more. From start booking to training Transmedia are brilliant to work with. Happy to answer all questions ahead of booking to help make sure you're on the right course (thank you Jo). The training itself is very thorough and the instructor, (Lee in my case) was happy to stop and go through any parts that were a struggle during the course.
Reach plc — May 2026
Very much appreciated and enjoyed the introductory course. It was very in-depth and Tony did a fantastic job of covering each individual section of Figma in great detail; no stone was left unturned. Tony is clearly passionate about what he does, which made the course that much more enjoyable and valuable. Looking forward to the advanced course next month - eager to continue learning more from him.
Wren Kitchens — May 2026
Very thorough course and enthusiastic trainer who was very helpful and responsive to individual needs.
NVIDIA — May 2026
I really enjoyed my course. Tony is a really good trainer and tailored the day according to my level and needs.
Delegate — May 2026
Great tutor well worth the money will definitely keeping in contact and very recommended
Workplace Options — May 2026
The trainer's knowledge was very strong and he was able to answer all my questions. Admin staff were very friendly and helpful.
VCCP — May 2026
Great course! Instructor went at a good pace and broke down complex functions into simple steps.
Adam W — May 2026
Very helpful, informative training. Relaxed atmosphere and felt very comfortable asking questions.
The White Company — May 2026
Need a bespoke course or group booking?
We train teams at their offices across London and the UK. Call us or email to discuss.