course
JavaScript Development Advanced
Improve your JavaScript skills with advanced language features and techniques
Description
Deze training borduurt voort op onze training JavaScript Development Core. Waar we in die training aandacht besteden aan kernvaardigheden voor het werken met JavaScript, gaan we in deze training een stap verder door te focussen op geavanceerdere taalfeatures en technieken. Deze kennis en vaardigheden komen sterk van pas nu steeds meer projecten de kracht van "vanilla JavaScript" maximaal willen benutten. Ook op projecten waar met React, Svelte, TypeScript of testframeworks als Cypress en Playwright wordt gewerkt komen geavanceerde technieken van pas bij het structureren van code.
Je leert in deze training over het geavanceerd gebruik van functies met arrow functions en closures, het geavanceerd gebruik van objecten met encapsulatie en proxies, wat JavaScript's inheritance-mechanisme voor je kan betekenen, wanneer Symbols van pas komen, wat Sets en Maps voor voordeel bieden, hoe iterators en generators interessante perspectieven bieden voor loops en tenslotte alles over het wrappen van asynchroon werk met Promises.
Deze training richt zich op ontwikkelaars die al een goede basis van JavaScript hebben en deze willen aanvullen om het in te zetten in een professionele omgeving. Kennis van C#, Java of C++ komt ook van pas.
Learning Goals
This training covers the following learning goals:
 Describe different types of functions in JavaScript, including function declarations, function expressions, arrow functions, IIFE and constructor functions, and their appropriate use cases to write clearer and more efficient code. | Understand  |
Recognize the challenges of working with this inside a JavaScript application. | Remember  |
| Explain the concept of prototypes and how prototypal inheritance allows for efficient object-oriented programming in JavaScript. | Understand |
Express the reason for using Symbols and apply them to override features in the JavaScript runtime. | Apply  |
| Differentiate between Sets and Maps to choose the appropriate data structure for managing collections of unique values and key-value pairs. | Analyze  |
| Explain the iterator pattern and describe the role of generator functions in creating iterable sequences in JavaScript. | Analyze |
| Explain the benefits of using Promises and async/await for handling asynchronous operations in JavaScript. | Understand |
Prior Knowledge
Fundamentals of working with JavaScript. Knowledge of C#, Java or C++ comes in handy.
Subjects
Advanced functions
In this module, you will learn about the advanced use of functions
Lessons
- Function properties
- Constructor functions
- The mystery of
thisunveiled - Arrow functions
- IIFE's
- Closures
- Template literals
Lab: Advanced functions
After completing this module, students will be able to:
- Determine when to use a function and when to use an arrow function
- Reason about the value of
this - Utilize the advantages of arrow functions
- Understand libraries better an appropriate situation presents itself
Prototypes
In this module, you will learn what prototypes are and how you can apply them
Lessons
- Prototypes
- Prototype chain
- Set/change the prototype
- Inheritance
super
Lab: Prototypes
After completing this module, students will be able to:
- Understand how prototypes work in JavaScript
- Use prototypes for inheritance of writing extension methods
- Understand how classes relate to prototypes
Symbols
In this module, you will learn about Symbols: a value-type to uniquely address something
Lessons
- Symbols
- The value type
- Built-in symbols and the symbol registry
- Symbols and properties
- Libraries and symbols
Lab: Symbols
After completing this module, students will be able to:
- Use and write symbols
- Influence JavaScript's conversions using
Symbol.toPrimitive()
Sets and maps
In this module, you will learn about the built-in types Set and Map
Lessons
SetenMap- Their weaker counterparts,
WeakSetenWeakMap
Lab: Sets en Maps
After completing this module, students will be able to:
- Use
SetandMapwhen an appropriate situation presents itself
Iterators and generators
In this module, you will learn about iterating using iterators and generators
Lessons
- Iterators,
Symbol.iterator()and the Iterator pattern - Generators and
yield
Lab: Iterators and generators
After completing this module, students will be able to:
- Use iterators en generators
- Implement the iterator pattern
- Create a generator
Advanced objects
In this module, you will learn using objects in an advanced manner
Lessons
- Static functions on objects:
Object.is(),Object.assign(),Object.keys()and more ProxyReflect- Encapsulation
- Garbage collection
Lab: Advanced objects
After completing this module, students will be able to:
- Use certain static functions when an appropriate situation presents itself
- Use
Proxyto trap interactions - Use
Reflectfor reflection-like functions - Shield functions/properties in various ways from other bits of code
- Hook into the event of an object being garbage collected by the JavaScript-engine
Promises
In this module, you will learn about performing asynchronous work using promises
Lessons
- Creating and using promises
- Promise chaining
- Error handling
- Returning values
- Static functions like
Promise.all(),Promise.allSettled()and more - Useful techniques
async/await
Lab: Asynchronously read the contents of multiple files
After completing this module, students will be able to:
- Create and use promises
- Implement error handling and chaining
- Deal with parallel promises
- Use
async/awaitto improve readability
Schedule
| Start date | Duration | Location | |
|---|---|---|---|
February 17, 2025February 18, 2025 | 2 days | Veenendaal / Remote This is a hybrid training and can be followed remotely. More information Veenendaal / Remote This is a hybrid training and can be followed remotely. More information | Sign up |
March 17, 2025March 18, 2025 | 2 days | Veenendaal / Remote This is a hybrid training and can be followed remotely. More information Veenendaal / Remote This is a hybrid training and can be followed remotely. More information | Sign up |
April 7, 2025April 8, 2025 | 2 days | Veenendaal / Remote This is a hybrid training and can be followed remotely. More information Veenendaal / Remote This is a hybrid training and can be followed remotely. More information | Sign up |
May 1, 2025May 2, 2025 | 2 days | Utrecht / Remote This is a hybrid training and can be followed remotely. More information Utrecht / Remote This is a hybrid training and can be followed remotely. More information | Sign up |
All courses can also be conducted within your organization as customized or incompany training.
Our training advisors are happy to help you provide personal advice or find Incompany training within your organization.
Trainers
Prior knowledge courses
"Very pleasant teacher, gave a very good interpretation of the course in their own way. It was nice to follow the course like that."Marieke
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