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Programming and Software Development
JavaScript Deep Dive
Understand how JavaScript really works, from coercion and closures to the event loop and modules, and use it to write reliable code.
About this course
Go beyond copy-paste JavaScript. Understand closures, the event loop, async patterns and modern ES features, the knowledge that separates professionals from beginners.
What you will learn
- Predict JavaScript's type coercion and equality behaviour and avoid its common traps
- Explain scope, closures, this and prototypes and use them deliberately
- Describe how the event loop schedules tasks and microtasks
- Write robust asynchronous code with promises, async/await and proper error handling
- Use modern ES features, modules, iterators, generators and functional patterns
- Debug and profile JavaScript in the browser and Node.js, and publish a small tested library
Curriculum
Module 1Language Core4 lessons
- 1Types, Coercion and Equality Free preview
- 2Scope and Closures
- 3The this Keyword Decoded
- 4Prototypes and Classes
- QModule quiz (4 questions)
Module 2Asynchronous JavaScript4 lessons
- 5The Event Loop Explained
- 6Promises in Depth
- 7async/await Patterns
- 8Error Handling in Async Code
- QModule quiz (4 questions)
Module 3Modern JavaScript4 lessons
- 9ES6+ Features Tour
- 10Modules
- 11Iterators and Generators
- 12Functional Patterns
- QModule quiz (4 questions)
Module 4Applied JS3 lessons
- 13Debugging Like a Pro
- 14Performance Considerations
- 15Course Project: Build a Library
- QModule quiz (4 questions)
PFinal project: tinyfetch: a small, tested JavaScript utility library
Who this course is for
- Developers who can write basic JavaScript but want to understand how it really works
- Front-end and Node.js developers preparing for more advanced work or technical interviews
- Programmers from other languages who need to become productive in JavaScript
Requirements
- A computer with a modern browser (Chrome, Firefox or Edge) and Node.js installed (free from nodejs.org)
- A code editor such as Visual Studio Code
- Basic JavaScript: variables, functions, arrays, objects and simple DOM or console use
What is included
Written lessons
15 lessons, each with a practical exercise and key points to remember.
Module quizzes
A short quiz at the end of each module. Pass mark 70%, and you can retake it.
Final project
tinyfetch: a small, tested JavaScript utility library. A practical brief with steps and a way to check your own work.
Certificate
A certificate of completion from EMFAD Courses with a unique code anyone can verify.
How the certificate works
Complete every lesson and pass every module quiz with 70% or more. Your certificate then appears in your learner area, ready to print or save as PDF. It shows your name, the course title, the completion date and a unique code. It is a certificate of completion from EMFAD Courses, not an accredited qualification.
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