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Frontend / Beginner

Web Components Tutorial

A complete Syntaxis course for Web Components, organized into atomic topics with concept-specific examples and mastery checks.

48 lessons~9.6 hoursvCurrent workspace_premium Certificate available

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Course curriculum

MODULE 01

Custom Elements

8 lessons

1Define custom element

2Autonomous custom element

3Custom element constructor

4connectedCallback

5disconnectedCallback

6attributeChangedCallback

7observedAttributes

8Custom element upgrade

MODULE 02

Shadow DOM

8 lessons

2Open shadow root

3Closed shadow root

4Shadow tree styles

5Style encapsulation

6CSS custom properties across shadow

MODULE 03

Templates & Slots

8 lessons

1template element

2DocumentFragment cloning

7assignedElements

8Fallback slot content

MODULE 04

Attributes & Properties

8 lessons

1Reflect property to attribute

2Boolean attributes

3Property-only complex values

4Attribute parsing

6Event composed option

7Event bubbling across shadow

8Form-associated concept

MODULE 05

Styling & APIs

8 lessons

1adoptedStyleSheets

2Constructable stylesheet

3ElementInternals

4ARIA via internals

5Custom states concept

6Declarative shadow DOM

7Scoped registry concept

8Lifecycle-safe listeners

MODULE 06

Production Patterns

8 lessons

1Lazy definition

2define idempotently

3Versioning tag names

4SSR hydration strategy

5Testing shadow DOM

6Accessibility naming

7Performance template reuse

8Progressive enhancement

Certificate Included

Web Components Certificate

Earn this credential in either of two ways: complete 100% of the course, or take the master exam directly and score 85% or higher. You do not need to finish the course before attempting the exam.

Course completion path

Finish every published lesson → completion certificate is issued automatically.

Mastery exam path

15 MCQs · 100 marks · 30 minutes · 85% pass · 4 attempts.

Fresh questions each attemptNo backtrackingPublic verificationAdd to LinkedIn

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