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Sveltejs Academy

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Build fast and simple user interfaces with modern techniques at Svelte Academy.

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Course Overview

Welcome to the future of frontend development! Are you tired of complex frameworks, large bundle sizes, and slow applications? It's time to discover Svelte. Svelte isn't just another JavaScript framework; it's a revolutionary compiler that shifts the heavy lifting from the browser to the build step, resulting in incredibly fast, small, and truly reactive web applications. CoddyKit's "Learn Sveltejs" curriculum is meticulously designed to transform you into a proficient Svelte developer, ready to build high-performance, engaging user interfaces with unparalleled simplicity and elegance. Whether you're a seasoned developer looking to expand your toolkit or a beginner eager to dive into modern web development, this comprehensive learning path will guide you through every essential concept, from fundamental reactivity to advanced SvelteKit deployments. Get ready to experience a paradigm shift in how you build for the web!

Your Journey to Svelte Mastery: The CoddyKit Curriculum

Our expertly crafted "Learn Sveltejs" curriculum is broken down into progressive mini-courses, each building upon the last to ensure a solid understanding of Svelte's powerful features. Here's what you'll master:

1. Introduction to SvelteJS Fundamentals (Level: A1)

Embark on your Svelte journey by grasping its core principles. This foundational mini-course will introduce you to Svelte's unique compiler-first approach, highlighting how it differs from traditional frameworks and why it leads to such performant applications. You'll set up your development environment and build your very first Svelte application.

  • Understanding the Svelte Philosophy — Explore the design principles behind Svelte, such as its "write less code" mantra and how it achieves true reactivity without a virtual DOM. Discover how these principles set it apart from other popular frontend frameworks like React or Vue.js.
  • Setting Up the Svelte Environment — Get hands-on by installing all the necessary tools, including Node.js and the Svelte project template, to create your initial Svelte project. This lesson ensures you have a ready-to-code setup.
  • Your First Svelte Component — Dive into practical application by building a simple Svelte component. You'll learn the basic structure of a .svelte file and understand how components form the building blocks of any Svelte application.

2. Basic Svelte Components and Templates (Level: A1)

With the fundamentals in place, this mini-course focuses on the practical aspects of building interactive components and structuring your Svelte files. You'll learn how to leverage Svelte's intuitive template syntax for dynamic content and maintainable code.

  • Template Syntax and Data Binding — Master Svelte's straightforward template syntax. Learn how to display data, use expressions, and bind data to input elements, making your components interactive and responsive to user input.
  • Conditional Rendering and Loops — Control the flow and presentation of your UI. Utilize Svelte's {#if ...} blocks for conditional rendering and {#each ...} blocks for efficiently displaying lists of data, essential for dynamic web applications.
  • Creating Reusable Components — Adopt best practices for organizing your Svelte application. Learn to break down complex UIs into smaller, reusable components, promoting cleaner code and easier maintenance.

3. Svelte Variables and Reactivity (Level: A2)

Unlock the power of Svelte's reactivity model, a cornerstone of its performance and simplicity. This mini-course provides a deep dive into how Svelte automatically tracks and updates the DOM when your data changes, eliminating boilerplate code.

  • Reactive Declarations — Understand how Svelte's compiler automatically updates the DOM whenever variables change. This magical feature simplifies your code and makes state management incredibly intuitive.
  • Computed Properties and Refs — Discover how to use Svelte's reactive statements ($:) to derive new data from existing variables. This allows you to create efficient computed properties that automatically update when their dependencies change.
  • Understanding $: Syntax — Gain mastery over Svelte's powerful $: label. Learn to declare reactive statements, execute side effects, and implement complex logic that automatically re-runs when its dependencies are updated, enhancing your reactive programming skills.

4. Working with Props and Events (Level: A2)

Effective communication between components is crucial for any scalable application. This mini-course teaches you the essential mechanisms for data flow in Svelte: passing data down with props and emitting changes up with events.

  • Passing Props to Child Components — Learn how to configure component properties (props) to send data from parent to child components effectively. This is fundamental for building hierarchical and modular Svelte UIs.
  • Emitting and Handling Events — Master the process of dispatching custom events from child components and handling them in parent components. This enables robust communication patterns and interactive user experiences.
  • Working with Two-Way Binding — Explore Svelte's convenient two-way data binding feature. Understand how to streamline communication between parent and child components, particularly for form inputs, simplifying data synchronization.

5. Managing State with Stores (Level: B1)

For larger applications, managing global or shared state becomes paramount. This mini-course introduces Svelte's elegant store mechanism, providing a clean and efficient way to handle application-wide data.

  • Introduction to Writable Stores — Set up a writable store for managing shared data across your application. Learn how to subscribe to store values and update them, providing a centralized data source.
  • Readable and Derived Stores — Discover how to use readable stores for constant or externally managed data, and leverage derived stores to transform existing store values dynamically, creating powerful data pipelines.
  • Practical Store Usage — Implement stores in a small, practical application scenario. This hands-on experience will solidify your understanding of how shared state flows through components, making complex state management manageable.

6. Routing and Navigation with Svelte (Level: B1)

Build multi-page or multi-view single-page applications (SPAs) by implementing client-side routing. This mini-course guides you through integrating a routing library to manage navigation seamlessly within your Svelte projects.

  • Setting Up a Svelte Router — Integrate a popular routing library (like Svelte-Router or similar) to manage different views and support navigation in your Svelte application, forming the backbone of your SPA.
  • Dynamic Routes and Parameters — Learn to handle dynamic route parameters, enabling you to create flexible URLs for data-driven pages, such as user profiles or product details.
  • Navigation Guards and Hooks — Use route guards or hooks to control access to specific routes, manage transitions between pages, and perform actions before or after navigation, enhancing user experience and security.

7. Animations and Transitions in Svelte (Level: B2)

Elevate your user experience with Svelte's built-in animation and transition capabilities. This mini-course teaches you how to create engaging, interactive UIs with minimal effort, making your applications feel alive.

  • Intro to Transitions — Apply simple yet effective transitions to elements entering or leaving the DOM with Svelte's declarative syntax. Create smooth fade-ins, slide-outs, and more with very little code.
  • Customizing Transition Parameters — Fine-tune built-in transitions with parameters for timing, duration, easing functions, and other properties. This allows for highly customized and branded UI animations.
  • Animation and Motion — Explore advanced animation techniques using Svelte's motion directives. Bring more dynamic and fluid effects to your application, such as spring animations and tweened values, for a truly polished feel.

8. Advanced Component Patterns (Level: B2)

As your Svelte applications grow, mastering advanced component patterns becomes essential for scalability and maintainability. This mini-course delves into powerful techniques for structuring larger projects.

  • Slots and Named Slots — Utilize Svelte's flexible slot mechanism to customize component content while maintaining a clean separation of concerns. This enables highly reusable and configurable components.
  • Context API — Leverage the Context API for sharing data deeply within component trees without resorting to "prop drilling." This is invaluable for global configurations or theme settings.
  • Higher-Order Components — Implement advanced patterns like higher-order components (HOCs) to wrap existing components and extend their functionality. This promotes code reuse and separation of concerns for complex behaviors.

9. SvelteKit for Server-Side Rendering (Level: C1)

Take your Svelte skills full-stack with SvelteKit, the official framework for building robust Svelte applications. This mini-course covers server-side rendering (SSR), file-based routing, and seamless deployment for modern web development.

  • Setting Up a SvelteKit Project — Initialize a new SvelteKit project and understand its default project structure. Get acquainted with its conventions for building full-stack applications.
  • Pages, Layouts, and Routing — Master SvelteKit's intuitive file-based routing for quick setup of pages and API endpoints. Create shared layouts for consistent design across your application.
  • SSR and Client-Side Rendering — Discover how SvelteKit intelligently handles server-side rendering for optimal initial load performance, seamlessly integrating client-side navigation for a smooth user experience.

10. Fetching Data and Async Operations (Level: C1)

Real-world applications thrive on data. This mini-course will equip you with the skills to master data fetching techniques in Svelte and handle asynchronous operations gracefully, connecting your frontend to backend services.

  • Async Data Fetching in Svelte — Learn to use JavaScript’s native fetch API and Svelte’s reactivity to load and display external data from APIs. Understand how to integrate this data into your components.
  • Error Handling and Loading States — Provide a polished user experience by implementing loading indicators and handling errors gracefully during data fetching. This makes your applications robust and user-friendly.
  • Integrating External APIs — Connect your Svelte application to third-party services and RESTful APIs for extended functionality, building dynamic and data-rich web experiences.

11. Performance Optimization and Debugging (Level: C2)

Become a Svelte performance expert. This advanced mini-course teaches you how to identify and resolve bottlenecks, ensuring your applications run efficiently and provide an exceptional user experience, even at scale.

  • Profiling and Benchmarking — Identify performance bottlenecks in your Svelte app using browser developer tools and external profiling tools. Learn to measure rendering times and resource consumption.
  • Optimizing Rendering — Implement strategies to reduce unnecessary renders and manage reactivity efficiently. This includes memoization techniques and smart component updates to keep your application running smoothly.
  • Effective Debugging Strategies — Master modern browser developer tools and Svelte's built-in debugging features. Learn to troubleshoot issues quickly, inspect component states, and understand the flow of your application.

12. Deployment and Production Best Practices (Level: C2)

The final step in your journey: preparing your Svelte applications for the real world. This mini-course covers how to build, deploy, and maintain Svelte projects in production environments, ensuring scalability and reliability.

  • Building for Production — Configure build scripts and apply optimizations specific to Svelte for deploying your application at scale. Learn about code splitting, minification, and tree-shaking.
  • Hosting and Cloud Platforms — Explore various hosting options, including static site hosts and serverless platforms. Understand how to choose the right infrastructure for your SvelteKit or SPA needs.
  • Monitoring and Maintenance — Implement monitoring solutions to track application performance and user behavior. Establish a maintenance strategy to keep your Svelte application running smoothly and securely long-term.

What You'll Learn: Key Highlights

  • Build lightning-fast, small, and truly reactive web applications with Svelte.
  • Master Svelte's unique compiler-first approach and reactive programming model.
  • Develop robust, modular UIs using Svelte components, props, and events.
  • Efficiently manage application state with Svelte stores and the Context API.
  • Implement client-side routing and dynamic navigation for single-page applications.
  • Create engaging user experiences with Svelte's built-in animations and transitions.
  • Leverage SvelteKit for full-stack development, server-side rendering (SSR), and file-based routing.
  • Handle asynchronous operations, fetch data from APIs, and manage loading/error states.
  • Optimize Svelte application performance, debug effectively, and implement best practices.
  • Confidently deploy and maintain Svelte applications in production environments.

Who Is This Course For?

This "Learn Sveltejs" curriculum is perfect for:

  • Aspiring Frontend Developers: Eager to learn a modern, high-performance JavaScript framework.
  • Experienced Developers: Looking to diversify their skillset beyond React, Vue, or Angular, and explore Svelte's unique advantages.
  • Backend Developers: Who want to build their own frontend interfaces with a simpler, more intuitive framework.
  • UI/UX Designers: Interested in understanding the practical implementation of their designs with a powerful frontend tool.
  • Anyone passionate about building fast, efficient, and enjoyable web applications.

Join CoddyKit today and unlock the power of Svelte. Say goodbye to boilerplate code and hello to an enjoyable, highly productive frontend development experience. With our comprehensive "Learn Sveltejs" curriculum, you'll gain the skills to build the next generation of web applications, standing out in the competitive world of web development. Enroll now and start building incredible user interfaces with Svelte!

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How You'll Learn

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Interactive Lessons
Hands-on coding exercises with real-time feedback
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AI Tutor
Get instant help from our AI when you're stuck
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Built-in Editor
Write and run code directly in your browser
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Certificate
Earn a certificate when you complete the course
Curriculum

40 Courses

Every course in the Sveltejs Academy learning path.

01

Svelte Introduction & Setup

A14 lessons

Get started with Svelte by understanding what makes it different from other frameworks, setting up your first project, and exploring the pr…

  • What Is Svelte and Why It Compiles
  • Creating a Project with npm create svelte
  • Project Structure: src routes static
  • +1 more
02

Your First Svelte Component

A14 lessonsPRO

Learn how to write Svelte components from scratch, use reactive variables, interpolate expressions, and create computed values with reactiv…

  • The script template style Structure
  • Reactive Variables with let
  • Interpolation: {expression}
  • +1 more
03

Props & Component Communication

A24 lessonsPRO

Pass data between Svelte components using props, set default values, and forward props elegantly with $$props and $$restProps.

  • Declaring Props with export let
  • Passing Props from Parent
  • Default Prop Values
  • +1 more
04

Template Syntax: Conditionals & Loops

A24 lessonsPRO

Control what renders in your Svelte templates using conditional blocks, iterate over arrays with each blocks, and force re-renders with key…

  • {#if} {#else if} {#else}
  • {#each} with Index and Key
  • {#key} for Forcing Re-render
  • +1 more
05

Events & Event Handling

A24 lessonsPRO

Handle DOM events in Svelte, use event modifiers to simplify common patterns, dispatch custom events from child components, and forward eve…

  • on:click on:input on:submit
  • Event Modifiers: preventDefault stopPropagation once
  • Custom Events with createEventDispatcher
  • +1 more
06

Two-Way Binding

A24 lessonsPRO

Synchronize form inputs and DOM elements with Svelte variables using bind: directives for text, checkboxes, radio groups, and element refer…

  • bind:value for Text Inputs
  • bind:checked for Checkboxes
  • bind:group for Radio and Checkbox Groups
  • +1 more
07

Lifecycle Functions

B14 lessonsPRO

Control what happens at each stage of a Svelte component's life with onMount, onDestroy, beforeUpdate, afterUpdate, and the tick utility.

  • onMount: Running After Render
  • onDestroy: Cleanup
  • beforeUpdate and afterUpdate
  • +1 more
08

Svelte Stores: Writable & Readable

B14 lessonsPRO

Share reactive state across components using Svelte's built-in store primitives, subscribe to them with the $ shorthand, and create readabl…

  • Creating a writable Store
  • Subscribing with $ Auto-subscription
  • Updating Stores: set() and update()
  • +1 more
09

Derived Stores & Custom Stores

B14 lessonsPRO

Compose Svelte stores by deriving computed stores from one or more sources and build fully custom stores that implement the store contract.

  • derived() for Computed Stores
  • Custom Store Pattern with subscribe/set/update
  • Readable from Writable
  • +1 more
10

Slots & Component Composition

B14 lessonsPRO

Project content into Svelte components using default and named slots, provide fallback content, and check whether slots have been filled.

  • Default Slots for Content Projection
  • Named Slots with slot="name"
  • Slot Fallback Content
  • +1 more
11

CSS Transitions

B14 lessonsPRO

Animate elements entering and leaving the DOM with Svelte's built-in transition directives, configure timing and easing, and handle asymmet…

  • transition:fade and transition:fly
  • Transition Parameters: duration delay easing
  • in: and out: for Asymmetric Transitions
  • +1 more
12

CSS Animations

B14 lessonsPRO

Go beyond transitions with Svelte's animate directive for list reordering, physics-based spring animations, and tweened value interpolation.

  • animate:flip for List Reordering
  • The spring() and tweened() Stores
  • Custom Easing Functions
  • +1 more
13

SvelteKit Routing & Pages

B14 lessonsPRO

Navigate SvelteKit's file-based routing system, create dynamic routes with parameters, and use layout files to share UI across pages.

  • File-based Routing with +page.svelte
  • Dynamic Route Parameters: [id]
  • Optional and Rest Parameters
  • +1 more
14

SvelteKit Data Loading

B14 lessonsPRO

Load data for your pages using SvelteKit's load functions, handle errors gracefully, and run server-only logic in +page.server.js.

  • +page.js load Function
  • Returning Data and Using $page.data
  • Error Handling in load
  • +1 more
15

Context API

B14 lessonsPRO

Pass data deep into the component tree without prop drilling using Svelte's Context API, and understand when to prefer context over stores.

  • setContext() and getContext()
  • Context vs Stores: When to Use Each
  • Typed Context with TypeScript
  • +1 more
16

SvelteKit SEO & Meta

B14 lessonsPRO

Improve discoverability by setting dynamic meta tags, OpenGraph cards, JSON-LD structured data, and managing canonical URLs in SvelteKit.

  • svelte:head for Dynamic Meta Tags
  • OpenGraph and Twitter Card Meta
  • JSON-LD Structured Data in SvelteKit
  • +1 more
17

SvelteKit Form Actions

B24 lessonsPRO

Handle HTML form submissions on the server with SvelteKit form actions, enhance them progressively with JavaScript, and return validation e…

  • +page.server.js with actions
  • The use:enhance Directive
  • Progressive Enhancement for Forms
  • +1 more
18

SvelteKit API Routes

B24 lessonsPRO

Build RESTful and streaming API endpoints within SvelteKit using +server.js files, handle multiple HTTP methods, and return typed JSON resp…

  • +server.js: GET POST PUT DELETE
  • Request and RequestEvent
  • Returning JSON Responses
  • +1 more
19

SvelteKit Hooks

B24 lessonsPRO

Intercept and transform every request with SvelteKit's server hooks, log errors centrally, and compose multiple hooks with the sequence uti…

  • The handle() Hook: Middleware for Requests
  • handleError for Server Error Logging
  • The init() Hook
  • +1 more
20

SvelteKit Error Handling

B24 lessonsPRO

Provide great user experiences when things go wrong by customizing error pages, distinguishing expected from unexpected errors, and handlin…

  • +error.svelte for Custom Error Pages
  • Expected vs Unexpected Errors
  • error() and redirect() Helpers
  • +1 more
21

Advanced Svelte Reactivity

B24 lessonsPRO

Deepen your understanding of Svelte's reactive system: reactive statement ordering, when to use stores vs local state, and avoiding stale c…

  • Reactive Statements: $: block
  • Reactive Dependencies and Ordering
  • When to Use Stores vs Local State
  • +1 more
22

Svelte Actions

B24 lessonsPRO

Attach reusable imperative behaviors to DOM elements with Svelte actions, handle parameters and updates, and build practical actions like c…

  • use: Directive Syntax
  • Action Parameters and Updates
  • The destroy() Cleanup Function
  • +1 more
23

Custom Transitions & Animations

B24 lessonsPRO

Write custom Svelte transition functions from scratch, control timing parameters, and create morphing and advanced CSS versus JS-driven tra…

  • Writing a Custom Transition Function
  • Transition Parameters: node duration delay
  • Creating a morphing Transition
  • +1 more
24

Svelte Motion

B24 lessonsPRO

Animate values over time with Svelte's spring and tweened motion stores, use interpolation functions, and apply motion to SVG paths.

  • The spring() Store: Physics-Based Animation
  • The tweened() Store: Duration and Easing
  • Interpolation Functions
  • +1 more
25

SvelteKit Layouts Advanced

B24 lessonsPRO

Master SvelteKit's advanced layout system: group layouts, route-level overrides, breaking out of layouts, and sharing data across the layou…

  • Layout Groups with (group)
  • Route-Level Layouts
  • Breaking Out of a Layout with +page@route
  • +1 more
26

SvelteKit Auth Patterns

B24 lessonsPRO

Implement authentication in SvelteKit using cookie-based sessions, secure JWTs, route protection in hooks, and OAuth with Lucia Auth.

  • Cookie-Based Sessions
  • JWT in HTTP-Only Cookies
  • Protected Routes in handle() Hook
  • +1 more
27

SvelteKit Adapters & Deployment

B24 lessonsPRO

Deploy SvelteKit applications anywhere using the right adapter: static sites, Node.js servers, Vercel, and Cloudflare Workers.

  • adapter-static for Static Sites
  • adapter-node for Node.js Server
  • adapter-vercel and adapter-cloudflare
  • +1 more
28

Svelte 5: Runes Introduction

B24 lessonsPRO

Discover Svelte 5's runes system which replaces compiler magic with explicit reactive primitives for state, derived values, and side effect…

  • Why Runes: Moving Beyond the Compiler Magic
  • $state: Fine-Grained Reactivity
  • $derived: Declarative Computed Values
  • +1 more
29

Svelte 5: Props & Snippets

B24 lessonsPRO

Use $props() for typed component props and the new snippet syntax with {#snippet} and {@render} for powerful content composition in Svelte…

  • $props() for Typed Props
  • {#snippet} and {@render}
  • Passing Snippets as Props
  • +1 more
30

SvelteKit SSR & Prerendering

B24 lessonsPRO

Control rendering strategy per route in SvelteKit: choose between universal and server-only load, prerender static pages, and disable SSR w…

  • Universal vs Server-Only load
  • prerender = true for Static Pages
  • ssr = false for Client-Only Pages
  • +1 more
31

Testing Svelte: Unit Tests

B24 lessonsPRO

Write reliable unit tests for Svelte components and stores with Vitest and @testing-library/svelte, covering rendering, interaction, and mo…

  • Vitest Setup for Svelte Projects
  • @testing-library/svelte: render and fireEvent
  • Testing Stores and Reactivity
  • +1 more
32

Testing Svelte: E2E with Playwright

B24 lessonsPRO

Write end-to-end tests for SvelteKit applications using Playwright, covering page navigation, form interactions, and CI pipeline integratio…

  • Playwright Setup in SvelteKit
  • Writing Page Interaction Tests
  • Testing Forms and Navigation
  • +1 more
33

Integrating Third-Party Libraries

B24 lessonsPRO

Add Tailwind CSS, D3.js data visualizations, Leaflet maps, and rich text editors to SvelteKit projects using Svelte actions and component w…

  • Using Tailwind CSS with SvelteKit
  • D3.js Charts in Svelte
  • Leaflet Maps with Svelte Actions
  • +1 more
34

SvelteKit Security

B24 lessonsPRO

Harden your SvelteKit application against CSRF, XSS, and injection attacks, manage environment variables safely, and rate-limit API routes.

  • CSRF Protection in Form Actions
  • XSS Prevention in {#html}
  • Environment Variables: $env/static and $env/dynamic
  • +1 more
35

Svelte 5: Advanced Runes

C14 lessonsPRO

Explore advanced Svelte 5 rune patterns including raw state, complex derivations, manual effect cleanup, and migrating from Svelte 4.

  • $state.raw for Non-Reactive State
  • $derived.by for Complex Derivations
  • $effect.root for Manual Cleanup
  • +1 more
36

Advanced Component Patterns

C14 lessonsPRO

Build sophisticated, reusable Svelte component APIs using render props with snippets, higher-order components, the builder pattern, and com…

  • Render Props with Snippets
  • Higher-Order Components
  • The Builder Pattern for Headless UI
  • +1 more
37

SvelteKit Streaming

C14 lessonsPRO

Deliver fast initial page loads by streaming promises from load functions, defer slow data, and stream from API routes using ReadableStream.

  • Streaming Data with Promises in load
  • Deferred Loading and Suspense-Like UX
  • Streaming from Server with +server.js
  • +1 more
38

SvelteKit Performance

C14 lessonsPRO

Optimize SvelteKit app performance with automatic code splitting, enhanced image handling, lazy loading, and profiling tools.

  • Code Splitting and Dynamic Imports
  • Optimizing Images with @sveltejs/enhanced-img
  • Lazy Loading Components
  • +1 more
39

State Management at Scale

C14 lessonsPRO

Architect large Svelte applications with feature-module store patterns, event buses, optimistic UI updates, and undo/redo with store histor…

  • Store Architecture: Feature Modules
  • Event Bus Pattern with Stores
  • Optimistic UI Updates
  • +1 more
40

Building a Full-Stack SvelteKit App

C14 lessonsPRO

Combine everything you've learned to build a production-ready full-stack app with auth, a database via Drizzle ORM, deployment on Vercel, a…

  • Auth + Database + API: Architecture
  • Drizzle ORM with SvelteKit
  • Deploying to Vercel with a Database
  • +1 more

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