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Svelte & Sapper

Svelte er en ny tilgang til reaktive Front End Frameworks. Det bruger kompilering til at tilbyde hurtig runtime performance, hvor konkurrerende frameworks har brug for langsommere in-browser løsninger. Svelte har stadig alle de fordele, du kan forvente, ligesom reaktivitet, komponenter, brugervenlighed osv. Når du har gennemført kurset, vil du være klar til selvstændigt at starte og vedligeholde Svelte- og Sapper-projekter. Undervisningen foregår på engelsk.

The course is held in English.

Svelte made a high entry in 2019's State of JavaScript survey and for a good reason.


Professional software developer with knowledge of Javascript. Some knowledge of web technologies like HTML and CSS is helpful.


  • Svelte and JavaScript
  • Data binding
  • Conditional rendering
  • List rendering
  • Reactivity
  • Bindings
  • Component interaction
  • Project setup
  • Component Lifecycle
  • Stores
  • Transitions & Motion
  • Slots
  • Developer workflow
  • Svelte Internals
  • Sapper

Sapper extends Svelte with a Router, code-splitting, offline support, server-side rendering, etc.


  • Why use Svelte?
  • What is Svelte?
  • Language constructs for Svelte
  • EcmaScript 202X (JavaScript): The relevant features for Vue.js
  • Spread operator
  • Arrow functions
  • Object destructuring
  • More...
  • Option: TypeScript
Data binding
  • Render root
  • Content
  • Attributes
  • Handling events
  • Event modifiers
  • Styling
  • HTML Tags
  • Reactive assignments, declarations and statements
  • Updating Arrays and Objects
  • Inputs: Text, Numeric, Checkbox, Group
  • Single and Multiple Select
  • Other bindings
  • This
Component Interaction
  • Properties
  • Declaring Props
  • Default Values
  • Spread Props
  • Component events
  • Event forwarding
  • Component Bindings
  • Nested Components
Starting a project
  • Templates
  • Rollup and Webpack
  • Mounting
  • Destroying
  • Updates
  • Ticks
  • Writable, Readable, Derived and Custom Stores
  • Auto-subscriptions
  • Bindings
  • Fade
  • Fly
  • Slide
  • Draw
  • Tweened
  • Spring
  • Animations
  • Actions
  • Class directive
  • Basics
  • Fallback
  • Names
  • Props
Context API
  • getContext
  • setContext
Module context
  • Sharing code
Special Svelte Elements
  • Self
  • Component
  • Window
  • Window Bindings
  • Body
  • Head
  • Options
Developer Experience
  • Debugging
  • DevTools
  • Storybook
  • Testing
  • Templates
  • Routing
  • Client API
  • Preloading
  • Layouts
  • Server-Side Rendering
  • Stores
  • Prefetching


Material will have more than 100 examples of all the technologies used. Exercises are target to make the participants think instead of being directed, to achieve better memorization.


Course can be followed on both Mac and Window machines using Visual Studio Code or your editor of choice.


Rick is a senior consultant and trainer from The Netherlands. He has over 20 years of professional experience while working in small, large and fast growing organisations. His passion is simplicity, well-written code and team dynamics. He is specialised in front-end technologies and speaks regularly about these topics at international events.

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