Master the Svelte Framework
Test your knowledge on Svelte, the modern web framework for building fast and reactive UIs. This quiz covers everything from basic concepts to advanced techniques.
Question 1 of 15Master the Svelte Framework
Idyllic quiz Master the Svelte Framework All 15 questions
- What is the core concept that differentiates Svelte from most other JavaScript frameworks?It compiles code to optimized JavaScript at build time. · It requires no build step and runs directly in the browser. · It relies solely on server-side rendering. · It uses only plain HTML, CSS, and JavaScript.
- Consider the following code: ```javascript import { onMount, beforeUpdate, afterUpdate, onDestroy } from 'svelte'; let resource; onMount(() => { /* Some code */ }); ///... other hooks ``` Which lifecycle hook is executed when the component is inserted into the DOM?onMount · afterUpdate · onDestroy · beforeUpdate
- What symbol does Svelte use to declare reactive statements?#reactive · @reactive · %reactive · $:
- Consider the following code: ```javascript import { readable, writable } from 'svelte/store'; const count = writable(0); count.set(1); ``` How does Svelte handle state updates in its store, compared to Redux or Vuex?State updates with getState and dispatch. · State updates with promises and async calls. · State updates with store.set(...). · State updates with actions and mutations.
- Which method would you use to create a writable store in Svelte?import { store } from 'svelte/writable'; · import { state } from 'svelte/state'; · import { writable } from 'svelte/store'; · import { reactive } from 'svelte/store';
- How can you ensure that a variable in Svelte is reactive and updates its value automatically?By declaring it with `$: variable = ...`. · By using a `reactive` keyword. · By calling `variable.refresh()`. · By encapsulating it with `computed` keys.
- What is the purpose of the onDestroy lifecycle hook in Svelte?To trigger updates every render cycle. · To handle component's initialization. · To clean up resources when the component is destroyed. · To fetch initial data for the component.
- Which of the following best describes Svelte's transition functionality?It uses the Web Animations API internally for all transitions. · It replaces CSS animation rules. · It allows for smooth, built-in transitions. · It doesn't support any animations.
- What does Svelte store's subscribe method return?A boolean indicating subscription success. · An `unsubscribe` function. · The current state of the store. · A promise with store value.
- Which method in Svelte's writable store updates and notifies all subscribers?set · notify · commit · update
- In Svelte, how do you import a custom store?import { store } from 'svelte'; · import store from './store.js'; · import store from '@svelte/store'; · import store from 'store';
- What is the main advantage of using SvelteKit for Svelte applications?It only supports static sites. · Simplifies SSR and routing in Svelte apps. · It removes the need for JavaScript. · It is required for using Svelte.
- Which built-in function does Svelte use to animate transitions when components are created or destroyed?move · animate · create · transition
- How do you define a reactive store in Svelte that depends on values from other stores?Using reactive declarations or computed stores. · Using promises and async functions. · Using props and context. · Using callback functions.
- Why is Svelte considered to have a low learning curve?Because it simplifies server-side code. · Because it has no new concepts. · Its declarative approach to managing state. · Because it uses no framework abstractions.
