Svelte.js Questions et reponses d'entretien
Question 1. What is Svelte.js?
Svelte.js is a modern JavaScript framework that compiles components at build time, resulting in highly optimized and lightweight code for the browser.
Question 2. Explain the concept of reactivity in Svelte.
Reactivity in Svelte refers to the automatic updating of the DOM when the state of a variable changes. Svelte achieves this without the need for a virtual DOM.
Question 3. What is the purpose of the 'svelte:head' tag?
The 'svelte:head' tag is used to dynamically update the document head with meta tags, title, and other head elements based on the component's state.
Question 4. Differentiate between Svelte and other front-end frameworks like React or Vue.
Svelte compiles components to highly optimized JavaScript at build time, resulting in smaller bundle sizes and improved performance compared to traditional virtual DOM-based frameworks like React or Vue.
Question 5. Explain the Svelte component lifecycle.
Svelte components have a simplified lifecycle compared to other frameworks. They do not have lifecycle methods like 'componentDidMount' or 'componentWillUnmount'. Instead, Svelte components have 'onMount' and 'onDestroy' lifecycle functions.
Les plus utiles selon les utilisateurs :
- What is Svelte.js?
- Explain the concept of reactivity in Svelte.
- How can you perform conditional rendering in Svelte?
- What is the purpose of the 'on:' directive in Svelte?
- How does Svelte handle global CSS styles?