Interview Questions and Answers
Freshers / Beginner level questions & answers
Ques 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.
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Ques 2. 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.
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Ques 3. How can you perform conditional rendering in Svelte?
Conditional rendering in Svelte can be done using the 'if' and 'else' blocks. For example: {#if condition} ... {:else} ... {/if}
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Ques 4. What is the purpose of the 'bind:' directive in Svelte?
The 'bind:' directive in Svelte is used for two-way binding. It establishes a connection between a parent component's property and a child component's property, ensuring changes in one affect the other.
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Ques 5. What is the purpose of the 'on:' directive in Svelte?
The 'on:' directive in Svelte is used to handle DOM events. For example: {on: {click: handleClick}}
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Ques 6. How does Svelte handle global CSS styles?
Svelte allows you to include global CSS styles using the 'global' keyword. Styles defined with 'global' apply globally across all components.
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Ques 7. How can you conditionally apply CSS classes in Svelte?
You can conditionally apply CSS classes in Svelte using the 'class:' directive. For example: {class: active ? 'active' : 'inactive'}
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Ques 8. How can you handle form submissions in Svelte?
Form submissions in Svelte can be handled using the 'on:submit' directive. You can prevent the default form behavior and implement your custom logic in the associated function.
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Ques 9. What is the purpose of the 'this' keyword in Svelte?
In Svelte, the 'this' keyword refers to the instance of the current component. It can be used to access component methods, properties, and other features.
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Ques 10. Explain the purpose of the 'bind:this' directive in Svelte.
The 'bind:this' directive in Svelte is used to bind a DOM element to a variable, making it accessible in your component. Changes to the variable also reflect in the DOM element.
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Ques 11. How can you handle HTTP requests in Svelte?
Svelte does not include built-in HTTP request functionality. Developers often use libraries like 'fetch' or 'axios' to handle HTTP requests in Svelte applications.
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Most helpful rated by users:
- 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?
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