面试题与答案

Svelte.js is a modern JavaScript framework that compiles components at build time, resulting in highly optimized and lightweight code for the browser.

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.

Conditional rendering in Svelte can be done using the 'if' and 'else' blocks. For example: {#if condition} ... {:else} ... {/if}

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.

The 'on:' directive in Svelte is used to handle DOM events. For example: {on: {click: handleClick}}

Svelte allows you to include global CSS styles using the 'global' keyword. Styles defined with 'global' apply globally across all components.

You can conditionally apply CSS classes in Svelte using the 'class:' directive. For example: {class: active ? 'active' : 'inactive'}

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.

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.

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.

Svelte does not include built-in HTTP request functionality. Developers often use libraries like 'fetch' or 'axios' to handle HTTP requests in Svelte applications.