Let’s assume we want to extend the blog card component. We can have multiple slots in a Svelte component by using the name attribute on the slot component. Slot fallbacks are also useful if you need to set up dummy data for your components while developing. This way, every blog card we have will have the generic “Fallback Blog Title” heading until we pass in the actual data. Whatever data we pass between the opening and closing tags of the slot component will be the fallback content: We may want to add a fallback title to each post until the cards receive the actual data. Say we create a blog post card component. We can add fallback content to slots to act as placeholders when the slots are empty. We can use the Card component in App.svelte and pass in our content:

The slot component allows us to pass child data and content to the Card component, thereby making it reusable. In the code above, we created a Card component. In this article, we will learn how to compose reusable Svelte components with slots, including the different ways we can use them by looking at some practical code examples. Slots also make maintaining, debugging, and updating components easier. Slots are useful because they help keep our codebase DRY.

This way, we will be able to create components that can be used multiple times in our application. We can use Svelte slots to create components that accept and render any children.

But how can we handle passing child data to parent components in Svelte? With UI libraries like React, we can create reusable components with React’s children prop. One way of creating a reusable component is by passing children elements or components to parent components.

CLIPS test per element of multislots