Passing dynamic content through slots

When building complex applications, one size doesn’t always fit all. Balancing between a component’s modularity and a component’s flexibility for customization is crucial.

Take a generic Card component, for example. You might sometimes want to include special headlines, unique lists, or custom footers for specific use cases. It’s nearly impossible to anticipate every requirement, so it’s essential to design components that are both modular and maintainable, yet still open to customization.

This is where Svelte’s slot feature shines. Slots enable you to inject dynamic content into your components, making them incredibly versatile. Instead of designing a Card component that tries to include every possible feature, aim for a simple, clean base that can be enhanced through composition. This approach allows you to piece together more complex, customized components as your needs evolve.

In a Svelte component...