Summary

In this chapter, we learned how to use actions to integrate UI libraries, either written in vanilla JavaScript or any other frameworks into Svelte. We went through two real-world examples – integrating Tippy.js and react-calendar into Svelte using Svelte actions. In both examples, we went through a step-by-step process of writing out a Svelte action. We started by creating the structure of a Svelte action and then filled up the steps within the action for when the Svelte action is initialized as the element is created, when the data changes, and when the element is removed from the DOM. We also discussed why we choose to use Svelte actions, as well as the other alternatives and considerations when it comes to integrating UI libraries.

In the next chapter, we will look at the next common pattern of actions, which is to progressively enhance your elements.