Deep Dive into Data Loading

Every application ever created has been driven by data. Without data to process, an application is effectively useless. That’s why it’s very important for developers to have a firm understanding of how to manage the retrieval of that data for their application. When working with SvelteKit, this is done by exporting a load() function in page or layout files.

In the previous chapter, we briefly touched on load(). In this chapter, we’ll analyze it further by discussing how it works and by looking at more practical, real-world examples of making use of it. We’ll create an example of forcing load() in the client only as well as covering some key details to remember when using load(). We’ll also use load() in layouts to showcase how it can make data portable across our application. Finally, we’ll look at an example of making use of some of the data provided in a server load() function that is unavailable in universal...