Book Image

Real-World Svelte

By : Tan Li Hau
4.3 (4)
Book Image

Real-World Svelte

4.3 (4)
By: Tan Li Hau

Overview of this book

Svelte has quickly become a popular choice among developers seeking to build fast, responsive, and efficient web applications that are high-performing, scalable, and visually stunning. This book goes beyond the basics to help you thoroughly explore the core concepts that make Svelte stand out among other frameworks. You’ll begin by gaining a clear understanding of lifecycle functions, reusable hooks, and various styling options such as Tailwind CSS and CSS variables. Next, you’ll find out how to effectively manage the state, props, and bindings and explore component patterns for better organization. You’ll also discover how to create patterns using actions, demonstrate custom events, integrate vanilla JS UI libraries, and progressively enhance UI elements. As you advance, you’ll delve into state management with context and stores, implement custom stores, handle complex data, and manage states effectively, along with creating renderless components for specialized functionalities and learning animations with tweened and spring stores. The concluding chapters will help you focus on enhancing UI elements with transitions while covering accessibility considerations. By the end of this book, you’ll be equipped to unlock Svelte's full potential, build exceptional web applications, and deliver performant, responsive, and inclusive user experiences.
Table of Contents (22 chapters)
1
Part 1: Writing Svelte Components
6
Part 2: Actions
10
Part 3: Context and Stores
16
Part 4: Transitions

Lifecycles in Svelte

Svelte is a frontend framework. You can use Svelte to build websites and web applications. A Svelte application is made up of components. You write a Svelte component within a file with .svelte extension. Each .svelte file is one Svelte component.

When you create and use a Svelte component, the component goes through various stages of the component lifecycle. Svelte provides lifecycle functions, allowing you to hook into the different stages of the component.

In this chapter, we will start by talking about the various lifecycles and the lifecycle functions in Svelte. With a clear idea of lifecycles in mind, you will then learn the basic rule of using the lifecycle functions. This is essential, as you will see that this understanding will allow us to use the lifecycle functions in a lot of creative ways.

This chapter contains sections on the following topics:

  • What are Svelte lifecycle functions?
  • The rule of calling lifecycle functions
  • How to reuse and compose lifecycle functions