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

Reducing motion for Svelte transition

After learning how to obtain a user’s preference for reduced motion, let’s now respect that preference by reducing unnecessary motions in our transitions, which could potentially trigger vestibular discomfort.

In the following code block, there is an example of our Svelte component, which has a fly transition applied to the list items:

<script>
  import { fly } from 'svelte/transition';
  export let list = [];
</script>
<ul>
  {#each list as item}
    <li transition:fly={{ x: 40 }}>{item}</li>
  {/each}
</ul>

In the preceding code, whenever a new item is added to the list, a new <li> element will fly in from the right and be inserted into the list. This flying motion could be a trigger for users with vestibular disorders.

However, the flying transition is not essential because the application will still function...