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

Creating custom tweened interpolators

Sometimes, you may want to transition between non-numeric values, such as colors. Fortunately, this doesn’t prevent us from using the tweened store. The tweened function offers an option to define custom interpolation between two values.

In this section, we’ll explore how to create a custom interpolation to smoothly transition between two colors.

But what is interpolation?

When transitioning between two values, interpolating means generating intermediate values between the values, to create a smooth transition.

For example, consider a tweened store initialized at 0, and we set it to 100. The tweened store generates intermediate values between 0 and 100, such as 20, 40, 60, and so on, while updating the store value with these intermediate values. As a result, during the transition from 0 to 100, the store value smoothly changes, providing a visually appealing progression from 0 to 100.

This process of generating intermediate...