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

One-way versus two-way data flow

When you pass data from one component to another component either through props or binding, data flows from one component to another component. The term data flow refers to how data is passed or transmitted between components or elements within a web application.

Understanding data flow is important when designing an application’s architecture, as it helps to establish clear lines of communication between components and determine how information is shared and updated throughout the system.

Data flow can be unidirectional (one-way) or bidirectional (two-way), depending on how data is transferred between components.

In one-way data flow, data moves in a single direction, from a parent to a child component, or from a component to a DOM element. This unidirectional flow is achieved through component props or DOM element attributes.

For example, consider the following code snippets featuring two components, component A and component B...