Book Image

Svelte 3 Up and Running

By : Alessandro Segala
Book Image

Svelte 3 Up and Running

By: Alessandro Segala

Overview of this book

Svelte is a modern JavaScript framework used to build static web apps that are fast and lean, as well as being fun for developers to use. This book is a concise and practical introduction for those who are new to the Svelte framework which will have you up to speed with building apps quickly, and teach you how to use Svelte 3 to build apps that offer a great app user experience (UX). The book starts with an introduction to Svelte 3, before showing you how to set up your first complete application with the framework. Filled with code samples, each chapter will show you how to write components using the Svelte template syntax and the application programming interfaces (APIs) of the Svelte framework. As you advance, you’ll go from scaffolding your project and tool setup all the way through to production with DevOps principles such as automated testing, continuous integration, and continuous delivery (CI/CD). Finally, you’ll deploy your application in the cloud with object storage services and a content delivery network (CDN) for best-in-class performance for your users. By the end of this book, you’ll have learned how to build and deploy apps using Svelte 3 to solve real-world problems and deliver impressive results.
Table of Contents (9 chapters)

Svelte templates and reactivity

Let's start by creating our first components and explore how Svelte deals with templates and reactive statements.

Naming conventions

Names for Svelte components always begin with an uppercase letter. This makes it possible to distinguish Svelte components from HTML tags, which always start with a lowercase letter. For example, Input refers to a Svelte component, while input is the usual HTML tag.

Of particular importance when building a full web application with Svelte is that the root component is conventionally called App.

As for organizing your source files, in this book we'll be storing Svelte component files in the src/components/ folder, in a file carrying the same name as the component. For example, the App component will be located in src/components/App.svelte (recall from Chapter 2, Scaffolding Your Svelte Project, how each .svelte file contains one—and only one—component).

Renderer.svelte component

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