Book Image

Getting Started with Web Components

By : Prateek Jadhwani
Book Image

Getting Started with Web Components

By: Prateek Jadhwani

Overview of this book

Web Components are a set of APIs that help you build reusable UI modules that can operate in any modern browser using just Vanilla JavaScript. The power of Web Components lies in their ability to build frontend web applications with or without web frameworks. With this practical guide, you will understand how Web Components can help you build reusable UI components for your modern web apps. The book starts by explaining the fundamentals of Web Components' design and strategies for using them in your existing frontend web projects. You will also learn how to use JavaScript libraries such as Polymer.js and Stencil.js for building practical components. As you progress, you will build a single-page application using only Web Components to fully realize their potential. This practical guide demonstrates how to work with Shadow DOM and custom elements to build the standard components of a web application. Toward the end of the book, you will learn how to integrate Web Components with standard web frameworks to help you manage large-scale web applications. By the end of this book, you will have learned about the capabilities of Web Components in building custom elements and have the necessary skills for building a reusable UI for your web applications.
Table of Contents (14 chapters)
Title Page
7
Implementing Web Components using Polymer and Stencil

Overview of life cycle callback methods

Life cycle events are events that are triggered inside a web component when it reaches a certain stage of execution. These stages reflect the overall process of creating a web component and can be controlled with the help of life cycle callback methods. Life cycle callback methods are hooks or interfaces that get called back whenever a Web Component goes through these life cycle events.

Let me explain this with the help of an example. Suppose you have a shoe that you would like to wear. There may be certain events associated with the life cycle of this shoe. Let's say you want to wear it. You put your foot in and tie the lace. This triggers an event called lacesTied(). Now, you as a user who is wearing this shoe may choose to act on it. You can write a conditional block to check whether lacesTiedStrength > 100 or whether...