Book Image

Hands-On Full Stack Web Development with Aurelia

By : Diego Argüelles Rojas, Erikson Murrugarra
Book Image

Hands-On Full Stack Web Development with Aurelia

By: Diego Argüelles Rojas, Erikson Murrugarra

Overview of this book

Hands-On Full Stack Web Development with Aurelia begins with a review of basic JavaScript concepts and the structure of an Aurelia application generated with the Aurelia-CLI tool. You will learn how to create interesting and intuitive application using the Aurelia-Materialize plugin, which implements the material design approach. Once you fully configure a FIFA World Cup 2018 app, you'll start creating the initial components through TDD practices and then develop backend services to process and store all the user data. This book lets you explore the NoSQL model and implement it using one of the most popular NoSQL databases, MongoDB, with some exciting libraries to make the experience effortless. You'll also be able to add some advanced behavior to your components, from managing the lifecycle properly to using dynamic binding, field validations, and the custom service layer. You will integrate your application with Google OAuth Service and learn best practices to secure your applications. Furthermore, you'll write UI Testing scripts to create high-quality Aurelia Apps and explore the most used tools to run end-to-end tests. In the concluding chapters, you'll be able to deploy your application to the Cloud and Docker containers. By the end of this book, you will have learned how to create rich applications using best practices and modern approaches.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Foreword
Contributors
Preface
Index

Managing events with Aurelia


We were explaining how to override and catch determined events and methods in the component life cycle, but what if we want to write our own methods and execute them when the user clicks on some button or moves the mouse for one section? We will start to delegate events.

The event delegation concept is a useful concept where the event handler is attached to one single element instead of multiple elements on the DOM. What implies that? Memory efficiency. It drastically reduces the number of event subscriptions by leveraging the bubbling characteristic of most DOM events.

On the other hand, we have the trigger concept. Similar, but not equal. You should use trigger binding when you need to subscribe to events that do not bubble (blur, focus, load, and unload).

Some examples are as listed:

  • You need to disable a button, input, or another element
  • The element's content is made up of other elements (reusable component)

In code words, it can be explained like this:

<select...