Book Image

Ember.js Cookbook

By : Erik Hanchett
Book Image

Ember.js Cookbook

By: Erik Hanchett

Overview of this book

Ember.js is an open source JavaScript framework that will make you more productive. It uses common idioms and practices, making it simple to create amazing single-page applications. It also lets you create code in a modular way using the latest JavaScript features. Not only that, it has a great set of APIs to get any task done. The Ember.js community is welcoming newcomers and is ready to help you when needed. This book provides in-depth explanations on how to use the Ember.js framework to take you from beginner to expert. You’ll start with some basic topics and by the end of the book, you’ll know everything you need to know to build a fully operational Ember application. We’ll begin by explaining key points on how to use the Ember.js framework and the associated tools. You’ll learn how to effectively use Ember CLI and how to create and deploy your application. We’ll take a close look at the Ember object model and templates by examining bindings and observers. We’ll then move onto Ember components, models, and Ember Data. We’ll show you examples on how to connect to RESTful databases. Next we’ll get to grips with testing with integration and acceptance tests using QUnit. We will conclude by covering authentication, services, and Ember add-ons. We’ll explore advanced topics such as services and initializers, and how to use them together to build real-time applications.
Table of Contents (18 chapters)
Ember.js Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Handling HTML actions


Often, in an application, we'll need to allow interaction with controls that affect the application state. To accomplish this, we'll use actions.

How to do it...

The {{action}} helper is used on HTML elements to send actions back to the template's corresponding controller or component when the user clicks on an element. Let's take a look at an example of this.

  1. Create a new project, navigate to the root of the application directory, and type this command to generate a new component:

    $ ember g component action-component
    

    Keep in mind that all components must have a dash in their names. This will generate the component template, JavaScript files, and test files.

  2. Edit the action-component.js file in the components folder. We'll add the action, toggleText:

    // app/components/action-component.js
    import Ember from 'ember';
    
    export default Ember.Component.extend({
      showText: true,
      actions: {
        toggleText(){
          this.toggleProperty('showText');
        }
      }
    });

    In this example,...