Book Image

Ionic 2 Cookbook - Second Edition

By : Hoc Phan
Book Image

Ionic 2 Cookbook - Second Edition

By: Hoc Phan

Overview of this book

Developing real-time apps is the need of the hour, and apps that deal with humongous amounts of user data and real-time information that needs to be updated frequently are in high demand. Currently, one of the most popular frameworks for this task is Ionic Framework, which is undergoing a major makeover. This book will get you started with Ionic and help you create Angular 2 components that interact with templates. From there, you’ll work with Ionic components and find out how to share data efficiently between them. You’ll discover how to make the best use of the REST API to handle back-end services and then move on to animating the application to make it look pretty. You’ll learn to add in a local push notification in order to test the app. You’ll work with Cordova to support native functionalities on both iOS and Android. From there, you’ll get to grips with using the default themes for each platform as well as customizing your own. Finally, you’ll see how best to deploy your app to different platforms. This book will solve all your Ionic-related issues through dedicated recipes that will help you get the best out of Ionic.
Table of Contents (16 chapters)
Ionic 2 Cookbook Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Creating a complex form with input validation


In this section, you will build an app to demonstrate form validation using ngForm and ngControl. Here is a screenshot of the form:

If the user tries to submit without providing valid information, the form will show the following error:

Basically, the Name field is required. The Phone field is the number type, but is optional. The Comment field is required and the user must enter at least four characters. Of course, this is just for demonstration of the input length. The user, finally, must agree to the terms and conditions via the toggle input.

After a successful validation, the user will be taken to the second screen with a summary of the previous screen, as illustrated in the following screenshot:

Getting ready

This app example could work either in a browser or on a physical device. However, you can optionally connect your physical device to verify the Phone field for number keypad.

How to do it…

Observe the following the instructions:

  1. Create a new...