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Ionic Cookbook

You're reading from   Ionic Cookbook Over 35 exciting recipes to spice up your application development with Ionic

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Product type Paperback
Published in Oct 2015
Publisher Packt
ISBN-13 9781785287978
Length 264 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Hoc Phan Hoc Phan
Author Profile Icon Hoc Phan
Hoc Phan
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Toc

Table of Contents (12) Chapters Close

Preface 1. Creating Our First App with Ionic FREE CHAPTER 2. Managing States and Navigation 3. Adding Device Features Support 4. Offline Data Storage 5. Handling Gestures and Events 6. App Theme Customization 7. Extending Ionic with Your Own Components 8. User Registration and Authentication 9. Saving and Loading Data Using Firebase 10. Finalizing Your Apps for Different Platforms Index

Introduction

In this chapter, you will learn how to store and retrieve data from a local device when there is no Internet access. This is important for some apps because of their specific use cases. For example:

  • The data does not need to be stored in the server
  • It's faster to store data locally and sync it to the server using background processing
  • The app must work locally and send data to the server when it's online again

There are several methods for offline data persistence.

  • In the past, you probably leveraged cookies in some aspects to store session data such as information regarding whether a user has visited a certain page. Cookies are used for very basic use cases because of their size limitation (4,095 bytes). Cookies are sent to a server on each HTTP request so that the server also has access to this information. This may result in a waste of bandwidth.
  • Browsers today have Local Storage support, which is a better method. Local Storage can store up to 5 MB of data and is available...
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