January 2016
Intermediate to advanced
278 pages
4h 53m
English
Content preview from Mastering Backbone.jsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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IndexedDB in Backbone
As the IndexedDB API is more complex than localStorage, it will be more difficult to create an IndexedDB driver for Backbone as we did with localStorage; in this section, you will use what you have learned about IndexedDB in order to build a driver for Backbone.
The driver should open a database and initialize the stores when it is created for the first time:
// indexedDB/dataStore.js 'use strict'; var Backbone = require('backbone'); const ID_LENGTH = 10; var contacts = [ // ... ]; class DataStore { constructor() { this.databaseName = 'contacts'; } openDatabase() { var defer = Backbone.$.Deferred(); // If a database connection is already active use it, // otherwise open a new connection if (this.db) { defer.resolve(this.db); ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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