HTML5 Web Application Development By Example Beginner's guide

Time for action – creating a localStorage wrapper

To help get around some of the limitations of localStorage we are going to create an object called AppStorage that provides a wrapper over the localStorage object. The AppStorage object will help us avoid key collisions and provide an easy way to store non-string values. Let's define this object in a new file called appStorage.js, so we can reuse it in all of our applications. You can find the code for this section in Chapter 1/example1.3.

function AppStorage(appName)
{
    var prefix = (appName ? appName + "." : "");

The constructor takes in the application name as a parameter. The next line sets a private variable named prefix that will be used to prefix all of our keys with the application name to ...