How can I request an increase to the HTML5 localstorage size on iPad, like the FT web app does?

Question

If you open http://app.ft.com (the Financial Times mobile web app), you are prompted to add the app to your \"home\".

After doing this, when you open the app, you ar

Answer 1

This database is part of Web SQL Database API, which is not part of HTML5. Use the following the set the size of your database

function prepareDatabase(ready, error) {
    return openDatabase('documents', '1.0', 'Offline document storage', 50*1024*1024, function (db) {
        db.changeVersion('', '1.0', function (t) {
            t.executeSql('CREATE TABLE docids (id, name)');
        }, error);
    });
}

Introducing Web SQL Databases on HTML5 Doctor has a very quick tutorial on how all of this works.