IndexedDB is a database inside a browser to save and retrieve objects on the browser/client.
The Jquery IndexedDB Plugin is a wrapper over IndexedDB, making it easier to use with Jquery.
Don’t worry out browser differences ( setVersion/onupgradeneeded ).
Use Jquery promises in place of requests
Supports chaining, less verbose syntax
IndexedBD is not supported on all browsers . You can use the IndexedDB polyfill over WebSQL to get the plugin working on Opera, Safari, iPad, iPhone, etc.