Extensions in Qlik Sense offer the beautiful opportunity to extend your Qlik Sense user experience by creating bespoke data visualizations, objects, or control elements that interact with the powerful Qlik data engine. It's mainly useful when you have a particular use case in mind, or you have seen a great visualization that you would like to implement in Qlik to visualize your data. Furthermore, sometimes advanced use cases exceed the native capabilities of Qlik Sense and require you to introduce custom objects to facilitate some niche requirements.
Luckily, with Qlik Sense and a basic knowledge of web development, this is not very difficult to achieve, and, with a little bit of practice, the possibilities on top of the Qlik Engine have no limits. To get you there, you have so far in this book internalized the basic concepts of web development...
