This demo is intended to show off some of the core scenarios for which you may want to use the GrabId JavaScript SDK.
You can find the SDK referenced for this project here: GrabID Javascript SDK
You can find this demo running live here: Live Demo
The relevant points of integration with the SDK can be found in these places:
Receiving the result of the authorization request and redirecting appropriately
Getting a token and using it to make an authenticated call
Everything else in the repository is just there to make it feel more like a "real" site. The areas listed above are the only places where this demo implements the GrabID SDK.