Widget reference Reference topics for GBC widgets Widget JavaScript fileA widget JavaScript (.js) file contains specific JavaScript code that implements a widget as an element of the user interface. This page shows examples of how to extend existing widgets and implement changes by registering them as new widget classes.Widget template fileA widget template (.tpl.html) file contains HTML code that implements an element of the user interface. Working with these components individually or grouped in containers simplifies your work in building a customized UI.Widget scss fileThe Genero Browser Client (GBC) widget scss file contains the widget styles. The scss files contain the colors, fonts, and variables that define styles. Widgets with ModelhelperGBC provides a ModelHelper class with APIs to help you customize widgets.