I have implemented UI action on client side and provided a demo that how we can write client side script in UI Action. Below are the implemented points in demo: Please click on below link for demo

https://www.youtube.com/watch?v=Fjg-f1ABQJ4&feature=youtu.be

1. Demo covers implementation of all type of UI action such as context menu, button, list buttons etc.

2. Confirmation box in client script

3. Filling value in the form on the click of button. etc