In javascript how would you change mouse control in games to touchscreen control?

Answer 1

I'm a bit confused by your question but if you're looking for a way to trigger touchscreen events then you need to lookup touch events instead of mouse events.

Example:
-You get the "click" event for mouse clicks and
-You get the "touchstart" event for when the user touches the screen

Look here for more info.
https://www.w3schools.com/jquerymobile/jquerymobile_events_touch.asp

Answer 2

This answers my question, thanks Gav!