Angular external use JS to invoke the function method or variable usage example in angular controller _angularjs

The example in this article describes the function methods or variables that are used to invoke the angular controller outside the angular using JS. Share to everyone for your reference, specific as follows:

<! DOCTYPE html>  

The effect is shown in the following image before clicking the "Call" button:

After clicking on the "Call" button, the effect is shown in the following image:

I hope this article will help you to Angularjs program design.