Call external js file function in Angular js controller

Question

I have the external js file which has more functions.

I need to call these functions from angular controller.

For example: external.js

Answer 1

EDIT: gave wrong answer, my bad. the following example works.

your external file should like this:

var doSomething = (function () {
  "use strict";
   return {
      test: (function () {
        return 'test';
      }()),
      test2: (function () {
        return console.log('test 2');
      })
   };
}());

and in your controller you call your scripts function:

console.log(doSomething.test);

or

doSomething.test2();

i learned something too, thanks ;)