How to check if a directive or controller is available in a module using Angularjs

Question

In angularjs, given a module, how do you check if a directive/controller exists given a module.

I have a module and I want to know if some particular directives have bee

Answer 1

Use this code to check if a service exists.

$injector.has('myServiceName')

To check if a directive exists, you must add a Directive suffix after the directive name:

$injector.has('myDirectiveNameDirective')