AngularJs Error: $injector:nomod Module is not available

I have got an error while working with AngularJs. Error is:

angular.js:4587 Uncaught Error: [$injector:modulerr] Failed to instantiate module mvcapp due to:

Error: [$injector:nomod] Module 'mvcapp' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.

This error occurs because I have not defined the module.

Solution:

To solve this error I have call the angular module as shown below:

<script>

    var angular = angular.module('mvcapp', []);
</script>

OR

 <script>
 var angular = angular.module('mvcapp');
</script>