Your solutions should be placed inside app/exercise4.js file(inside window.exercise4 object).
This is a string prototype. It returns the number of vowels in the string (case insensitive).
This is an array prototype. It returns the string of elements (separated by ' ') from the array.
This is a number prototype. It returns the number increased by
This is a number prototype. It returns true when the number is between
b, otherwise it returns false. When
b is less than
a it returns undefined.
To run jshint:
To start developing unit tests
To run tests and static analysis