Sum of Digits (modulo)

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/*
Sum Of Digits:


Create the function **sumOfDigits** that adds individual digits of a number, and returns the sum.

<br>

####Examples:

```js
- INPUT: sumOfDigits(414);
- OUTPUT: 9


- INPUT: sumOfDigits(2913);
- OUTPUT: 15
```

<br>
####Tip:

You may need to use the following methods or operators in your solution:

 - [Math.floor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor) - Rounds any floating point number (decimal) down to closest integer value (non-decimal number).  For example:


>> ```js
>> Math.floor(5.99) ==> 5
>> Math.floor(10.2) ==> 10
>> ```


*/

// Write Code Below:

function sumOfDigits(num){
  var sum = 0;
  while (num > 0){
    sum += num % 10;
    num = Math.floor(num/10);
  }
  return sum;
}
















































































































































describe('sumOfDigits', function(){
	it('sumOfDigits is a function', function(){
		expect(typeof sumOfDigits).toEqual('function');
	});

	it('sumOfDigits returns a number value', function(){
		expect(typeof sumOfDigits(201)).toEqual('number');
	});

	it('adds each individual digit of the number argument and returns the sum', function(){
		expect(sumOfDigits(212)).toEqual(5);
		expect(sumOfDigits(2913)).toEqual(15);
		expect(sumOfDigits(568912)).toEqual(31);	
	});

});

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Sum of Digits (modulo)

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