src/index.js
function arraySubtraction(arrA, arrB) {
	arrA = arrA.slice();
	for (let i = 0; i < arrB.length; ++i) {
		arrA = arrA.filter(function (value) {
			return value !== arrB[i];
		});
	}
	return arrA;
}
function arraySubtraction(arrA, arrB) {
	arrA = arrA.slice();
	for (let i = 0; i < arrB.length; ++i) {
		arrA = arrA.filter(function (value) {
			return value !== arrB[i];
		});
	}
	return arrA;
}
function arraySubtraction ( arrA , arrB ) { arrA = arrA . slice ( ) ; for ( let i = 0 ; i < arrB . length ; ++ i ) { arrA = arrA . filter ( function ( value ) { return value !== arrB [ i ] ; } ) ; } return arrA ; }
Array subtraction.

@param  {Array} arrA The minuend array.
@param  {Array} arrB The subtrahend array.

@return {Array}      The difference array.
Array subtraction .