Lisp like javascript

gistfile1.txt

var range = function(a, b) {
	var array,
		direction;

	array = new Array();
	direction = ( b - a ) / Math.abs( b - a );

	var i;
	for ( i = a; i <= b; i += direction )
		array.push( i );

	return array;

}

var sum = function( array ) {
	var total,
		argIsArray;

	argIsArray = array instanceof Array;

	if( ! argIsArray )
		return NaN;

	total = 0;

	var i;
	for ( i = 0; i < array.length; i++ )
		total += array[ i ];

	return total;
}

// the crux
console.log(sum(range(1, 10)));