Largest / Smallest value in an array

minmax.js

Array.prototype.max = function() {
	var max = this[0];
	var len = this.length;
	for (var i = 1; i < len; i++) if (this[i] > max) max = this[i];
	return max;
}

Array.prototype.min = function() {
	var min = this[0];
	var len = this.length;
	for (var i = 1; i < len; i++) if (this[i] < min) min = this[i];
	return min;
}