nightfury7 / universalbasics.js

src/ub.numbers.asserts.js

/** global: UB */

var numberFuncs = {
	
	isOdd: function(){
		var val = this;
		return (val % 2) != 0;
	},
	isEven: function(){
		var val = this;
		return (val % 2) === 0;
	},
	isPositive: function(){
		var val = this;
		return (val > 0);
	},
	isNegative: function(){
		var val = this;
		return (val < 0);
	},
	
	isNear: function(target, near = 1){
		var val = this;
		return val >= (target - near) && val <= (target + near);
	},
	
	
	isNaN: function(){
		var val = this;
		return val != val || isNaN(val);
	},
	
	isAny: function(haystacks, asInt = false, fractionalDigits = -1){
		var needle = this;
		
		// return true if any haystack equals the needle
		for (var s = 0, sl = haystacks.length;s<sl;s++){
			var num = haystacks[s];
			
			// simplify value for comparison
			if (asInt) {
				num = int(num);
			}else if(fractionalDigits != -1) {
				num = num.roundToDigits(fractionalDigits);
			}
			
			if (needle == num) {
				return true;
			}
		}
		return false;
	},
	
	/** Checks if the value is within min and max (supporting inclusive/exclusive modes) */
	isWithin: function(min, max, inclusive = true){

This code seems to be duplicated in your project.

		var num = this;
		if (inclusive) {
			if (min > max) {
				return (num >= max && num <= min);
			}
			return (num >= min && num <= max);
		}
		
		if (min > max) {
			return (num > max && num < min);
		}
		return (num > min && num < max);
	},
	isWithinArray: function(arr){
		var slot = this;
		
		// no, if array empty / index negative / index more than last slot
		var len = arr.length;
		if (len === 0 || slot < 0 || slot >= len) {
			return false;
		}
		
		// else yes
		return true;
	},
	/** Checks if the value is > min and < max */
	isBetween: function(min, max){
		var num = this;
		return (num > min && num < max);
	},
	isOutside: function(min, max, inclusive = true){
		var num = this;
		if (inclusive) {
			return num <= min || num >= max;
		}
		return num < min || num > max;
	},
	isFractional: function(){
		var num = this;
		return int(num) != num;
	},
	isInteger: function(){
		var num = this;
		return int(num) == num;
	},
	
	isConsequetive: function(value, value2){
		return value2 == (value - 1) || value2 == (value + 1);
	},
	

	none:null
};

// register funcs
UB.registerFuncs(Number.prototype, numberFuncs);