Nodejs Number Value Check isOdd()

Method Source Code

/** Returns true if the number is odd */
Number.prototype.isOdd = function () {
   return new Boolean(this.valueOf()&1);
}

Related

1. isEven()

   Number.prototype.isEven = function (){
     return this.isOdd() == false;
   

2. isEven()

   Number.prototype.isEven = function () { return (this % 2) === 0; }; 
   Number.prototype.isOdd = function () { return Math.abs(this % 2) === 1; };
   Array.prototype.isEmpty = function () { return this.length === 0; };
   Array.prototype.hasItem = function (item) { return this.indexOf(item) >= 0; };
   Array.prototype.remove = function (item) {
     var index = this.indexOf(item);
     if (index >= 0)
       this.splice(index, 1);
   };
   ...
   

3. isEven()

   Number.prototype.isEven = function () {
       if (this % 2 === 0) {
           return true;
       } else return false;
   };
   function sumFibs(num) {
       var sumFibArr;
       var fibArray = fibArrayGenerator(num);
       fibArray = fibArray.filter(function (value) {
   ...
   

4. isEven()

   window.log = console.log;
   function fib(num) {
     return (num < 3) ? num : fib(num - 1) + fib(num - 2);
   Number.prototype.isEven = function() {
     return (this % 2 === 0) ? true : false;
   };
   function fibSum() {
     var i = 1,
   ...
   

5. isEven()

   Number.prototype.isEven = function() {
       return !(this % 2);
   

6. isOdd()

   function isOdd(num) {
     if (typeof num === 'number') {  
       return ((num % 2) === 1) || ((num % 2) === -1) ? true : false;
     else {
       throw 'Not a number';
   console.log(isOdd(3)); 
   ...
   

7. isOdd()

   Number.prototype.isOdd = function() {
       return !!(this % 2);
   

8. odd()

   Number.prototype.odd = function () {
     return (this % 2 == 1)
   

9. odd()

   Number.prototype.odd = function(){
     return ( ( this % 2 ) == 1 )