Nodejs Number Value Check isEven()

Method Source Code

/** Returns true if the number is even */
Number.prototype.isEven = function (){
   return this.isOdd() == false;
}

Related

1. isEven()

   Number.prototype.isEven = function(){
     return this % 2 === 0;
   

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);