Nodejs Number Type Check isInteger()

Method Source Code

Number.prototype.isInteger = function () {
    "use strict";
    var ans = false;
    if (this % 1 == 0) {
        ans = true;//www. java  2 s  .c om
    }
    return ans;
};

Related

1. isInt()

   Number.prototype.isInt = function() {
     return parseFloat(this) == parseInt(this, 10) && !isNaN(this);
   };
   

2. isInteger()

   Number.prototype.isInteger = function(){
     var ans = false;
     if(this%1==0){
       ans = true;
     return ans;
   };
   

3. isInteger()

   Number.prototype.isInteger = function(){
     var ans = false;
     if(this % 1 == 0){
       ans = true
     return ans;
   

4. isNumber()

   var assert=require('assert');
   var Number=function(number){
       this.number = number;
   Number.prototype.isNumber=function(){
       return isNaN(this.number);
   Number.prototype.isEven=function(){
       return this.number%2==0;
   ...
   

5. isNumber()

   Number.prototype.isNumber = function()
     try
       var value = this.toString();
       value = value.replace(",","");
         if (parseFloat(value)!= value)
           return false;
         else
   ...