Nodejs Number Calculate plus()

Method Source Code

Number.prototype.plus = function() {
    if ((arguments.length == 0) || (arguments.length > 1) || isNaN(arguments[0]))return;
    return Number(this.toString()) + Number(arguments[0].toString());
};

Number.prototype.minus = function() {
    if ((arguments.length == 0) || (arguments.length > 1) || isNaN(arguments[0]))return;
    return Number(this.toString()) - Number(arguments[0].toString());
};

console.log(2);//w  w w . jav  a2s  .  c  o m
console.log((5).plus(2).minus(3));

Related

1. plus( num )

   Number.prototype.plus = function ( num ) {
     return this + num;
   };
   Number.prototype.minus = function ( num ) {
     return this - num;
   };
   Number.prototype.multiple = function ( num ) {
     return this * num;
   };
   ...
   

2. plus(i)

   function calcfibonacciNumbers() {
     var i,
         nm = [];
     nm[0] = 0;
     for(i=1; i<10; i++) {
       if(i==1) {
         nm[i] = nm[i-1] + 1;
         console.log (nm[i]);
       } else {
   ...
   

3. plus(num)

   Number.prototype.plus = function(num) {
     return this + num
   };
   Number.prototype.minus = function(num) {
     return this - num
   };
   Number.prototype.multi = function(num) {
     return this * num
   debug((5).plus(3).minus(6))
   debug((5).multi((3).plus(2)))
   debug(6..multi(2..plus(2)))
   function add(x) {
     return function(y) {
       return function(z) {
         return x + y + z
   debug(add(2) + '\n\n')
   debug(add(2)(3) + '\n\n')
   debug(add(2)(3)(5) + '\n\n')
   

4. times()

   Number.prototype.times = function () {
       return _.times(this, function (i) {
           return i;
       });
   };
   

5. times()

   Number.prototype.times = function () {
     var a = [];
     var i = -1;
     while (++i < this) {
       a.push(i);
     return a;
   };