Nodejs Number Calculate separatorsseparators()

Method Source Code

// separate a number with commas for thousand-separators
Number.prototype.separators = function separators(){
  var string = this.toString();
  var x      = string.split('.');
  var x1     = x[0];
  var x2     = x.length > 1 ? '.' + x[1] : '';
  var regex  = /(\d+)(\d{3})/;

  while (regex.test(x1)) {
      x1 = x1.replace(regex, '$1' + ',' + '$2');
  }/*w ww. j a va  2  s .co m*/
  return x1 + x2;
};

Related

1. reverse()

   Number.prototype.reverse = function() {
     return parseInt(this.toString().split('').reverse().join(''), 10);
   

2. rnd2()

   Number.prototype.rnd2 = function () {
     return Math.round(this.valueOf() * 100) / 100;
   

3. rotate()

   Number.prototype.rotate = Number.prototype.rotate || function () {
     return Math.floor((this / 10) + ((this % 10) * Math.pow(10, exports.digitLength(this) - 1)));
   };
   

4. safeDivideBy(x)

   Number.prototype.safeDivideBy = function(x) {
       var result = this.valueOf() / x;
       if(result === Infinity) {
           return 0;
       else {
           return result;
   

5. send(method)

   Number.prototype.send = function(method) {
     return this[method].call();
   };
   

6. set(key, value)

   'use strict';
   const assert = require('assert');
   const nan = Symbol('NaN');
   const define = Object.defineProperty;
   Number.prototype[nan] = Object.create(null);
   Number.prototype.set = function (key, value) {
     if (null == this || !isNaN(this)) { return this; }
     const space = this[nan];
     const accessor = {
   ...
   

7. setInCirclesetInCircle(lower, upper)

   Number.prototype.setInCircle = function setInCircle(lower, upper){
     var zahl = this;
     if (lower === upper){
       return lower;
     if (lower > upper){
       var l = lower;
       lower = upper;
       upper = l;
   ...
   

8. setInRangesetInRange(lower, upper)

   Number.prototype.setInRange = function setInRange(lower, upper){
     if (typeof lower === "undefined" || lower === null){
       lower = this;
     if (typeof upper === "undefined" || upper === null){
       upper = this;
     lower = parseFloat(lower) || 0;
     upper = parseFloat(upper) || 0;
   ...
   

9. sigFig(precision)

   'use strict'
   Number.prototype.sigFig = function(precision){
       if( !precision ) precision = 2;
       var d = Math.pow(10, precision);
       return ( parseInt( this.valueOf() * d) / d ).toFixed(precision);
   };