Nodejs Number Format Pad pad

Method Source Code

/**/*ww  w .  j  av  a 2  s . c om*/
 * @fileOverview This file contains new methods for the Number class
 */
/**
 * @name Number
 * @class A built-in class for numeric data which handles integers and floats within itself.
 */

/**
 * Return a padded string for the number.
 * 
 * @param {Number} len The minimum length of the string to return
 * @param {String} [chars="0"] Characters to use when padding the number
 * @param [radix=10] The radix to use when turning the number into a string
 */
Number.prototype.pad =
Number.prototype.padLeft = function pad(len, chars, radix) {
   return this.toString(radix || 10).padLeft(len || 0, chars || "0");
};

Related

1. pad($char, $length)

   Number.prototype.pad = function($char, $length) {
       return (this + "").pad($char, $length);
   

2. pad()

   Number.prototype.pad = function () {
     if ( this < 10 ) {
       return '0' + this;
     return this;
   

3. pad()

   Number.prototype.pad = function() {
       var x = this.toString();
       while(x.length < 2) {
           x = "0" + x;
       return x;
   

4. pad(intPad)

   Number.prototype.pad = function(intPad) {
     if (this<0) {
       return "-" + (this-this*2).pad(intPad);
     var newThis = this.toString();
     var reqPad = intPad - newThis.length;
     if (reqPad > 0) {
       return '0000000000000000'.substr(0,reqPad) + this;
     return newThis;
   };