Nodejs String Padding Left leftPad(l, c)

Method Source Code

String.prototype.leftPad = function (l, c) { 
   return new Array(l - this.length + 1).join(c || ' ') + this; 
}

Related

1. padLeft(totalLength, value)

   String.prototype.padLeft = function (totalLength, value) {
     if (this.length >= totalLength)
       return this;
     var str = this;
     while (str.length < totalLength)
       str = value + str;
     return str;
   };
   

2. padl(ch, len)

   'use strict';
   String.prototype.padl = function(ch, len) {
       var s = this;
       while (s.length < len) {
           s = ch + s;
       return s;
   };
   

3. padl(ch, len)

   String.prototype.padl = function(ch, len) {
       var s = this;
       while (s.length < len) {
           s = ch + s;
       return s;
   };
   

4. paddingLeft(paddingValue)

   String.prototype.paddingLeft = function(paddingValue)
     return String(paddingValue + this).slice(-paddingValue.length);
   };
   

5. leftPad(character, totalLength)

   String.prototype.leftPad = function (character, totalLength) {
       var s = this;
       while (s.length < totalLength)
           s = character + s;
       return s;