Nodejs String Padding Left leftPad(character, totalLength)

Method Source Code

/**/*from   w  w  w.ja  v  a 2s  .c  o  m*/
 * Padding character to string until it reaches given length
 */
String.prototype.leftPad = function (character, totalLength) {
    var s = this;
    while (s.length < totalLength)
        s = character + s;
    return s;
}

Related

1. padLeft(size, prefix)

   (function(){
   String.prototype.padLeft = function(size, prefix) {
       prefix = prefix || " ";
       var s = ''+this;
       while (s.length < size) s = prefix + s;
       return s;
   };
   Math.randInt = function(min, max){
     return Math.floor(Math.random() * (max - min + 1)) + min;
   ...
   

2. 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;
   };
   

3. padl(ch, len)

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

4. padl(ch, len)

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

5. paddingLeft(paddingValue)

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

6. leftPad(l, c)

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