Nodejs String Padding Left padLeft(count, character)

Method Source Code

String.prototype.padLeft  = function(count, character) {
    var result = "";

    if (character === undefined) {
        character = " ";
    }/*from  ww w.  j a v a2  s  .  c  om*/

    count -= this.length;

    if (count < 0) {
        count = 0;
    }

    var i;
    for (i = 0; i < count; i += 1) {
        result += character;
    }

    result += this;

    return result;
};

Related

1. padLeft(char, length)

   String.prototype.padLeft = function (char, length) {
       var len = this.length;
       if (len === 0) return '';
       var str = this;
       while (len < length) {
           str = char + str;
           len++;
       return str;
   ...
   

2. padLeft(character, length)

   'use strict';
   String.prototype.padLeft = function (character, length)  {
     return character.repeat(Math.max(0, length - this.length)) + this;
   };
   

3. padLeft(character, length)

   'use strict';
   String.prototype.padLeft = String.prototype.padLeft || function (character, length) {
     return character.repeat(Math.max(0, length - this.length)) + this;
   };
   

4. padLeft(count, ch)

   String.prototype.padLeft = function(count, ch) {
        var char = ch || ' ';
        var result = new Array(count + 1).join(char);
        return result + this;
    };
   

5. padLeft(count, character)

   String.prototype.padLeft = function (count, character) {
       if (typeof (character) === "undefined") character = " ";
       return this.length <= count ? Array(count + 1 - this.length).join(character) + this : this.toString();
   

6. padLeft(count, character)

   String.prototype.padLeft = function (count, character) {
       if (typeof (character) === "undefined") {
           character = " ";
       return this.length <= count ? Array(count + 1 - this.length).join(character) + this : this.toString();
   };
   

7. padLeft(count, character)

   String.prototype.padLeft = function(count, character) {
     var ch = character || ' ';
     var result = '';
     for (var i = 0; i < count; i++) {
       result += ch;
     };
     result += this;
     return result;
   

8. padLeft(count, character)

   String.prototype.padLeft = function(count, character) {
       character = character || ' ';
       return character.repeat(count) + this.toString();
   };
   

9. padLeft(length, char)

   String.prototype.padLeft = function(length, char) {
     return Array(length - this.length + 1).join(char || " ") + this;
   };