Nodejs String Padding Left padLeft(ch, n)

Here you can find the source of padLeft(ch, n)

Method Source Code

'use strict';// ww  w  . j a  v  a 2s .  co  m

String.prototype.padLeft = function(ch, n) {
  let myString = '';

  while(myString.length < n - this.length) {
    myString += ch;
  }

  myString += this;

  return myString;
};
String.prototype.padRight = function(ch, n) {
  let myString = this;

  while(myString.length < n) {
    myString += ch;
  }

  return myString;
};

console.log('5'.padLeft('0', 5));
console.log('2'.padRight('.', 2));

Related

  1. lpad(pad_str, length)
    String.prototype.lpad = function(pad_str, length) {
      var str = this;
      while (str.length < length) str = pad_str + str;
      return str;
    
  2. padL(width, pad)
    String.repeat = function(chr, count) {
      var str = "";
      for (var x = 0; x < count; x++) {
        str += chr;
      return str;
    };
    String.prototype.padL = function(width, pad) {
      if (!width || width < 1)
    ...
    
  3. padLeft( length, padding )
    Math.TO_DEGREES = 180 / Math.PI;
    Math.TO_RADIANS = Math.PI / 180;
    String.prototype.padLeft = function( length, padding )
        return Array( length - this.length + 1 ).join( padding || '0' ) + this;
    };
    
  4. padLeft( pPadChar, pTotalLength )
    String.prototype.padLeft = function( pPadChar, pTotalLength )
      return ( pTotalLength <= this.length ) ? this :
        ( pPadChar + this ).padLeft(pPadChar, pTotalLength);
    };
    
  5. padLeft(c, length)
    String.prototype.padLeft = function(c, length) {
        var str = this;
        while (str.length < length)
            str = c + str;
        return str;
    function formatDuration (duration) {
        var totalSeconds = Math.floor(duration);
        var minutes = Math.floor(totalSeconds / 60);
    ...
    
  6. padLeft(ch, n)
    String.prototype.padLeft = function(ch, n) {
      if(this.length < n) {
        var diff = n - this.length;
        var tempArr = this.split('');
        var tmp;
        for(var i = 0; i < diff; i++) {
          tempArr.unshift(ch);
        tmp = tempArr.toString().replace(/,/g, '');
    ...
    
  7. 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;
    ...
    
  8. padLeft(character, length)
    'use strict';
    String.prototype.padLeft = function (character, length)  {
      return character.repeat(Math.max(0, length - this.length)) + this;
    };
    
  9. padLeft(character, length)
    'use strict';
    String.prototype.padLeft = String.prototype.padLeft || function (character, length) {
      return character.repeat(Math.max(0, length - this.length)) + this;
    };