Nodejs Number Format Pad zeroPad(len)

Method Source Code

/**/*from  w  ww  .j a v a 2 s  .com*/
 * Zero pad a number out to a specified length.
 * @method external:Number#zeroPad
 * @param {Number} [len=2] The length of the padded string.
 * @returns {String}
 */
Number.prototype.zeroPad = function (len) {
  var s = String(this);
  var c = '0';
  len = len || 2;

  while (s.length < len) {
    s = c + s;
  }

  return s;
};

Related

1. pad(length)

   Number.prototype.pad = function pad(length) {
     var str = '' + this;
     while (str.length < length) {
       str = '0' + str;
     return str;
   };
   

2. LenWithZero(oCount)

   Number.prototype.LenWithZero = function(oCount) {
       var strText = this.toString();
       while (strText.length < oCount) {
           strText = '0' + strText;
       return strText;
   };
   

3. leadingZero(length)

   Number.prototype.leadingZero = function(length) {
       return ('0'+this).slice(-length);
   

4. leftZeroFill(number, targetLength)

   function leftZeroFill(number, targetLength) {
       var output = number + '';
       while (output.length < targetLength) {
           output = '0' + output;
       return output;
   

5. leftZeroPad(numZeros)

   Number.prototype.leftZeroPad = function(numZeros) {
           var n = Math.abs(this);
           var zeros = Math.max(0, numZeros - Math.floor(n).toString().length );
           var zeroString = Math.pow(10,zeros).toString().substr(1);
           if( this < 0 ) {
                   zeroString = '-' + zeroString;
           return zeroString+n;
   };
   ...
   

6. zeropad(n)

   Number.prototype.zeropad = function(n) {
      var str = "" + this;
      var len = n - str.length;
      var pad = "";
      while (len-- > 0) {
         pad += "0";
      return pad + str;
   };
   ...
   

7. zf(len)

   Number.prototype.zf = function(len){
       if(isNaN(len)) len = 2;
       return (this + '').pad(len, '0');
   };
   

8. zfill(length)

   Number.prototype.zfill = function(length) { 
       var str = this.toString();
       if (str.length < length) {
           for(var i = 0; i < length - str.length; i++) str = '0' + str
       return str;
   };
   

9. zfill(n)

   Number.prototype.zfill = function (n) {
       var str = String(this);
       while (str.length < n) {
           str = "0" + str;
       return str;
   };