Nodejs Number Format Pad leadingZero(length)

Method Source Code

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

Related

1. padRight(max, c)

   Number.prototype.padRight = function(max, c) {
     return this.toString().padRight(max, c || '0');
   };
   

2. padWithDigits(n)

   Number.prototype.padWithDigits = function (n) {  
     var txt = this.toString();
     while(txt.length < n) {
       txt = '0' + txt;
     return txt;  
   };
   

3. padZeros(n)

   Number.prototype.padZeros = function(n){
     return this.toString().padZeros(n);
   };
   

4. pad(length)

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

5. LenWithZero(oCount)

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

6. leftZeroFill(number, targetLength)

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

7. 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;
   };
   ...
   

8. zeroPad(len)

   Number.prototype.zeroPad = function (len) {
     var s = String(this);
     var c = '0';
     len = len || 2;
     while (s.length < len) {
       s = c + s;
     return s;
   };
   ...
   

9. 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;
   };
   ...