Nodejs Number Format Pad leftZeroFill(number, targetLength)

Method Source Code

/**/*  w w  w.  j a  v  a2  s .com*/
 *
 * @param number
 * @param targetLength
 * @returns {string}
 */
function leftZeroFill(number, targetLength) {
    var output = number + '';
    while (output.length < targetLength) {
        output = '0' + output;
    }
    return output;
}

Related

1. padWithDigits(n)

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

2. padZeros(n)

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

3. pad(length)

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

4. LenWithZero(oCount)

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

5. leadingZero(length)

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

6. 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;
   };
   ...
   

7. 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;
   };
   ...
   

8. 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;
   };
   ...
   

9. zf(len)

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