Nodejs Number Format Pad padLeft(n, str)

Method Source Code

Number.prototype.padLeft = function(n, str) {
    return Array(n-String(this).length+1).join(str||'0')+this;
};

Related

1. padLeft(base, chr)

   Number.prototype.padLeft = function (base, chr) {
       var len = (String(base || 10).length - String(this).length) + 1;
       return len > 0 ? new Array(len).join(chr || '0') + this : this;
   function formatDate(d) {
       return [(d.getFullYear()).padLeft(),
               (d.getMonth() + 1).padLeft(),
               d.getDate().padLeft()].join('-') +
           ' ' +
   ...
   

2. padLeft(base, chr)

   Number.prototype.padLeft = function (base, chr) {
       var len = (String(base || 10).length - String(this).length) + 1;
       return len > 0 ? new Array (len).join(chr || '0') + this : this;
   };
   Array.prototype.compare = function (array) {
       if (!array)
           return false;
       if (this.length != array.length)
           return false;
   ...
   

3. padLeft(base, chr)

   Number.prototype.padLeft = function (base, chr) {
       var len = (String(base || 10).length - String(this).length) + 1;
       return len > 0 ? new Array(len).join(chr || '0') + this : this;
   };
   

4. padLeft(base,chr)

   Number.prototype.padLeft = function(base,chr) {
     var len = (String(base || 10).length - String(this).length)+1;
     return len > 0? new Array(len).join(chr || '0')+this : this;
   };
   

5. padLeft(max, c)

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

6. padRight(max, c)

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

7. padWithDigits(n)

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

8. padZeros(n)

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

9. pad(length)

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