Nodejs String Padding pad($char, $length)

Method Source Code

String.prototype.pad = function($char, $length) {
    var $result = this;
    //from  ww  w .j  a  v a  2 s.  c om
    while ($result.length < $length) {
        $result = $char + $result;
    }
    
    return $result;
}

Related

1. pad( digits )

   String.prototype.pad = function( digits ) {
       var x = this;
       while ( x.length < digits ) {
           x = '0' + x;
       return x;
   };
   

2. pad(l, r)

   String.prototype.pad = function(l, r) {
     if (r === undefined) {
       r = l
       if (!(this.substr(0, 2) == "0x" || /^\d+$/.test(this)))
         l = 0
     var ret = this.bin();
     while (ret.length < l)
       ret = "\0" + ret
   ...
   

3. pad(l, r)

   String.prototype.pad = function(l, r) {
     if (r === undefined) {
       r = l
       if (!(this.substr(0, 2) == "0x" || /^\d+$/.test(this)))
         l = 0
     var ret = this.bin();
     while (ret.length < l)
       ret = "\0" + ret
   ...
   

4. pad(l, s, t)

   String.prototype.pad = function(l, s, t){
     return s || (s = " "), (l -= this.length) > 0 ? (s = new Array(Math.ceil(l / s.length)
       + 1).join(s)).substr(0, t = !t ? l : t == 1 ? 0 : Math.ceil(l / 2))
       + this + s.substr(0, l - t) : this;
   };
   

5. pad(l, s, t)

   String.prototype.pad = function(l, s, t){
       return s || (s = " "), (l -= this.length) > 0 ? (s = new Array(Math.ceil(l / s.length)
           + 1).join(s)).substr(0, t = !t ? l : t == 1 ? 0 : Math.ceil(l / 2))
           + this + s.substr(0, l - t) : this;
   };