Can anyone help out in this

 <script>
      var x = 5;
      var i=1;
      while (i<= x) 
      {
        var k = x;
        while (k > i)
        {
 
          document.write("&nbsp;");
          k--;
         }
        
        var j=1;
        while (j <= i) 
        {
          document.write("& ");
          j++;
        }
 
         
 
        document.write("<br/>");
        i++;
      }
    </script>