Huffman table expansion

Huffman.js

//Huffman table expansion.

var bits = [ 0, 2, 3, 1, 1, 1, 1 ];
var codes = [ 3, 4, 1, 2, 5, 0, 6, 7, 8 ];

//The html table output.

var html = "<table border=\\\"1\\\">";
html += "<tr><td>Bits</td><td>Code</td><td>Length</td></tr>";

//Begin creating the bit expansion for each code.

var bit = 0, pos = 0;

for( var i = 0; i < bits.length; i++ )
{
  for( var i2 = 0; i2 < bits[i]; i2++ )
  {
    html += "<tr><td>" + bit.toString(2).padStart( i + 1, "0" ) + "</td><td>" + codes[pos] + "</td><td>" + ( i + codes[pos] + 1 ) + "</td></tr>";
    
    bit += 1; pos += 1;
  }

  bit <<= 1;
}

html += "</table>";

document.write( html );