- content_for(:title) { 'Sudoku' }

h1 Sudoku
#board

script type="text/javascript" src="/sudoku.js"
javascript:
  document.addEventListener("DOMContentLoaded", function() {
    sudoku = new Nikoli.Sudoku(document.getElementById('board'));

    xmlhttp = new XMLHttpRequest();
    xmlhttp.open("GET", "#{url('/data/sudoku/gnome-sudoku_easy.json')}");

    xmlhttp.addEventListener('load', function(evt) {
      sudoku.generate(JSON.parse(evt.target.responseText)) })
    xmlhttp.send();
  });