HTML5 Local Storage

function supports_html5_storage() {
  try {
    //if it worked then you can write something to local storage
    localStorage["works"] = "yes";
    return 'localStorage' in window && window['localStorage'] !== null;
  } catch (e) {
    return false;
  }
}

$(document).ready(function() {
  $("#login_button_pressed").click(function(){
    //if not false then it means it worked
    if (supports_html5_storage() !== false) {
      //write key value pairs to local storage
      localStorage["code_stored"] = 1;
      localStorage["title"] = $("#title").val();
      localStorage["lang"] = $("#lang").val();
      localStorage["filter"] = $("#filter").val();
      localStorage["code"] = editor.getValue();
    }
    $("#code_holder").val(editor.getValue());
  });
});