Candy Game challage on Hacker Rank

gistfile1.js

(function(start) {
  function send(method, data, fun) {
    $.ajax({
      type: method,
      url: '/splash/challenge.json',
      dataType: 'json',
      data: data,
      success: fun
    });
  }
  function __move(count) { // number of moves
    return count % 6;
  }
  var splash = $('#splash-codechecker-insert');
  function display(str) {
    splash.append('<div>' + str + '</div>');
    splash.scrollTop(splash.prop ? splash.prop('scrollHeight') : splash.attr('scrollHeight'));
  }
  function init(n, finish) {
    if (__move(n) != 0) {
      send('post', {n:n, remote: true}, function(response) {
        if (response.current) {
          next_move(response.current, finish);
        }
      });
    } else {
      display(n + ' skip');
      finish();
    }
  }
  function next_move(n, finish) {
    var move = __move(n);
    move = move || 5;
    send('put', {move: move, remote: true}, function(response) {
      if (response.game.current !== 0) {
        setTimeout(function() {
          next_move(response.game.current, finish);
        }, 0);
      } else {
        display(response.game.n + ' ' + (response.game.solved ? 'done' : 'fail'));
        finish();
      }
    });
  }
  function iterate(n) {
      init(n, function() {
        if (n < 2560) {
          setTimeout(function() {
            iterate(++n);
          }, 0);
        }
      });
  }
  iterate(start);
})(7)