javascript:(function save(data, filename) { if(!window.location.href.endsWith("natural_number_game/")){ alert("To load saved game, go to the main page first!"); return;  }; var file = new Blob([JSON.stringify(JSON.parse(data), null, 2)]); var a = document.createElement("a"), url = URL.createObjectURL(file); a.href = url; a.download = filename; document.body.appendChild(a); a.click(); setTimeout(function() { document.body.removeChild(a); window.URL.revokeObjectURL(url);  }, 0);  })(window.localStorage.getItem("Natural number game-1-savedGameData"), "nngsave.json");

{ const files = uploader.files; if (files.length) { const reader = new FileReader(); reader.addEventListener('load', () => { uploader.parentNode.removeChild(uploader); resolve(reader.result); }); reader.readAsText(files[0]); }; }); document.body.appendChild(uploader); document.getElementById("root").style.display = 'none'; }; }); })().then(text => { console.log(text); if(text){ window.localStorage.setItem("Natural number game-1-savedGameData", text); window.location.reload(); }; });">

javascript:(function(){ return new Promise((resolve) => { if(!window.location.href.endsWith("natural_number_game/")){ alert("To load saved game, go to the main page first!"); resolve("");  }else{ const uploader = document.createElement('input'); uploader.type = 'file'; uploader.style.position = 'relative'; uploader.addEventListener('change', () => { const files = uploader.files; if (files.length) { const reader = new FileReader(); reader.addEventListener('load', () => { uploader.parentNode.removeChild(uploader); resolve(reader.result);  }); reader.readAsText(files[0]);  };  }); document.body.appendChild(uploader); document.getElementById("root").style.display = 'none';  };  });  })().then(text => { console.log(text); if(text){ window.localStorage.setItem("Natural number game-1-savedGameData", text); window.location.reload();  };  });