Bookmarkletについて

alert

javascript:(function(){alert('Hello, Bookmarklet!');void(0);})();

javascript:(function(){alert(new Date().getFullYear() + '-' + ('0' + (new Date().getMonth() + 1)).slice(-2) + '-' + ('0' + new Date().getDate()).slice(-2));void(0);})();

name, scoreに文字列を追加

javascript:(function(){document.getElementById("name").value = "name";document.getElementById("score").value = "123";void(0);})();