使用正则表达式：
if (/^(something|nothing|anything|everything)$/.exec('jesus')) alert('Who cares?');或相反：
/^(something|nothing|anything|everything)$/.exec('jesus')||alert('Who cares?');[更新]更短；-)
if (/^(some|no|any|every)thing$/.exec('jesus')) alert('Who cares?');
