ｗｗｗｗ

"onlyLetterZenkaku": {
// "regex": /(¥w| | | |&)+$/
"regex": /^[^ -~｡-ﾟ]*$/
"alertText": "* 全角で入力してください3"
}

http://winter-tail.sakura.ne.jp/pukiwiki/index.php?JavaScript%A4%A2%A4%EC%A4%B3%A4%EC%2F%C0%B5%B5%AC%C9%BD%B8%BD%A5%D1%A5%BF%A1%BC%A5%F3
http://phpjavascriptroom.com/exp.php?f=include/js/formcheck/isZen.inc&ttl=%E5%85%A8%E8%A7%92%E3%83%81%E3%82%A7%E3%83%83%E3%82%AF