REGEXP

$t.REGEXP_IS_IPAD

从 UA 判断是否为 IPad

获取 UA：window.navigator.userAgent

$t.REGEXP_IS_IPAD.test('Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5 Android N1') // true