历史 visibilitychange 修订历史: English (US) 中文 (简体) Jan 24, 2015, 6:48:48 PM ziyunfei Mozilla_event_reference/visibilitychange Web/Events/visibilitychange 上一个 Dec 31, 2012, 8:12:41 PM ziyunfei Dec 31, 2012, 8:10:38 PM ziyunfei