历史 Object.preventExtensions() 修订历史： English (US) 中文 (简体) Aug 3, 2014, 7:07:45 AM AlexChao 上一个 Aug 3, 2014, 7:07:20 AM AlexChao 上一个 May 5, 2014, 11:51:37 PM teoli JavaScript/Reference/Global_Objects/Object/preventExtensions Web/JavaScript/Reference/Global_Objects/Object/preventExtensions 上一个 May 5, 2014, 10:11:13 PM teoli JS-ref/Global_Objects/Object/preventExtensions JavaScript/Reference/Global_Objects/Object/preventExtensions 上一个 May 5, 2014, 10:08:56 PM teoli JavaScript/Reference/Global_Objects/Object/preventExtensions JS-ref/Global_Objects/Object/preventExtensions 上一个 Feb 1, 2013, 10:52:45 PM ziyunfei 上一个 Feb 1, 2013, 10:51:18 PM ziyunfei 上一个 May 4, 2012, 5:53:18 AM ziyunfei page display name changed to 'preventExtensions' 上一个 May 4, 2012, 3:35:07 AM ziyunfei 231 words removed 上一个 Feb 13, 2011, 12:35:19 PM undercooled 8 words added, 13 words removed