摘要: 1. !! meansCoercesoObjectto boolean. If it was falsey (e.g. 0,null,undefined, etc.), it will befalse, otherwise,true.2. check what device it isfunctio... 阅读全文
posted @ 2015-04-28 08:34 Garret_lee 阅读(144) 评论(0) 推荐(0) 编辑