摘要: 1. 赋值 var o = anything || ' anythig is undefined'; // o 首先会取值 anything, 但如果anything 未定义, 则会取值 'anything is undefined'. var o = anything && 'anything i 阅读全文
posted @ 2013-08-05 11:11 Yu 阅读(253) 评论(0) 推荐(0)