0 in [,]===false
摘要：
今天看拔赤微博做了一下测试代码var a=[,]; console.log([,]);//[undefined] console.log(0 in [,]);//false console.log(undefined in [,]);//false console.log(0 in [1]);//true console.log([,].length);//1 console.log([].length);//0 console.log(2 in[,,1]);//true console.log(1 in[... 阅读全文
posted @ 2012-03-06 23:58 G.N&K 阅读(343) 评论(0) 推荐(0) 编辑