摘要: let aa = 123; { console.log(aa); // 123 } // ----- let aa = 123; { console.log(aa); // 报错 aa is not defined let aa = 456; } 阅读全文
posted @ 2019-09-24 07:56 飘然离去 阅读(342) 评论(0) 推荐(0) 编辑