摘要: No1,变量提升。No2,函数声明提升(全部升上去) (function(a){ //var a; //var a = 100; //var a = fn var a=10; function a(){}; console.log(a); }(100)); var a = 10; function 阅读全文
posted @ 2020-08-21 22:35 howareyou! 阅读(110) 评论(0) 推荐(0)