函數(shù)1：varfoo=1;functionfnz(){console.log(foo);//undefinedfoo=3;varfoo=2;console.log(foo);//2};fnz();console.log(foo);//1函數(shù)2：varfoo=1;(function(foo){console.log(foo);//1foo=3;varfoo=2;console.log(foo);//2})(foo);console.log(foo);//1
萌新求教！問一下，為什么這兩個函數(shù)的控制臺首次輸出結(jié)果不同。感激不盡
慕田峪9158850
2019-08-17 09:31:34
