<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head> <title>js作用域</title></head><body><!--在py中：模块，函数，类有自己的作用域--><script> c='beijing'; f=function(){ var c='shanghai'; function inner(){ console.log('456'+c); } return inner; }; f()(); function bar(){ console.log('123'+c)} f=function(){ c='shanghai'; return bar; }; f()() //运行结果；456shanghai // 123shanghai</script></body></html>
来源：https://www.cnblogs.com/startl/p/12283483.html