网站介绍：function add() { var counter = 0; return counter += 1;} add();add();var x = add(); //结果为1每次调用add函数都将counter清零了var add = (function () { var counter = 0; return function () {return counter += 1;}})(); add();add();var x = a.._var counter =0 function add (){213return counter =1;} add (); add (); ad
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- 链接标题：JavaScript学习(四) -- 闭包_var counter =0 function add (){213return counter =-CSDN博客
- 所属网站：blog.csdn.net
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