Js 实现每次调用一个函数自动加1

var getId = (function () {
  
   // "use strict";

    var i = 0;
    return function () {
        return ++i;
    };
    
})();

console.log(getId()); 	//1
console.log(getId());	//2

原文链接: https://blog.csdn.net/weixin_43971228/article/details/89146656?ivk_sa=1024320u