// 闭包2道练习题
// 第1道
let foo = function(){
let i = 0;
return function(){
console.log(i++);
}
}
let f1 = foo();
let f2 = foo();
f1();// 0
f2();// 0
f1();// 1
// 第2道
let x = 100;
let y = 200;
let funA = function(x){
x += 1;
let y = 201;
let funB = function(){
console.log(x); // 102
console.log(y); // 201
}
return funB;
}
let f = funA(101);
f();
转载于:https://www.cnblogs.com/yeyuyuni/p/11479181.html
