javaScript 迭代器

"use strict";

var name = [‘a‘,‘b‘,‘c‘];
var mark = [1, 2, 3];


for(var i of name){
    // console.log(i);
}

var s = new Set([‘A‘, ‘B‘, ‘C‘]);
s.forEach(function (element, sameElement, set) {
    console.log(element);
});


var a = [‘A‘, ‘B‘, ‘C‘];
a.forEach(function (element) {
    console.log(element);
});
var b = [1,2,3];
b.forEach( function (eee) {
    console.log(eee)
});