迭代器的语法

// function *cit(){
//     yield 1;
//     yield 2;
//     yield 3;
// }
// let it = cit();
// console.log(it.next());
// console.log(it.next());
// console.log(it.next());
// console.log(it.next());

// function *cit(items){
//     for(let i = 0; i<items.length;i++){
//         yield items[i];
//     }
// }
// let it = cit([1,2,3]);
// console.log(it.next())
// console.log(it.next())
// console.log(it.next())
// console.log(it.next())

let items = ["a","b","c"];
let values = items.values();
console.log(values.next());
console.log(values.next());
console.log(values.next());
console.log(values.next());