1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>Title</title>
6
7 <script>
8
9 //ES6 Map
10 //学生成绩，学生名字
11 var arr = [3,4,5];
12 arr.name = "213";
13 for (let x of arr){
14 console.log(x);//会把name属性遍历出来
15 }
16
17 let map = new Map([['tom',23],['asd',123],['zz',12]])
18
19 // 遍历map
20 for (let x of map){
21 console.log(x);
22 }
23 //Set:无序不重复集合
24 var set = new Set([1,2312,33,33,42,42]);
25
26 //遍历set
27 for (let x of set){
28 console.log(x);
29 }
30
31
32 </script>
33 </head>
34 <body>
35
36 </body>
37 </html>
