Iterator迭代 

 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>
遍历

 

posted @ 2022-03-29 16:59  doremi429  阅读(19)  评论(0)    收藏  举报