Map和Set集合

ES6

 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 
12         let map = new Map([['tom',23],['asd',123],['zz',12]])
13         let name = map.get('tom');
14         map.set('adim',12);//添加或修改
15 
16         console.log(name);
17         console.log(map);
18         map.delete("tom");//删除
19 
20         //Set:无序不重复集合
21 
22 
23         var set = new Set([1,2312,33,33,42,42]);
24         set.add(2); //添加
25         console.log(set);
26         set.delete(2);//删除
27         console.log(set);
28         console.log(set.has(33)); //是否含有某个元素
29     </script>
30 </head>
31 <body>
32 
33 </body>
34 </html>
Map和Set

 

posted @ 2022-03-29 16:40  doremi429  阅读(7)  评论(0)  编辑  收藏  举报