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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- let s1 = new Map();
- console.log(s1);
- // xxx.set("属性名","属性值")
- s1.set('names','张三');
- s1.set('age',18);
- console.log(s1);
- // xxx.get("属性名")
- console.log(s1.get('names'))
- // 长度 xxx.size
- console.log(s1.size)
- // 删除 xxx.delete("属性名") 成功 true
- // console.log(s1.delete("age"))
- // 全部删除 xxx.clear
- // console.log(s1.clear());
- // keys 可枚举的键值对的属性
- for(var i of s1.keys()) {
- console.log(i)
- }
- // entries 可枚举的键值对
- for(var i of s1.entries()) {
- console.log(i)
- }
- // values 可枚举的键值对属性值
- for(var i of s1.values()) {
- console.log(i)
- }
- </script>
- </body>
- </html>
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