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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=\, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- // var m1 = new Map();
- // m1.set("a",1);
- // m1.set("str","hello");
- // m1.set(1,"world");
- // m1.set("str","你好")
- // m1.delete("a")
- // // m1.clear();
- // console.log(m1);
- // console.log(m1.get("str"));
- // console.log(m1.has("str"));
- // console.log(m1.size);
- // for(let val of m1.values()){
- // console.log(val);
- // }
- var m2 = new WeakMap();
- m2.set({a:1},"hello");
- console.log(m2)
- </script>
- </body>
- </html>
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