@@ -0,0 +1,31 @@
+<!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>
@@ -0,0 +1,14 @@
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
+ let arr = [ 1,2,3,'a',4,5,3,4,5,'a' ];