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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 src="../js/2.数据类型.js"></script>
+</body>
+</html>
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+// 基本数据类型
+// undefined number string boolean null
+// 引用数据类型
+// Object
+// 堆内存和栈内存
+
+// 栈内存
+var a = 1;
+var b = "hahaha";
+var c = true;
+// 堆内存
+var ddd = {
+ name:"LiLi",
+ age:"11"
+}
+// 基本数据类型赋值
+var aa =20;
+var bb = aa;
+bb = 15;
+console.log(aa,'aa')
+// 引用数据类型 堆内存
+var mm = {
+ name: '我',
+ age: '11'
+};
+var nn = mm;
+nn.name = "你"
+console.log(mm.name)