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@@ -0,0 +1,40 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+<body>
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+ <script>
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+ /**
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+ * 原型链继承
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+ * 实现：
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+ * 子类的原型 = 父类的实例
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+ * 实例顺着父类的原型链查找父类的属性和方法
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+ * 优点:
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+ * 写法简单
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+ * 缺点：
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+ * 父类不能进行传参
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+ * 父类中 引用数据类型 共享实例 若发生修改 则全部修改
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+ */
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+ function Person() {
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+ this.name = '图图';
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+ this.age = 3;
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+ this.list = ['吃饭','睡觉','打豆豆'];
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+ }
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+ Person.prototype.say = function() {
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+ console.log("你好")
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+ }
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+
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+ function Child() {}
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+
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+ Child.prototype = new Person();
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+ let c1 = new Child();
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+ let c2 = new Child();
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+ c2.list.push("12");
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+ console.log(c1,'c',c1.list)
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+ console.log(c2,'c',c2.list)
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+ </script>
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+</body>
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+</html>
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zheng