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<head><meta charset="UTF-8"><title>04_原型链_属性问题</title>
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1. 读取对象的属性值时: 会自动到原型链中查找
2. 设置对象的属性值时: 不会查找原型链, 如果当前对象中没有此属性, 直接添加此属性并设置其值
3. 方法一般定义在原型中, 属性一般通过构造函数定义在对象本身上
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<script type="text/javascript">function Person(name, age) {this.name = name;this.age = age;}Person.prototype.setName = function (name) {this.name = name;}Person.prototype.sex = '男';var p1 = new Person('Tom', 12)p1.setName('Jack')console.log(p1.name, p1.age, p1.sex)p1.sex = '女'console.log(p1.name, p1.age, p1.sex)var p2 = new Person('Bob', 23)console.log(p2.name, p2.age, p2.sex)</script>
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