JavaScript对象及初识面向对象

第一题

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>第一题</title>
</head>
<div id="intro"></div>
<body>
<script>
    var student=new Object();
    student.name="高乐乐";
    student.age="15";
    student.introduction="我叫高乐乐，我是一个初中三年级的学<br>生，我非常喜欢音乐和打篮球";
    student.intro=function () {
        var str="姓名:"+this.name+"<br>年龄:"+this.age+"<br>自我介绍:"+this.introduction;
        document.getElementById("intro").innerHTML=str;
    }
    student.intro();
</script>
</body>
</html>

第二题

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>第二题</title>
</head>
<body>
<div>
    <p>姓名:<span id="name"></span></p>
    <p>年龄:<span id="age"></span></p>
    <p>自我介绍:<span id="intro"></span></p>
    <script>
        function Person(name,age){
            this.name=name;
            this.age=age;
        }
        Person.prototype.showName=function(){
            return this.name;
        }
        Person.prototype.showAge=function () {
            return this.age;
        }
        function Student(name,age,intro){
            Person.call(this,name,age);    //继承属性
            this.intro=intro;
        }
        Student.prototype=new Person();
        Student.prototype.showIntro=function () {
            return this.intro;
        }
        var Student1=new Student("王小明",16,"我是高中一年级的学生，身高1.8米，很帅，我喜欢学习语文和英语。");
        document.getElementById("name").innerHTML=Student1.showName();
        document.getElementById("age").innerHTML=Student1.showAge();
        document.getElementById("intro").innerHTML=Student1.showIntro();
    </script>
</div><br>
<div>
    <p>姓名:<span id="name1"></span></p>
    <p>年龄:<span id="age1"></span></p>
    <p>自我介绍:<span id="intro1"></span></p>
    <script>
        function Person(name1,age1){
            this.name1=name1;
            this.age1=age1;
        }
        Person.prototype.showName1=function(){
            return this.name1;
        }
        Person.prototype.showAge1=function () {
            return this.age1;
        }
        function Student(name1,age1,intro1){
            Person.call(this,name1,age1);    //继承属性
            this.intro1=intro1;
        }
        Student.prototype=new Person();
        Student.prototype.showIntro1=function () {
            return this.intro1;
        }
        var Student1=new Student("黄妞妞",6,"我今年6岁了，非常可爱，马上就可以上小学了，就可能有好多好多的小朋友了。");
        document.getElementById("name1").innerHTML=Student1.showName1();
        document.getElementById("age1").innerHTML=Student1.showAge1();
        document.getElementById("intro1").innerHTML=Student1.showIntro1();
    </script>
</div>
</body>
</html>