JS技术(4)---定义对象,添加函数,改变对象属性

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<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>Title</title></head><body><script type="application/javascript">    //1、构造    function person(firstname, lastname, age, eyecolor) {        this.firstname = firstname;        this.lastname = lastname;        this.age = age;        this.eyecolor = eyecolor;        this.changeName = changeName;        function changeName(name) {            this.lastname = name;        }    }    //2、定义    var myMother = new person("Steve", "Jobs", 48, "green");    //3、调用函数    myMother.changeName("kkkk")    //4、遍历打印属性    for (x in myMother) {        document.write(myMother[x] + "<br/>");    }</script></body></html>