运用apply方法实现javascript中的对象继承
发布时间:2023-08-26 14:38:44 所属栏目:教程 来源:
导读:代码如下:
<script type="text/javascript">
//使用apply方法实现对象继承
function Parent(username) {
this.username = username;
this.sayHello = function() {
alert(this.username);
<script type="text/javascript">
//使用apply方法实现对象继承
function Parent(username) {
this.username = username;
this.sayHello = function() {
alert(this.username);
代码如下: <script type="text/javascript"> //使用apply方法实现对象继承 function Parent(username) { this.username = username; this.sayHello = function() { alert(this.username); } } function Child(username, password) { Parent.apply(this, new Array(username)); //和下面一样 //Parent.apply(this, [username]); this.password = password; this.sayWorld = function() { alert(this.password); } } var parent = new Parent("zhangsan"); var child = new Child("lisi", "123"); parent.sayHello(); child.sayHello(); child.sayWorld(); </script> (编辑:聊城站长网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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