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js 自己试验 创建对象例子
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js 創(chuàng)建對(duì)象例子
<!DOCTYPE html>
<html><head><meta charset="utf-8"><title></title><script>function login() {alert(this.username + " - login");}function CreateUser(username, password) {
// var user = new Object;this.username = username;this.password = password;this.show = function() {alert("username = " + this.username + " / password = " + this.password);}this.changePassword = function(password) {this.password = password;}this.login = login;
// user.prototype.resetPassword = function () {
// this.password = "123456";
// }
// return user;
// 如果將user的聲明取消掉,直接用this,就會(huì)自動(dòng)創(chuàng)建對(duì)象,并且最后自動(dòng)返回對(duì)象。}var u;var u2 = new CreateUser("tom","coco");function testCreate(username, password) {u = new CreateUser(username, password);}function testChangePassword(password) {u.changePassword(password);}function testShow() {u.show();u2.show();}function testLogin() {u.login();u2.login();}function testResetPassword() {alert("暫時(shí)停用");u.resetPassword();u2.resetPassword();}</script></head><body>創(chuàng)建user對(duì)象<br /><button type="button" οnclick="testCreate(prompt('input username'),prompt('input password'))">testCreate</button><br /><br /><br />更改密碼<br /><button type="button" οnclick="testChangePassword(prompt('input password'))">testChangePassword</button><br /><br /><br />顯示user信息<br /><button type="button" οnclick="testShow()">testShow</button><br /><br /><br />user登陸<br /><button type="button" οnclick="testLogin()">testLogin</button><br /><br /><br />user重設(shè)密碼123456(prototype注釋)<br /><button type="button" οnclick="testResetPassword()">resetPassword</button></body>
</html>
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