父页和子页的关系
引用“浅析浏览器的跨域安全问题”一文的代码：
<script>
x=window.open("about:blank");
x.location="http://www.163.com" //访问163网站
setTimeout(function(){
x.location="http://127.0.0.1";
},5000) //5秒后重定向到127.0.0.1
</script>
x=window.open("about:blank");
x.location="http://www.163.com" //访问163网站
setTimeout(function(){
x.location="http://127.0.0.1";
},5000) //5秒后重定向到127.0.0.1
</script>
再次使用applet实现以上效果：
public class writeFile extends Applet implements Runnable{
private Thread thread = null;
private String url;
public void run()
{
try {
this.getAppletContext().showDocument(new URL(url),"kxlzx");
} catch (MalformedURLException e) {
}
}
public void start()
{
try {
url = "http://www.sohu.com";
thread = new Thread(this);
thread.run();
thread.sleep(5000);
url = "http://www.sina.com";
thread = new Thread(this);
thread.run();
} catch (Exception e) {
}
}
}
private Thread thread = null;
private String url;
public void run()
{
try {
this.getAppletContext().showDocument(new URL(url),"kxlzx");
} catch (MalformedURLException e) {
}
}
public void start()
{
try {
url = "http://www.sohu.com";
thread = new Thread(this);
thread.run();
thread.sleep(5000);
url = "http://www.sina.com";
thread = new Thread(this);
thread.run();
} catch (Exception e) {
}
}
}
IE和FF都执行成功，子窗口先访问了sohu，过5秒，访问了sina，子页将永远受制于父页。
