Once the user is on my page, I do not want him to refresh the page.
Anytime, the user hits F5 or refresh button on top. He should get an alert saying
您不能刷新页面.
此外，如果用户打开一个新选项卡并try 访问前一个选项卡中的相同URL，他应该会收到警告
You cannot open same page in 2 tabs
Anyway I can do this using JavaScript or jQuery? Point one is really important.
#1 can be implemented via window.onbeforeunload.
For example:
<script type="text/javascript">
window.onbeforeunload = function() {
return "Dude, are you sure you want to leave? Think of the kittens!";
}
</script>
The user will be prompted with the message, and given an option to stay on the page or continue on their way. This is becoming more common. Stack Overflow does this if you try to navigate away from a page while you are typing a post. You can't completely stop the user from reloading, but you can make it sound real scary if they do.
#2 is more or less impossible. Even if you tracked sessions and user logins, you still wouldn't be able to guarantee that you were detecting a second tab correctly. For example, maybe I have one window open, then close it. Now I open a new window. You would likely detect that as a second tab, even though I already closed the first one. Now your user can't access the first window because they closed it, and they can't access the second window because you're denying them.
事实上，我的银行的在线系统真的很努力地做第二件事，上面描述的情况一直都在发生.我通常必须等到服务器端会话到期后才能再次使用银行系统.