限制用户在任何浏览器中刷新和返回 [英] Restrict user to refresh and back,forward in any browser

问题描述

我正在研究评估系统，其中候选人尝试参加考试。因此，呈现问题及其选择的页面是具有 iframe 的页面，其中问题是获取渲染。包含 iframe 的页面包含 JavaScript 计时器。

I am working on an evaluation system, In which candidate attempt for an exam. So the page where a question and its choices are get rendered is a page with iframe , In that questions are get the render. The page which holds iframe contains JavaScript timer.

因此，当问题在浏览器上呈现以限制刷新时，我写了 F5 和 ctrl + F5 阻止代码，以便候选人可以不使用键盘快捷键刷新，但在浏览器窗口中，仍然可以使用刷新按钮或后退按钮。有没有办法禁用它？我知道玩浏览器功能并不是一种好习惯，所以有什么方法可以摆脱这种局面。

So when questions get render on the browser to restrict refresh I have written F5 and ctrl+F5 blocking code so candidate can't refresh using keyboard shortcuts but in a browser window, one can still use refresh button or back button. Is there any way to disable this? I know playing with browser functionality is not good practice, So is there any way to get out of this.

推荐答案

document.ready 我添加了这一行..

on document.ready I added this line..

window.history.forward（-1）

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