iFrame隔离 [英] iFrame isolation

问题描述

只是想一想，但是在 DIV 上使用 IFRAME 基本上会使该元素与窗口隔离缓慢在 IFRAME 中运行的脚本不会影响其他帧/窗口的方法吗？

Just a thought, but would using an IFRAME over a DIV essentially make that element isolated from the window in a way that slow scripts running in the IFRAME wouldn't affect the other frames/window?

推荐答案

是的，对于第一部分，iframe将排序将窗口与iframe中的脚本隔离开来。但是，仍然可以通过 window.parent 访问父窗口。

Yes for the first part, an iframe will "sort-of" isolate your window from the script in the iframe. However, the parent window can still be accessed via window.parent.

第二部分：不，它不会让它如此慢iframe中的脚本不会影响其他框架/窗口。您的主窗口对象及其子节点都在同一个线程中运行。 JavaScript是单线程的[在这种情况下忽略webworkers，你无法在它们之间传递dom元素]，所以你可以访问parent-window / child-iframe的window对象的唯一原因是因为它们在同一个线程上。

For the second part: No, it will not make it so slow scripts in the iframe won't affect other frames/windows. Your main window object and its child nodes all run in the same thread. JavaScript is single threaded [Ignore webworkers in this case, you can't pass dom elements between them anyway], so the only reason you can access the parent-window/child-iframe's window object is because they're on the same thread.

提供一个简单示例：

• 创建一个名为main.html的页面


• 在该页面中，有一个iframe src =iframe.html


• 下一页到iframe，有一个按钮，你想要的任何文字，我不在乎。


• 在iframe.html中， window.onload = function（）{while（1）{}};


• 访问iframe.html。您会注意到，当您将鼠标光标放在按钮上时，它不会响应/重绘。这是因为浏览器被冻结了。

• Create a page called main.html
• In that page, have an iframe src="iframe.html"
• Next to the iframe, have a button with whatever text you want, I don't care.
• In iframe.html, window.onload = function(){ while(1){} };
• Access iframe.html. You'll notice that when you put your mouse cursor over the button, it doesn't respond/redraw. This is because the browser is frozen.

资料来源：

我也试过这样的多线程。学到了很多东西=）

Source:
I tried getting multithreading like this too. Learned the hard way =)

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