[whatwg] keepalive attribute on iframe

Adam Barth w3c at adambarth.com
Thu Apr 12 12:37:15 PDT 2012

We just got finished removing this feature from WebKit because it
caused many security and stability problems.  It turns out that
there's a lot of code in browsers that can't cope with a disconnected
iframe being alive.


On Thu, Apr 12, 2012 at 12:35 PM, Ojan Vafai <ojan at chromium.org> wrote:
> We should add a keepalive attribute to iframes that prevents iframes from
> being unloaded/reloaded when removed from or appended to a document.
> Similarly, a disconnected iframe with keepalive should load. If the
> keepalive attribute is removed from a disconnected iframe, then it should
> unload.
> I'm not terribly happy with the name 'keepalive', but I can't think of
> anything better at the moment.
> As iframes increasingly become the standard way of achieving certain tasks
> (e.g. sandboxing), it's increasingly important to be able to move them
> around in the DOM. Right now, to achieve this sort of keepalive behavior,
> you have to keep the iframe always appended to the document and position it
> absolutely as the document changes.
> Ojan

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