Re: [whatwg] Proposal: Write-only submittable form-associated controls.

Yes. Two things about service workers:

1. If you can spin up a service worker, the site is already very much in

2. I have handwavey ideas about ensuring that the FormData object which
would be readable via the Request object in the service worker would retain
the opaque flag. The spec strawman hints at that, but I haven't done the
work to find all the places to monkey-patch.


Mike West <>
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On Wed, Oct 15, 2014 at 4:25 PM, Boris Zbarsky <> wrote:

> On 10/15/14, 10:15 AM, Mike West wrote:
>> `FormData` objects created from forms including these writeonly elements
>> would be "opaque". You could use them to submit an XHR request, but you
>> couldn't read the values directly from script.
> If you're at the point where you can run script on the page, can't you
> spin up a service worker that would capture the data in that XHR?
> -Boris

Received on Wednesday, 15 October 2014 14:28:36 UTC