[Webkit-unassigned] [Bug 156001] Web Inspector: Console is unusable on sites with frequent Blocked Messages (theverge.com)

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Feb 13 10:38:59 PST 2017


Michael Bishop <mbish2013 at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |mbish2013 at gmail.com

--- Comment #7 from Michael Bishop <mbish2013 at gmail.com> ---
(In reply to comment #6)
> (In reply to comment #5)
> > Making console only render messages that are in the viewport would solve
> > this as well.
> I don't think that would help here. The issue here is the deluge of
> "blocked" messages makes the console unusable. Having the console be fast
> but still filled with messages would still be unusable in this respect.

Related Chromium thread that resolves exactly this issue in the Chrome fork of webkit: https://bugs.chromium.org/p/chromium/issues/detail?id=17325

The issue stems from cross-domain iframe access attempts that violate the same-origin policy; even when wrapped in a try/catch block, this message is still output. See the following jsfiddle for a simple example showing that the try/catch logic evaluates correctly, but the access attempt is still logged despite the catch. 

There's a lot of interest from the adtech industry in resolving this issue, since it makes debugging in Safari browsers difficult to impossible.

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