‘too much time spent in unload handler’ – chrome error
Bumped into this error while invoking a webcal link (and staying on the same page). Apparently clicking the link starts a sequence that eventually fires onbeforeload, which in its turn causes the error.
Reports of this bug first popped in search near the end of February January and probably related to a recent chrome build (Chrome Version : 4.0.249.89, Official Build 38071). After letting the issue for few days, I did some extra searching today and came up with a tweet by @rvdavid:Held up by a “Too much time spent in unload handler.” error on #chromium. in trying to find solutions, All I find “unconfirmed” #bug reports. Replying to the tweet led me to a possible solution by the Chrome team. As far as I understand we may see the solution already merged into one of the next official releases. Will update.
Clearing an input of type=’file’
For obvious reasons, one cannot clear an input of type ‘file’ (in fact, the ‘value’ cannot be changed at all). Previous attempts to achieve this using setAttribute or direct access to the ‘value’ property has failed.
Our guys @ the UI team has found a useful workaround:
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function resetUploadControl(control)
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{
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var parent = control.parentNode;
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parent.removeChild(control);
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var tempForm = document.createElement("form");
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tempForm.appendChild(control);
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tempForm.reset();
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tempForm.removeChild(control);
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tempForm = null;
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parent.appendChild(control);
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}
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First, grab the elements’ parent, remove the control from it and append it to a temporary form. Input elements of type file can only be cleared by resetting the form they are part of, thus the temp form.
After resetting (and achieving our empty-valued input goal), re-append the control to its original parent and destroy the temp form. Mission accomplished! :)
Credit goes to Ori Roniger & Vadim Kononov
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