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Window Addeventlistener Error


more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed It’d be nice to force such people to upgrade, but in the meantime we have one more trick up our sleeves. JavaScript Copy script var sImg=''; function fnLoadFirst(){ oContainer.innerHTML=sImg; oStub.onerror=fnLoadFail1; oStub.src=""; oStub.style.display="block"; } function fnLoadFail1(){ oStub.alt="Image failed to load."; return true; } http://3cq.org/script-error/window-script-error.php

JavaScript Copy script window.onerror=fnErrorTrap; function fnErrorTrap(sMsg,sUrl,sLine){ oErrorLog.innerHTML="An error was thrown and caught.
"; oErrorLog.innerHTML+="Error: " + sMsg + "
"; oErrorLog.innerHTML+="Line: " + sLine + "
"; oErrorLog.innerHTML+="URL: " + sUrl This wicked handler swallows mistakes in the code and pretends all is well. As for the errors, this is about error handling, correct? This one works everywhere: window.onerror = function(message, lineno, filename) { } But of course I don't want to use this. http://blog.bugsnag.com/js-stacktraces/

Window.onerror Javascript

If you don't have that luxury, the only other thing I can think of is to have the IT folks set up a group policy to enforce it globally. This lets existing code continue to work, but adds high-quality exception tracking. var addEventListener = window.EventTarget.prototype.addEventListener; window.EventTarget

x is undefined url: document.location.href, stack: ex.stack // stacktrace string; remember, different per-browser! }; $, , , script and