Is there a way to determine if a image path leads to an actual image, Ie, detect when an image fails to load in Javascript.  For a web app, I am parsing a xml file and dynamically creating HTML images from a list of image paths. Some image paths ma...
What sort of situations could cause this handler to be called? I'm not finding any instance where this method throws an error.  I tried with the device offline, I get xmlHttpRequest.status = 0 but no error.  Question is what sort of situations ca...
I have a site that loads CSS and fonts from Google Web Fonts.  However, one place where the site will be used is a local intranet with no Internet access.  I still want to use the fonts from Google where I can for the benefits that Google offers, suc...
Here is what I mean.  If the browser natively supports fetch api (for example, Chrome), then it uses the native browser Promise.  If I use another Promise library, (like bluebird, for example), native fetch still isn't using it — it uses native...
function loadNextComic() { window.scrollTo( 200, 480); img comic = new Image();     currentComicNumber++;     comic.src="Freqpg"+currentComicNumber+".jpg";     comic.onload = function()         {         document.getElementById("c...
I recently added a window.onerror handler to a web application. The handler posts the details of the error -- as much as the handler exposes -- to my server, so I can see what kinds of errors users are seeing. The problem is that I'm seeing a lot...
I'm trying to trap network errors such as ERR_CONNECTION_RESET via an onerror handler attached to the XMLHTTPRequest object (native JS). I wrote a quick stub to see what was passed to the onerror handler, as part of my prelimiary research. Testin...
The JavaScript single-page application I am maintaining opens most of the times in iframes created inside pages of our customers' sites.  Our SPA features a brutal override of window.onerror, as I want to be notified on my server of all JS errors...
A webpage contains few images, 5-10, average size.  Sometimes, randomly, the loading of an image fails and it is not displayed.  Let say that every 100 images loaded 1 fails.  That may happen because the server is busy or there is a temporary network...
I currently have a javascript error handler like this:  window.onerror = function(msg, url, line){ //stuff }};   But I would like to be able to use jquery to attach to onerror like so:  $(window).error(function(evtData){//stuff});   My question is, f...

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