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Any idea of JSONP implementations, like that in jQuery support this? Everything I've read here about detecting that JSONP failures to load says it can't be detected but a timeout can be a workaround, and a timeout was added to a recent version of JSONP. It seems that this answer provides something better than the timeout though - is that correct?
– hippietrail
Commented Dec 26, 2011 at 21:29
1

example possible please?
– rogerdpack
Commented Oct 27, 2016 at 20:23
18

<script src="nonexistent.js" onerror="alert('error!')"></script> fiddle
– Rudey
Commented Feb 17, 2017 at 10:48
1

@Rudey Uncaught SyntaxError: Unexpected token '<' (in latest Chrome)
– daleyjem
Commented Feb 29, 2020 at 5:25
@daleyjem sounds like you've attempted to put a HTML tag in JavaScript. <script src="nonexistent.js" onerror="alert('error!')"></script> should go in your HTML file, not JS.
– Rudey
Commented Mar 3, 2020 at 16:18

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create code fences with backticks ` or tildes ~
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like so
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```
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