404 Why 'catch' can't catch?

[abel-oye]

404 Why 'catch' can't catch?

[camsong]

You should be able to catch after a timeout(default to 5 seconds). JSONP uses a <script> to make request, when the <script> failed, the plugin is not informed, that's why I used setTimeout

[abel-oye]

@why use time out, Can not use script onload？

[camsong]

Not sure if script onload supports IE8+?

[abel-oye]

If supported, the onload is more appropriate?
And then use a timeout?

[camsong]

yep, this would be great. Can you help to investigate this?

[abel-oye]

IE8 does not support the "onerror"; but you can determine whether to download through the onreadyState, and then through the characteristics of the callback, check the overall function jsonp, to verify the results.