jQuery.error() is not working for iframe.

问题

I'm trying to use jquery to detect whether an iframe fails to load or the page doesn't exist, but the code below isn't working:

$('#frame').error(function(){
    //code here
});

回答1:

One of the comments on the documentation says:

Using .error() on an iframe never seems to trigger (even though .load() will trigger on a successful iframe load).

This event does not appear to be designed to work in this use case.

The answers to this question explain how to do it.

回答2:

iframe do not trigger onerror event even if it fails to load the document. I think load will be triggered even in this case and you can check for the status code to determine if the page is loaded successfully or no.

来源：https://stackoverflow.com/questions/6867853/jquery-error-is-not-working-for-iframe