Is it possible to cancel file upload that uses hidden iframe?

Is it possible to cancel file upload that uses hidden iframe?

I've tried to set source of iframe to emp开发者_如何学Pythonty string, but upload haven't been interrupted.

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the iframe is the transport channel that is carrying the form posting, so Atanas is correct, you have to stop the transport inside the iframe.

here is a way of doing it depending on browser:

if (iframeObj.contentWindow.document.execCommand)
    { // IE browsers
        iframeObj.contentWindow.document.execCommand('Stop');
    }
else
    { // other browsers
        iframeObj.contentWindow.stop();
    }
// notify user upload was cancelled, remove spinner images, etc

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Try this:

iframe.contentWindow.stop(); //for anything but IE
iframe.contentWindow.document.execCommand("Stop"); // for IE

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Currenty setting iframe src to "javascript:false" works for me.

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I'm not sure but i guess removing the iframe from the dom should be enough?