是否可以取消使用隐藏 iframe 的文件上传?

问题描述

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

I've tried to set source of iframe to empty string, but upload haven't been interrupted.

解决方案

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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