jquery download

$.fileDownload('/url/to/download.pdf', {
    successCallback: function (url) {
 
        alert('You just got a file download dialog or ribbon for this URL :' + url);
    },
    failCallback: function (html, url) {
 
        alert('Your file download just failed for this URL:' + url + '\r\n' +
                'Here was the resulting error HTML: \r\n' + html
                );
    }
})