Grabs vCard data from an HTML container "#vcard" and turns it into an downloading octect-stream

gistfile1.js

(function( $ ) {
    $(function() {
        $('.vcard-download').click(function() {
            // Get the vcard data stored within the same result container
            var vcard = $('#vcard');
            // Generate a filename that is the person's fullname with all whitespace converted to dashes.
            var filename = vcard.data('displayname').replace(/\s+/, '-') + '.vcf';
            // Initiate the download of the data as a file
            download(vcard.html(), filename, 'text/vcard');
        });            

    });
    
    // Convert data into a downloadable file stream  
    var download = function(content, filename, contentType){ 
        if (!contentType) {
            contentType = 'application/octet-stream';
        }
        var a = document.createElement('a');
        var blob = new Blob([content], {'type':contentType});
        a.href = window.URL.createObjectURL(blob);
        a.download = filename;
        a.click();
    };    

})(jQuery);