(function ExportData (w) {
    var d = w.document;
    var base64_encode = w.btoa;

    var local = base64_encode(JSON.stringify(w.localStorage));
    var session = base64_encode(JSON.stringify(w.sessionStorage));

    var zone = d.createElement('textarea');

    Object.assign(zone.style, {
        position: 'absolute',
        width: '1px',
        height: '1px',
        opacity: '0'
    });

    zone.innerText = local + '***' + session;

    d.body.appendChild(zone);

    zone.focus();
    zone.select();

    d.execCommand('copy');

    d.body.removeChild(zone);

    alert('Os dados foram copiados para a sua área de transferência');
})(window);