jQuery | Download Textarea Content as Html File

/* Download Textarea Content as Html File.js */
$('#download-button').click(function() {
    if ('Blob' in window) {
        var fileName = prompt('Please enter file name to save', 'Untitled.html');
        if (fileName) {
            var textValue = $('textarea').html();
            var textToWrite = htmlDecode(textValue);
            var textFileAsBlob = new Blob([textToWrite], {
                type: 'application/xhtml+xml'
            });
            if ('msSaveOrOpenBlob' in navigator) {
                navigator.msSaveOrOpenBlob(textFileAsBlob, fileName);
            } else {
                var downloadLink = document.createElement('a');
                downloadLink.download = fileName;
                downloadLink.innerHTML = 'Download File';
                if ('webkitURL' in window) {
                    downloadLink.href = window.webkitURL.createObjectURL(textFileAsBlob);
                } else {
                    downloadLink.href = window.URL.createObjectURL(textFileAsBlob);
                    downloadLink.click(function() {
                        document.body.removeChild(event.target);
                    });
                    downloadLink.style.display = 'none';
                    document.body.appendChild(downloadLink);
                }
                downloadLink.click();
            }
        }
    } else {
        alert('Your browser does not support the HTML5 Blob.');
    }
});