download file with a link

file-download.js

_onDownloadTaxonomyNowClick: function () {
			var parsedURL = globals.rest.GET_TAXONOMY_FEED_FILE_URL.split("/"),
				filename = parsedURL[parsedURL.length - 1],
				linkElement = document.createElement("a");

			request.get(globals.rest.GET_TAXONOMY_FEED_FILE_URL, {
				"headers": {
					"Content-Type": "application/xml"
				},
				"handleAs": "xml"
			}).then(function (data) {
				var blob = null,
					objectURL = null;

				if (data) {
					try {
						blob = new Blob([new XMLSerializer().serializeToString(data.documentElement)], {
							type: "text/xml;charset=utf-8"
						});
						objectURL = URL.createObjectURL(blob);

						if (navigator.msSaveBlob || navigator.msSaveOrOpenBlob) {
							navigator.msSaveOrOpenBlob(blob, filename);
						} else {
							linkElement.setAttribute("href", objectURL);
							linkElement.setAttribute("download", filename);
							linkElement.style.display = "none";
							document.body.appendChild(linkElement);
							linkElement.click();
							document.body.removeChild(linkElement);
						}
						message.success(l10n.saveFileSuccess);
					} catch (error) {
						console.error(error);
						message.error(l10n.saveFileFailed);
					}
				} else {
					console.error("request error");
					message.error(l10n.saveFileFailed);
				}
			}, function (error) {
				console.error(error);
				message.error(l10n.saveFileFailed);
			});
		};