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export csv is not working in Safari

code written in javascript to download the data in CSV. which is working fine in FF, Chrome browser. But in Safari showing Type Error
"TypeError: '[object BlobConstructor]' is not a constructor (evaluating 'new Blob([csv], { type: 'text/csv;charset=utf-8;' })')"
I tried in all forum to solve this issue. but nothing work out.
Code I followed :
const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
if (navigator.msSaveBlob) { // IE 10+
navigator.msSaveBlob(blob, filename);
} else {
const link = document.createElement('a');
if (link.download !== undefined) { // feature detection
// Browsers that support HTML5 download attribute
const url = URL.createObjectURL(blob);
link.setAttribute('href', url);
link.setAttribute('download', filename);
link.style = 'visibility:hidden';
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
}
Suggestions and solutions welcome.

Is there any workaround to make download file working for Safari

Safari version < 9.X didn't support download the file.
Code to download the file
function downloadCSV(csv, filename) {
var downloadContainer = angular.element('<div data-tap-disabled="true"><a></a></div>');
// var downloadLink = angular.element('<a></a>'),
var downloadLink = angular.element(downloadContainer.children()[0]),
blob = new Blob([csv], {
type: 'text/csv;charset=utf-8;'
});
if (window.navigator.msSaveOrOpenBlob) {
// download file for IE
navigator.msSaveBlob(blob, filename);
}
else {
downloadLink.attr('href', window.URL.createObjectURL(blob));
downloadLink.attr('download', filename);
downloadLink.attr('style', 'display: none');
angular.element(document).find('body').append(downloadContainer);
// need timeout here since appending DOM takes some time
$timeout(function() {
downloadLink[0].click();
downloadLink.remove();
}, 10);
}
}
Our application to allow the admin to download the file and it works for all browser but not Safari 9.1.2(11601.7.7).Is there any workaround to make in download attribute to make download feature works for Safari?
Thanks
Kim

Downloading a PDF using JavaScript that is Cross Browser Compatible

I can download a PDF using AngularJS in Chrome, but this doesn't appear to work in the latest FireFox, Internet Explorer 11 or Edge (assuming it doesn't work for IE10 either), and I know a shim is needed for IE9. Don't know if this the best shim for this if anyone has an opinion, but currently it doesn't seem to work. I tried it with a response type of blob and arraybuffer just in case that made a difference, and it doesn't.
All this counters what caniuse indicates about using the Blob URLs. Anyone have this working in IE9 and up, and the last couple versions of FF, and can point out what I'm doing wrong?
$http({
url: '/api/v1/download',
method: 'GET',
responseType: 'blob' // or 'arraybuffer'
}).then(function (response) {
// Use the Blob object to create an object URL to download the file
var url = URL.createObjectURL(response.data);
// var url = URL.createObjectURL(new Blob([response], {type: 'application/pdf'})); // arraybuffer version
// Create an anchor to perform download, but don't append to the DOM
anchor.href = downloadUrl;
anchor.download = filename;
anchor.target = '_blank';
anchor.click();
URL.revokeObjectURL(downloadUrl);
anchor = null;
}).catch(function (reason) {
console.log('FAIL', reason);
});
UPDATE
Currently the best (only) answer works for IE10, 11, Edge, FF, and continues to work with Chrome. IE9 won't work using this solution if anyone has another polyfill/shim/other/etc, and Safari doesn't support the download attribute so the solution in the chosen answer doesn't work in an SPA since it just redirects the current page so in both these cases I've just left TODO stubs.
This is an update to the posted answer with more information added in comments for anyone to use or hopefully add to so IE9 and Safari work as expected:
function performDownload(blob, filename) {
// IE9 has no API for handling downloads using Blob objects, and doesn't support the download attribute
if(isIE() == 9) {
// TODO: polyfill/shim/other... change response type to?
}
// Only works for IE10 and up, including Edge
else if (typeof window.navigator.msSaveBlob !== 'undefined') {
// Provides a prompt to save the file to a location of users choice
window.navigator.msSaveBlob(blob, filename);
}
// Browsers that adhere to current standards can implement downloads
// using the Blob object with the download anchor attribute
// ---
// NOTE: Edge 13+ is compliant with both these standards, but Edge 12
// does not support the download anchor attribute so all versions
// have been grouped to use the propriety `msSaveBlob` method
else {
// Use the Blob object to create an object URL to download the file
var URL = window.URL;
var downloadUrl = URL.createObjectURL(blob);
var anchor = document.createElement('a');
if(angular.isDefined(anchor.download)) {
anchor.href = downloadUrl;
anchor.download = filename;
anchor.target = '_blank';
document.body.appendChild(anchor); // Required by Firefox
anchor.click();
// Release the existing object URL, and the anchor
$timeout(function () {
URL.revokeObjectURL(downloadUrl);
document.body.removeChild(anchor);
anchor = null;
}, 100);
}
else {
// TODO: Safari does not support the download anchor attribute...
}
}
}

I've used this with success in both IE11 and Chrome:
function saveBlob(response, contentType, filename) {
let blob = new Blob([response.arrayBuffer()], { type: contentType });
if (typeof window.navigator.msSaveBlob !== 'undefined') {
// IE workaround
window.navigator.msSaveBlob(blob, filename);
} else {
let URL = window.URL;
let downloadUrl = URL.createObjectURL(blob);
if (filename) {
let a = document.createElement('a');
if (typeof a.download === 'undefined') {
window.location.href = downloadUrl;
} else {
a.href = downloadUrl;
a.download = filename;
document.body.appendChild(a);
a.click();
}
} else {
window.location.href = downloadUrl;
}
// cleanup
setTimeout(function () { URL.revokeObjectURL(downloadUrl); }, 100);
}
}

Generate a download from client side javascript data

I've this code to generate a download from javascript but I can't/don't know how to make it work on mobile devices.
$('#export').on("click", function (e) {
var Datos = {
"imagen": "asdfASDF123",
"puntos": [{"a":"1"}, {"b":"2"}, {"c":"3"}]
};
stringy = JSON.stringify(Datos);
var blob = new Blob([stringy], {
type: "text/json"
});
var uri = URL.createObjectURL(blob);
var link = document.createElement("a");
link.download = 'datos.json';
link.href = uri;
document.body.appendChild(link);
fireEvent(link, "click");
document.body.removeChild(link);
delete link;
});
Is there something bad in this code? or is there another method to generate a download from javascript that works on mobile devices?

Saving text in a local file in Internet Explorer 10

I need to be able to save a string into a local file. Based on the code in here I got the following going:
function saveTextAsFile(fileNameToSaveAs, textToWrite) {
var textFileAsBlob = new Blob([textToWrite], {
type: 'text/plain'
});
var downloadLink = document.createElement("a");
downloadLink.download = fileNameToSaveAs;
downloadLink.innerHTML = "Download File";
if (true) { //window.webkitURL !== null) {
// Chrome allows the link to be clicked
// without actually adding it to the DOM.
downloadLink.href = window.URL.createObjectURL(textFileAsBlob);
} else {
// Firefox requires the link to be added to the DOM
// before it can be clicked.
downloadLink.href = window.URL.createObjectURL(textFileAsBlob);
downloadLink.onclick = destroyClickedElement;
downloadLink.style.display = "none";
document.body.appendChild(downloadLink);
}
downloadLink.click();
}
This works fine for Chrome and Firefox, but not for Internet Explorer 10 as
downloadLink.click();
gives:
SCRIPT5: Access is denied.
Is there any explanation/solution to this ?
thanks!

IE 10 and 11 use a distinct syntax for downloading or saving blobs to the client machine. Once you've created a blob, use:
window.navigator.msSaveBlob(blob, 'file.txt');
or
window.navigator.msSaveOrOpenBlob(blob, 'file.txt');
to trigger the file save or file save/open dialog.
For more info, see http://msdn.microsoft.com/en-us/library/ie/hh673542(v=vs.85).aspx

Thx to mstubna, here is a solution for Chrome, FF, and IE>9:
function saveTextAsFile(fileNameToSaveAs, textToWrite) {
/* Saves a text string as a blob file*/
var ie = navigator.userAgent.match(/MSIE\s([\d.]+)/),
ie11 = navigator.userAgent.match(/Trident\/7.0/) && navigator.userAgent.match(/rv:11/),
ieEDGE = navigator.userAgent.match(/Edge/g),
ieVer=(ie ? ie[1] : (ie11 ? 11 : (ieEDGE ? 12 : -1)));
if (ie && ieVer<10) {
console.log("No blobs on IE ver<10");
return;
}
var textFileAsBlob = new Blob([textToWrite], {
type: 'text/plain'
});
if (ieVer>-1) {
window.navigator.msSaveBlob(textFileAsBlob, fileNameToSaveAs);
} else {
var downloadLink = document.createElement("a");
downloadLink.download = fileNameToSaveAs;
downloadLink.href = window.URL.createObjectURL(textFileAsBlob);
downloadLink.onclick = function(e) { document.body.removeChild(e.target); };
downloadLink.style.display = "none";
document.body.appendChild(downloadLink);
downloadLink.click();
}
}

For modern browsers solution goes like this, tested: IE11, FF & Chrome
var csvData = new Blob([arg.data], {type: 'text/csv;charset=utf-8;'});
//IE11 & Edge
if (navigator.msSaveBlob) {
navigator.msSaveBlob(csvData, exportFilename);
} else {
//In FF link must be added to DOM to be clicked
var link = document.createElement('a');
link.href = window.URL.createObjectURL(csvData);
link.setAttribute('download', exportFilename);
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}

plus for ie EDGE:
var ieEDGE = navigator.userAgent.match(/Edge/g);
if (ie || ie11 || ieEDGE) {
if (ieVer>9 || ieEDGE) {
var textFileAsBlob = new Blob([textToWrite], {
type: 'text/plain'
});
window.navigator.msSaveBlob(textFileAsBlob, fileName);
} else {
console.log("No supported on IE ver<10");
}
} else { ... }

You can use FileSaver library to achieve that. Easy to use, takes care of browser types and versions.
There is an AngularJS version available as well.