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Alternative for Html Anchor tag `download` attribute which doesn't work in Internet Explorer [duplicate]

From the following code I'm creating a dynamic anchor tag which downloads a file. This code works well in Chrome but not in IE. How can I get this working
<div id="divContainer">
<h3>Sample title</h3>
</div>
<button onclick="clicker()">Click me</button>
<script type="text/javascript">
function clicker() {
var anchorTag = document.createElement('a');
anchorTag.href = "http://cdn1.dailymirror.lk/media/images/finance.jpg";
anchorTag.download = "download";
anchorTag.click();
var element = document.getElementById('divContainer');
element.appendChild(anchorTag);
}
</script>

Internet Explorer does not presently support the Download attribute on A tags.
See http://caniuse.com/download and http://status.modern.ie/adownloadattribute; the latter indicates that the feature is "Under consideration" for IE12.

In my case, since there's a requirement to support the usage of IE 11 (version 11.0.9600.18665), I ended up using the solution provided by #Henners on his comment:
// IE10+ : (has Blob, but not a[download] or URL)
if (navigator.msSaveBlob) {
return navigator.msSaveBlob(blob, fileName);
}
It's quite simple and practical.
Apparently, this solution was found on the Javascript download function created by dandavis.

Old question, but thought I'd add our solution. Here is the code I used on my last project. It's not perfect, but it passed QA in all browsers and IE9+.
downloadCSV(data,fileName){
var blob = new Blob([data], {type: "text/plain;charset=utf-8;"});
var anchor = angular.element('<a/>');
if (window.navigator.msSaveBlob) { // IE
window.navigator.msSaveOrOpenBlob(blob, fileName)
} else if (navigator.userAgent.search("Firefox") !== -1) { // Firefox
anchor.css({display: 'none'});
angular.element(document.body).append(anchor);
anchor.attr({
href: 'data:attachment/csv;charset=utf-8,' + encodeURIComponent(data),
target: '_blank',
download: fileName
})[0].click();
anchor.remove();
} else { // Chrome
anchor.attr({
href: URL.createObjectURL(blob),
target: '_blank',
download: fileName
})[0].click();
}
}
Using the ms specific API worked best for us in IE. Also note that some browsers require the anchor to actually be in the DOM for the download attribute to work, whereas Chrome, for example, does not. Also, we found some inconsistencies with how Blobs work in various browsers. Some browsers also have an export limit. This allows the largest possible CSV export in each browser afaik.

As of build 10547+, the Microsoft Edge browser is now supporting the download attribute on a tags.
Download Image
Edge features update: https://dev.windows.com/en-us/microsoft-edge/platform/changelog/desktop/10547/
a[download] standard: http://www.w3.org/html/wg/drafts/html/master/links.html#attr-hyperlink-download

This code fragment allows saving blob in the file in IE, Edge and other modern browsers.
var request = new XMLHttpRequest();
request.onreadystatechange = function() {
if (request.readyState === 4 && request.status === 200) {
// Extract filename form response using regex
var filename = "";
var disposition = request.getResponseHeader('Content-Disposition');
if (disposition && disposition.indexOf('attachment') !== -1) {
var filenameRegex = /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/;
var matches = filenameRegex.exec(disposition);
if (matches != null && matches[1]) filename = matches[1].replace(/['"]/g, '');
}
if (window.navigator.msSaveOrOpenBlob) { // for IE and Edge
window.navigator.msSaveBlob(request.response, filename);
} else {
// for modern browsers
var a = document.createElement('a');
a.href = window.URL.createObjectURL(request.response);
a.download = filename;
a.style.display = 'none';
document.body.appendChild(a);
a.click();
}
}
button.disabled = false;
dragArea.removeAttribute('spinner-visible');
// spinner.style.display = "none";
};
request.open("POST", "download");
request.responseType = 'blob';
request.send(formData);
For IE and Edge use: msSaveBlob

Use my function
It bind your atag to download file in IE
function MS_bindDownload(el) {
if(el === undefined){
throw Error('I need element parameter.');
}
if(el.href === ''){
throw Error('The element has no href value.');
}
var filename = el.getAttribute('download');
if (filename === null || filename === ''){
var tmp = el.href.split('/');
filename = tmp[tmp.length-1];
}
el.addEventListener('click', function (evt) {
evt.preventDefault();
var xhr = new XMLHttpRequest();
xhr.onloadstart = function () {
xhr.responseType = 'blob';
};
xhr.onload = function () {
navigator.msSaveOrOpenBlob(xhr.response, filename);
};
xhr.open("GET", el.href, true);
xhr.send();
})
}

Append child first and then click
Or you can use window.location= 'url' ;

As mentioned in earlier answer , download attribute is not supported in IE . As a work around, you can use iFrames to download the file . Here is a sample code snippet.
function downloadFile(url){
var oIframe = window.document.createElement('iframe');
var $body = jQuery(document.body);
var $oIframe = jQuery(oIframe).attr({
src: url,
style: 'display:none'
});
$body.append($oIframe);
}

I copied the code from here and updated it for ES6 and ESLint and added it to my project.
You can save the code to download.js and use it in your project like this:
import Download from './download'
Download('/somefile.png', 'somefile.png')
Note that it supports dataURLs (from canvas objects), and more... see https://github.com/rndme for details.

Is there a polyfill for link download with data uri?

I have some code should be generated by the server:
<a download="test.csv" href="data:text/plain;charset=utf-8;base64,w4FydsOtenTFsXLFkXTDvGvDtnJmw7p0w7Nnw6lwLg==">
teszt
</a>
It works with current chrome, firefox, opera. I'd like it to support MSIE11. Afaik msSaveBlob is the solution for that. Is there an existing js polyfill I could use, or should I write it?

Okay I made a simple polyfill based on the code I found in SO answers and here. I tested it on MSIE11, it works. It does not support file download with XHR, just data URIs. I recommend to use the Content-Disposition response header instead if you want to force file download. In my case the server just creates the file, but should not store it and I needed a HTML response as well, so this was the way to go. An alternative solution would be to send the file in email, but I found this one better by small files.
(function (){
addEvent(window, "load", function (){
if (isInternetExplorer())
polyfillDataUriDownload();
});
function polyfillDataUriDownload(){
var links = document.querySelectorAll('a[download], area[download]');
for (var index = 0, length = links.length; index<length; ++index) {
(function (link){
var dataUri = link.getAttribute("href");
var fileName = link.getAttribute("download");
if (dataUri.slice(0,5) != "data:")
throw new Error("The XHR part is not implemented here.");
addEvent(link, "click", function (event){
cancelEvent(event);
try {
var dataBlob = dataUriToBlob(dataUri);
forceBlobDownload(dataBlob, fileName);
} catch (e) {
alert(e)
}
});
})(links[index]);
}
}
function forceBlobDownload(dataBlob, fileName){
window.navigator.msSaveBlob(dataBlob, fileName);
}
function dataUriToBlob(dataUri) {
if (!(/base64/).test(dataUri))
throw new Error("Supports only base64 encoding.");
var parts = dataUri.split(/[:;,]/),
type = parts[1],
binData = atob(parts.pop()),
mx = binData.length,
uiArr = new Uint8Array(mx);
for(var i = 0; i<mx; ++i)
uiArr[i] = binData.charCodeAt(i);
return new Blob([uiArr], {type: type});
}
function addEvent(subject, type, listener){
if (window.addEventListener)
subject.addEventListener(type, listener, false);
else if (window.attachEvent)
subject.attachEvent("on" + type, listener);
}
function cancelEvent(event){
if (event.preventDefault)
event.preventDefault();
else
event.returnValue = false;
}
function isInternetExplorer(){
return /*#cc_on!#*/false || !!document.documentMode;
}
})();

Opening PDF from angular blob in Internet explorer browser

I have the following server side code in web api
tempResponse = Request.CreateResponse(HttpStatusCode.OK);
tempResponse.Content = new StreamContent(stream);
tempResponse.Content.Headers.Add(#"Content-type", "application/pdf");
tempResponse.Content.Headers.ContentType = new
System.Net.Http.Headers.MediaTypeHeaderValue("application/pdf");
tempResponse.Content.Headers.ContentDisposition = new
System.Net.Http.Headers.ContentDispositionHeaderValue("inline");
I am using angular JS and following is the code in my javascript file.
$http.post(apiURL + "/DownloadPdf", data, { responseType: 'arraybuffer'}, config)
.then(function (result) {
var file = new Blob([result.data], { type: 'application/pdf' })
var fileName = "CommissionStatement.pdf"
if (window.navigator && window.navigator.msSaveOrOpenBlob) {
window.location.href = 'Assets/Document CheckList.pdf'
window.navigator.msSaveOrOpenBlob(file, fileName)
} else {
var objectUrl = URL.createObjectURL(file)
window.open(window.location.href = 'Assets/Document CheckList.pdf', '_blank')
window.open(objectUrl, '_blank')
$window.location.href =
window.location.protocol + "//" +
window.location.host + "?BrokerId=" +
AgentInfo.Data.BrokerId +
"&OfficeCode=" +
AgentInfo.Data.OfficeCode;
}
});
console.log($scope.Result)
},
function (error) {
$scope.Error = error.data
})
This blob opens fine in Google Chrome and FireFox. But IE will prompt for open or save. But I would like it to open in the browser. I would appreciate any input in making it open without prompting. Thanks

How about just excluding the if/else statement and just open the ObjectURL in IE as well? Otherwise pdf.js is a alternative if you want to render it in a browser using canvas
Another problem I see with your code is that you are trying to open up a new window with window.open() the problem is that they can become very easy blocked unless it happens within 1 sec after a user interaction event like onclick for example. A xhr.onload is not an user interaction event
So if you are experience some issue like that try doing something like
// Untested, just to give a ruffly idea
btn.onclick = () => {
var win = window.open('', '_blank')
win.document.body.innerHTML = 'loading...'
$http.post(...).then(res => {
var url = URL.createObjectURL(blob)
// redirect
win.location.href = url
})
}
Another thing. Why are you using responseType = arrayBuffer? you could set it to a blob directly...?

Feed FileReader from server side files

I´m starting to customize/improve an old audio editor project. I can import audio tracks to my canvas VIA drag&drop from my computer. The thing is that I also would like to use audio tracks already stored in the server just clicking over a list of available tracks... instead of use the <input type="file"> tags. How can I read the server side files with a FileReader?Ajax perhaps? Thanks in advance.
This is the code for the file reader:
Player.prototype.loadFile = function(file, el) {
//console.log(file);
var reader = new FileReader,
fileTypes = ['audio/mpeg', 'audio/mp3', 'audio/wave', 'audio/wav'],
that = this;
if (fileTypes.indexOf(file.type) < 0) {
throw('Unsupported file format!');
}
reader.onloadend = function(e) {
if (e.target.readyState == FileReader.DONE) { // DONE == 2
$('.progress').children().width('100%');
var onsuccess = function(audioBuffer) {
$(el).trigger('Audiee:fileLoaded', [audioBuffer, file]);
},
onerror = function() {
// on error - show alert modal
var tpl = (_.template(AlertT))({
message: 'Error while loading the file ' + file.name + '.'
}),
$tpl = $(tpl);
$tpl.on('hide', function() { $tpl.remove() })
.modal(); // show the modal window
// hide the new track modal
$('#newTrackModal').modal('hide');
};
that.context.decodeAudioData(e.target.result, onsuccess, onerror);
}
};
// NOTE: Maybe move to different module...
reader.onprogress = function(e) {
if (e.lengthComputable) {
$progress = $('.progress', '#newTrackModal');
if ($progress.hasClass('hide'))
$progress.fadeIn('fast');
// show loading progress
var loaded = Math.floor(e.loaded / e.total * 100);
$progress.children().width(loaded + '%');
}
};
reader.readAsArrayBuffer(file);
};
return Player;

Thanks for the suggestion micronn, I managed to make a bypass without touch the original code. The code as follows is the following:
jQuery('.file_in_server').click(function()
{
var url=jQuery(this).attr('src');//Get the server path with the mp3/wav file
var filename = url.replace(/^.*[\\\/]/, '');
var path="http://localhost/test/audio/tracks/"+filename;
var file = new File([""], filename); //I need this hack because the original function recives a buffer as well as the file sent from the web form, so I need it to send at least the filename
var get_track = new XMLHttpRequest();
get_track.open('GET',path,true);
get_track.responseType="arraybuffer";
get_track.onload = function(e)
{
if (this.status == 200) //When OK
{
Audiee.Player.context.decodeAudioData(this.response,function(buffer){ //Process the audio toward a buffer
jQuery('#menu-view ul.nav').trigger('Audiee:fileLoaded', [buffer, file]); //Send the buffer & file hack to the loading function
},function(){
alert("Error opening file");
jQuery('#newTrackModal').modal('hide');
});
}
};
get_track.send();
});
After this, in the fileLoaded function, the track is added to the editor.
var name = 'Pista ' + Audiee.Collections.Tracks.getIndexCount();
track = new TrackM({buffer: audioBuffer, file: file, name: name}); //being audioBuffer my buffer, file the fake file and name the fake file name
Audiee.Collections.Tracks.add(track);
And... thats it!

Accessing file system using javascript in firefox or chrome?

I had been able to do this up until Firefox 15 using:
netscape.security.privilegeManager.enablePrivilege("UniversalXPConnect")
and setting the signed.applets.codebase_principal_support option to true. Unfortunately as of FF 17 this functionality has been removed. From what I understand Chrome has been the same way for some time now.
Does anyone know if there has been a Firefox or Chrome extension created that allows for the use of enablePrivilege? If not, recommendations on where to start if building my own?

File API, the reason those have stopped working is because both have now implemented the html5 file api.
Here is a html5 demo of the api.
Here is the relevant script in case they remove the demo:
<script>
var holder = document.getElementById('holder'),
state = document.getElementById('status');
if (typeof window.FileReader === 'undefined') {
state.className = 'fail';
} else {
state.className = 'success';
state.innerHTML = 'File API & FileReader available';
}
holder.ondragover = function () { this.className = 'hover'; return false; };
holder.ondragend = function () { this.className = ''; return false; };
holder.ondrop = function (e) {
this.className = '';
e.preventDefault();
var file = e.dataTransfer.files[0],
reader = new FileReader();
reader.onload = function (event) {
console.log(event.target);
holder.style.background = 'url(' + event.target.result + ') no-repeat center';
};
console.log(file);
reader.readAsDataURL(file);
return false;
};
</script>
As a note: if you need to access a file on your local machine in chrome you need to run the program using this switch --allow-file-access-from-files (for using a file input without it actually loading to the server, otherwise you get a xhr cross-domain error).
I don't know of the equivalent in firefox.