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Downloading a webform JSON object list in Firefox 26

I'm forced to use an old firefox version 26. I have the below code working perfectly on firefox 72, way more recent, I know. While stepping through the download function, I realize my problem has something to do with the a.click(). While comparing the debugging consoles between browsers I don't notice any differences in the function, but the a.click() isn't triggering the saveAs popup.
Here is the json list format, which has indices equal to n select box elements.
testn:{
val: "pass",
desc: "test description"}
JS
jsonData = $("#myform").serializeArray();
function download(content, fileName, contentType) {
var a = document.createElement("a");
var file = new Blob([content], {type: contentType});
a.href = URL.createObjectURL(file);
a.download = fileName;
a.click();
}
if (confirm("Save results to <SCRIPT_PATH_LOCATION>")){
download(JSON.stringify(jsonData), 'webform.results.json', 'text/plain');
} else {
return false
}

I figured it out. Modern convenience allowed me to get away with not adequately appending the new element, "a" onto the webform.
JS
jsonData = $("#myform").serializeArray();
function download(content, fileName, contentType) {
var a = document.createElement("a");
//Insert these
document.body.appendChild(a);
a.style = "display: none";
//Insert complete
var file = new Blob([content], {type: contentType});
a.href = URL.createObjectURL(file);
a.download = fileName;
a.click();
}
if (confirm("Save results to <SCRIPT_PATH_LOCATION>")){
download(JSON.stringify(jsonData), 'webform.results.json', 'text/plain');
} else {
return false
}

octet stream download as csv doesn't work in IE [duplicate]

I have this in my Angular.js controller that downloads a CSV file:
var blob = new Blob([csvContent.join('')], { type: 'text/csv;charset=utf-8'});
var link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
link.href = URL.createObjectURL(blob);
link.download = 'teams.csv';
link.click();
This works perfectly in Chrome but not in IE. A browser console log says:
HTML7007: One or more blob URLs were revoked by closing the blob for
which they were created. These URLs will no longer resolve as the data
backing the URL has been freed.
What does it mean and how can I fix it?

Try this using, this or useragent
if (navigator.appVersion.toString().indexOf('.NET') > 0)
window.navigator.msSaveBlob(blob, filename);
else
{
var blob = new Blob(['stringhere'], { type: 'text/csv;charset=utf-8' });
var link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
link.href = URL.createObjectURL(blob);
link.download = 'teams.csv';
link.click();
}

IE won't allow you to open blobs directly. You have to use msSaveOrOpenBlob. There's also msSaveBlob
if (window.navigator && window.navigator.msSaveOrOpenBlob) {
window.navigator.msSaveOrOpenBlob(blob, fileName);
} else {
var objectUrl = URL.createObjectURL(blob);
window.open(objectUrl);
}

I needed to use a Blob to download a converted a base64 PNG image. I was able to successfully download the blob on IE11 with window.navigator.msSaveBlob
See the following msdn link:
http://msdn.microsoft.com/en-us/library/hh779016(v=vs.85).aspx
Specifically, you should call:
window.navigator.msSaveBlob(blobObject, 'msSaveBlob_testFile.txt');
where blobObject is a Blob created in the usual fashion.

Complete Solution for Chrome, Internet Explorer Firefox and Opera
There are lots of nice bits on this page, but I had to use a combination of a few things to get it all to work. Hopefully this helps you.
Use a button or link to trigger a function called download():
<button class="button-no save-btn" ng-click="download()">DOWNLOAD</button>
Put this in your controller:
$scope.download = function () {
// example shows a JSON file
var content = JSON.stringify($scope.stuffToPutInFile, null, " ");
var blob = new Blob([content], {type: 'application/json;charset=utf-8'});
if (window.navigator && window.navigator.msSaveBlob) {
// Internet Explorer workaround
$log.warn("Triggering download using msSaveBlob");
window.navigator.msSaveBlob(blob, "export.json");
} else {
// other browsers
$log.warn("Triggering download using webkit");
var url = (window.URL || window.webkitURL).createObjectURL(blob);
// create invisible element
var downloadLink = angular.element('<a></a>');
downloadLink.attr('href', url);
downloadLink.attr('download', 'export.json');
// make link invisible and add to the DOM (Firefox)
downloadLink.attr('style','display:none');
angular.element(document.body).append(downloadLink);
// trigger click
downloadLink[0].click();
}
};

What's your IE browser version? You need a modern browser or IE10+
http://caniuse.com/bloburls

Maybe you need some delay. What about with:
link.click();
setTimeout(function(){
document.body.createElementNS('http://www.w3.org/1999/xhtml', 'a');
URL.revokeObjectURL(link.href);
}, 100);

I needed to get the download feature to work in Chrome and IE11. I had good success with this code.
HTML
<div ng-repeat="attachment in attachments">
<a ng-click="openAttachment(attachment)" ng-href="{{attachment.fileRef}}">{{attachment.filename}}</a>
</div>
JS
$scope.openAttachment = function (attachment) {
if (window.navigator && window.navigator.msSaveOrOpenBlob) {
window.navigator.msSaveOrOpenBlob(
b64toBlob(attachment.attachment, attachment.mimeType),
attachment.filename
);
}
};

Done it this way, working fine for me.
downloadFile(data) {
if (navigator.msSaveBlob) {
let blob = new Blob([data], {
"type": "text/csv;charset=utf8;"
});
navigator.msSaveBlob(blob, this.fileName);
}
else {
let blob = new Blob(['\ufeff' + data], { type: 'text/csv;charset=utf-8;' });
let $link = document.createElement("a");
let url = URL.createObjectURL(blob);
$link.setAttribute("target", "_blank");
$link.setAttribute("href", url);
$link.setAttribute("download", this.fileName);
$link.style.visibility = "hidden";
document.body.appendChild($link);
$link.click();
document.body.removeChild($link);
}
}

Try to use this instead :
var blob = file.slice(0, file.size);

Create polyfill method as below,had a variable filename since in my case download filename was static.This method will be called while blob function is not supported as in case of Internet explorer
if (!HTMLCanvasElement.prototype.toBlob) {
Object.defineProperty(HTMLCanvasElement.prototype,
'toBlob', {
value: function (callback, type, quality) {
var canvas = this;
setTimeout(function () {
var binStr = atob(canvas.toDataURL(type, quality).split(',')[1]),
len = binStr.length,
arr = new Uint8Array(len);
for (var i = 0; i < len; i++) {
arr[i] = binStr.charCodeAt(i);
}
var blob = new Blob([arr], {
type: 'image/png'
});
window.navigator.msSaveOrOpenBlob(blob, fileName);
});
}
});
}

try {
const blob = new Blob([res.body], {
type: res.headers.get('Content-Type'),
});
const file = new File([blob], this.getFileName(res), {
type: res.headers.get('Content-Type'),
});
saveAs(file);
} catch (err) {
var textFileAsBlob = new Blob([res.body], {
type: res.headers.get('Content-Type'),
});
window.navigator.msSaveBlob(textFileAsBlob, this.getFileName(res));
}
To get the file name. Use the below function.
getFileName(response: any) {
let name: string;
try {
const contentDisposition: string = response.headers.get(
'content-disposition'
);
const [, filename] = contentDisposition.split('filename=');
name = filename;
} catch (e) {
name = 'File_Name_Not_Specified_' + new Date();
}
return name;
}
This worked for me.

CSV Export of Table in Chrome Not Working - JavaScript/AngularJS

I'm currently working on fixing a CSV Export of a data table on a web application.
It's currently able to export on all needed browsers except Chrome when you click the export button.
I've been trying to figure it out for a while now and I'm resisting pulling my hair out.
The code below is my service that was working until recently. Any help is greatly appreciated.
svc.downloadContent =
(target, fileName, content) => {
if (!browserSvc.canDownloadFiles()) return;
// IE10
if (window.navigator.msSaveOrOpenBlob) {
const blob = new Blob([content], {type: 'text/csv'});
window.navigator.msSaveOrOpenBlob(blob, fileName);
// IE9
} else if (env.browser === 'Explorer') {
const frame = document.createElement('iframe');
document.body.appendChild(frame);
angular.element(frame).hide();
const cw = frame.contentWindow;
const cwDoc = cw.document;
cwDoc.open('text/csv', 'replace');
cwDoc.write(content);
cwDoc.close();
cw.focus();
cwDoc.execCommand('SaveAs', true, fileName);
document.body.removeChild(frame);
// Sane browsers
} else {
const blob = new Blob([content], {type: 'text/csv'});
const url = URL.createObjectURL(blob);
const a = angular.element(target);
const download = a.attr('download');
// If not already downloading ...
if (!download) {
a.attr('download', fileName);
a.attr('href', url);
// This must run in the next tick to avoid
// "$digest already in progress" error.
//$timeout(() => target.click());
try {
target.click();
// Clear attributes to prepare for next download.
a.attr('download', '');
a.attr('href', '');
} catch (e) {
console.error('csv-svc.js: e =', e);
}
}
}

I managed to figure this out just a couple minutes after posting my question. I needed to add an else if just for Chrome. However, I will post the fix and leave this up, in hopes that it may help someone else in the future.
else if (env.browser === 'Chrome') {
const blob = new Blob([content], {type: 'text/csv'});
const url = URL.createObjectURL(blob);
const link = document.createElement('a');
link.href = url;
link.style = 'visibility:hidden';
link.download = fileName;
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}

Blob download is not working in IE

I have this in my Angular.js controller that downloads a CSV file:
var blob = new Blob([csvContent.join('')], { type: 'text/csv;charset=utf-8'});
var link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
link.href = URL.createObjectURL(blob);
link.download = 'teams.csv';
link.click();
This works perfectly in Chrome but not in IE. A browser console log says:
HTML7007: One or more blob URLs were revoked by closing the blob for
which they were created. These URLs will no longer resolve as the data
backing the URL has been freed.
What does it mean and how can I fix it?

Try this using, this or useragent
if (navigator.appVersion.toString().indexOf('.NET') > 0)
window.navigator.msSaveBlob(blob, filename);
else
{
var blob = new Blob(['stringhere'], { type: 'text/csv;charset=utf-8' });
var link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
link.href = URL.createObjectURL(blob);
link.download = 'teams.csv';
link.click();
}

IE won't allow you to open blobs directly. You have to use msSaveOrOpenBlob. There's also msSaveBlob
if (window.navigator && window.navigator.msSaveOrOpenBlob) {
window.navigator.msSaveOrOpenBlob(blob, fileName);
} else {
var objectUrl = URL.createObjectURL(blob);
window.open(objectUrl);
}

I needed to use a Blob to download a converted a base64 PNG image. I was able to successfully download the blob on IE11 with window.navigator.msSaveBlob
See the following msdn link:
http://msdn.microsoft.com/en-us/library/hh779016(v=vs.85).aspx
Specifically, you should call:
window.navigator.msSaveBlob(blobObject, 'msSaveBlob_testFile.txt');
where blobObject is a Blob created in the usual fashion.

Complete Solution for Chrome, Internet Explorer Firefox and Opera
There are lots of nice bits on this page, but I had to use a combination of a few things to get it all to work. Hopefully this helps you.
Use a button or link to trigger a function called download():
<button class="button-no save-btn" ng-click="download()">DOWNLOAD</button>
Put this in your controller:
$scope.download = function () {
// example shows a JSON file
var content = JSON.stringify($scope.stuffToPutInFile, null, " ");
var blob = new Blob([content], {type: 'application/json;charset=utf-8'});
if (window.navigator && window.navigator.msSaveBlob) {
// Internet Explorer workaround
$log.warn("Triggering download using msSaveBlob");
window.navigator.msSaveBlob(blob, "export.json");
} else {
// other browsers
$log.warn("Triggering download using webkit");
var url = (window.URL || window.webkitURL).createObjectURL(blob);
// create invisible element
var downloadLink = angular.element('<a></a>');
downloadLink.attr('href', url);
downloadLink.attr('download', 'export.json');
// make link invisible and add to the DOM (Firefox)
downloadLink.attr('style','display:none');
angular.element(document.body).append(downloadLink);
// trigger click
downloadLink[0].click();
}
};

What's your IE browser version? You need a modern browser or IE10+
http://caniuse.com/bloburls

Maybe you need some delay. What about with:
link.click();
setTimeout(function(){
document.body.createElementNS('http://www.w3.org/1999/xhtml', 'a');
URL.revokeObjectURL(link.href);
}, 100);

I needed to get the download feature to work in Chrome and IE11. I had good success with this code.
HTML
<div ng-repeat="attachment in attachments">
<a ng-click="openAttachment(attachment)" ng-href="{{attachment.fileRef}}">{{attachment.filename}}</a>
</div>
JS
$scope.openAttachment = function (attachment) {
if (window.navigator && window.navigator.msSaveOrOpenBlob) {
window.navigator.msSaveOrOpenBlob(
b64toBlob(attachment.attachment, attachment.mimeType),
attachment.filename
);
}
};

Done it this way, working fine for me.
downloadFile(data) {
if (navigator.msSaveBlob) {
let blob = new Blob([data], {
"type": "text/csv;charset=utf8;"
});
navigator.msSaveBlob(blob, this.fileName);
}
else {
let blob = new Blob(['\ufeff' + data], { type: 'text/csv;charset=utf-8;' });
let $link = document.createElement("a");
let url = URL.createObjectURL(blob);
$link.setAttribute("target", "_blank");
$link.setAttribute("href", url);
$link.setAttribute("download", this.fileName);
$link.style.visibility = "hidden";
document.body.appendChild($link);
$link.click();
document.body.removeChild($link);
}
}

Try to use this instead :
var blob = file.slice(0, file.size);

Create polyfill method as below,had a variable filename since in my case download filename was static.This method will be called while blob function is not supported as in case of Internet explorer
if (!HTMLCanvasElement.prototype.toBlob) {
Object.defineProperty(HTMLCanvasElement.prototype,
'toBlob', {
value: function (callback, type, quality) {
var canvas = this;
setTimeout(function () {
var binStr = atob(canvas.toDataURL(type, quality).split(',')[1]),
len = binStr.length,
arr = new Uint8Array(len);
for (var i = 0; i < len; i++) {
arr[i] = binStr.charCodeAt(i);
}
var blob = new Blob([arr], {
type: 'image/png'
});
window.navigator.msSaveOrOpenBlob(blob, fileName);
});
}
});
}

try {
const blob = new Blob([res.body], {
type: res.headers.get('Content-Type'),
});
const file = new File([blob], this.getFileName(res), {
type: res.headers.get('Content-Type'),
});
saveAs(file);
} catch (err) {
var textFileAsBlob = new Blob([res.body], {
type: res.headers.get('Content-Type'),
});
window.navigator.msSaveBlob(textFileAsBlob, this.getFileName(res));
}
To get the file name. Use the below function.
getFileName(response: any) {
let name: string;
try {
const contentDisposition: string = response.headers.get(
'content-disposition'
);
const [, filename] = contentDisposition.split('filename=');
name = filename;
} catch (e) {
name = 'File_Name_Not_Specified_' + new Date();
}
return name;
}
This worked for me.

Blob constructor browser compatibility

I am developping an application where I recieve image data stored in a uint8Array.
I then transform this data to a Blob and then build the image url.
Simplified code to get data from server:
var array;
var req = new XMLHttpRequest();
var url = "img/" + uuid + "_" +segmentNumber+".jpg";
req.open("GET", url, true);
req.responseType = "arraybuffer";
req.onload = function(oEvent) {
var data = req.response;
array = new Int8Array(data);
};
Constructor:
out = new Blob([data], {type : datatype} );
The Blob contsructor is causing problem. It works fine on all browsers except Chrome on mobile and desktop devices.
Use of Blob:
// Receive Uint8Array using AJAX here
// array = ...
// Create BLOB
var jpeg = new Blob( [array.buffer], {type : "image/jpeg"});
var url = DOMURL.createObjectURL(jpeg);
img.src = url;
Desktop Chrome gives me a warnning : ArrayBuffer values are deprecated in Blob Constructor. Use ArrayBufferView instead.
Mobile Chrome gives me an error: illegal constructor
If I change the constructor to work on Chrome it fails on other browsers.

So, these are actually two different problems. The Desktop Chrome warning was a bug in chrome which is fixed since 2013-03-21.
Mobile Chrome is giving you a TypeError because the blob constructor is not supported. Instead you must use the old BlobBuilder API. The BlobBuilder API has browser specific BlobBuilder constructors. This is the case for FF6 - 12, Chrome 8-19, Mobile Chrome, IE10 and Android 3.0-4.2.
var array = new Int8Array([17, -45.3]);
try{
var jpeg = new Blob( [array], {type : "image/jpeg"});
}
catch(e){
// TypeError old chrome and FF
window.BlobBuilder = window.BlobBuilder ||
window.WebKitBlobBuilder ||
window.MozBlobBuilder ||
window.MSBlobBuilder;
if(e.name == 'TypeError' && window.BlobBuilder){
var bb = new BlobBuilder();
bb.append(array.buffer);
var jpeg = bb.getBlob("image/jpeg");
}
else if(e.name == "InvalidStateError"){
// InvalidStateError (tested on FF13 WinXP)
var jpeg = new Blob( [array.buffer], {type : "image/jpeg"});
}
else{
// We're screwed, blob constructor unsupported entirely
}
}
Fiddle: http://jsfiddle.net/Jz8U3/13/

Got it working with your code. I only had to change some little detail:
if(e.name == 'TypeError' && window.BlobBuilder){
var bb = new BlobBuilder();
bb.append(data);
out = bb.getBlob(datatype);
console.debug("case 2");
}
bb.append(data); // data must be with no brackets
My function(constructor) that works now for all browsers:
var NewBlob = function(data, datatype)
{
var out;
try {
out = new Blob([data], {type: datatype});
console.debug("case 1");
}
catch (e) {
window.BlobBuilder = window.BlobBuilder ||
window.WebKitBlobBuilder ||
window.MozBlobBuilder ||
window.MSBlobBuilder;
if (e.name == 'TypeError' && window.BlobBuilder) {
var bb = new BlobBuilder();
bb.append(data);
out = bb.getBlob(datatype);
console.debug("case 2");
}
else if (e.name == "InvalidStateError") {
// InvalidStateError (tested on FF13 WinXP)
out = new Blob([data], {type: datatype});
console.debug("case 3");
}
else {
// We're screwed, blob constructor unsupported entirely
console.debug("Errore");
}
}
return out;
}