Blob download is not working in IE
JavascriptInternet ExplorerAngularjsBlobCompatibilityJavascript Problem Overview
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?
Javascript Solutions
Solution 1 - Javascript
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();
}
Solution 2 - Javascript
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);
}
Solution 3 - Javascript
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.
Solution 4 - Javascript
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();
}
};
Solution 5 - Javascript
What's your IE browser version? You need a modern browser or IE10+ http://caniuse.com/bloburls
Solution 6 - Javascript
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);
Solution 7 - Javascript
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
);
}
};
Solution 8 - Javascript
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);
}
}
Solution 9 - Javascript
Try to use this instead : var blob = file.slice(0, file.size);
Solution 10 - Javascript
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);
});
}
});
}
Solution 11 - Javascript
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.