I'm trying to let the user download some data as a CSV (text) file, using Javascript and the HTML5 Download attribute (http://caniuse.com/#feat=download).
The data is formed in an array, and then added to a new Blob object.
It works perfectly in Chrome and Opera, but does not work at all in Firefox.
Original example I am attempting to copy: http://blog.eliacontini.info/post/79860720828/export-to-csv-using-javascript-the-download-attribute
Fiddle: http://jsfiddle.net/8wos7cf8/5/
Javascript:
$('#downloadButton').click(function () { // some data to export var data = [{ "title": "Book title 1", "author": "Name1 Surname1" }, { "title": "Book title 2", "author": "Name2 Surname2" }, { "title": "Book title 3", "author": "Name3 Surname3" }, { "title": "Book title 4", "author": "Name4 Surname4" }]; // prepare CSV data var csvData = new Array(); csvData.push('"Book title","Author"'); data.forEach(function (item, index, array) { csvData.push('"' + item.title + '","' + item.author + '"'); }); // download stuff var fileName = "data.csv"; var buffer = csvData.join("\n"); var blob = new Blob([buffer], { "type": "text/csv;charset=utf8;" }); var link = document.createElement("a"); if (link.download !== undefined) { // feature detection // Browsers that support HTML5 download attribute link.setAttribute("href", window.URL.createObjectURL(blob)); link.setAttribute("download", fileName); link.click(); } else { alert('CSV export only works in Chrome, Firefox, and Opera.'); } });
HTML:
<div class="toggle-button" id="downloadButton"><span>Export to CSV</span></div>
When I add an alert with:
alert(window.URL.createObjectURL(blob));
I get this result in Firefox:
...and this result in Chrome/Opera:
So it seems like it omits the URL path in Firefox for some reason.
You might try adding the element to the DOM before triggering the click:
document.body.appendChild(link); link.click(); document.body.removeChild(link);
This worked for me in Firefox 34
jsfiddle: http://jsfiddle.net/8wos7cf8/7/
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