how to download a file on Chrome without auto renaming file to "download"?

I use javascript to generate a file and download it. It seems, that depending on the version of chrome, the download file names can be auto renamed to 'download'. Is there a way to avoid it? this is my code: ``` var link = document.createElement("a"); link.setAttribute("href", 'data:application/octet-stream,' + 'file content here'); link.setAttribute("download", 'file1.txt'); link.click(); ``` This is not a duplicated question, because I'm using the latest Chrome and the previously suggested hyperlink is exactly what I'm using. I think, Chrome v34 works fine, but once my Chrome auto updated to v35, it went back to 'download' file name.