How to create and download an XML file on the fly using javascript?

Question

I got a requirement as following:

There is a link on a web page. As user clicks on link it should create a file on the fly and a download box pops up. How to do it u

Answer 1

After try what Andreas said I will add something:

Script:

function createAndOpenFile(){
    var stupidExample = 'something';
    document.open('data:Application/octet-stream,' + encodeURIComponent(stupidExample));
}

You have a link like this, note the new download atribute, with it you put the file name.

Donwload

It works at least in Chrome 27 and Firefox 21.

Improved are welcome :-)