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 using java script?
If the user trusts you, you can can create XML file directly in his filesystem.
Example code for Mozilla Firefox:
function mozillaSaveFile(filePath,content)
{
if(window.Components) {
try {
netscape.security.PrivilegeManager.enablePrivilege(UniversalXPConnect);
var file = Components.classes[@mozilla.org/file/local;1].createInstance(Components.interfaces.nsILocalFile);
file.initWithPath(filePath);
if(!file.exists())
file.create(0,0664);
var out = Components.classes[@mozilla.org/network/file-output-stream;1].createInstance(Components.interfaces.nsIFileOutputStream);
out.init(file,0x20|0x02,00004,null);
out.write(content,content.length);
out.flush();
out.close();
return true;
} catch(ex) {
return false;
}
}
return null;
}
if you need support for all browsers, see how it is implemented in http://www.tiddlywiki.com
EDIT: This doesn't work for Firefox 17+ because changing privileges was deemed unsafe and removed. see here for more details: https://bugzilla.mozilla.org/show_bug.cgi?id=546848#c57
