Is there local file manipulation that\'s been done with JavaScript? I\'m looking for a solution that can be accomplished with no install footprint like requiring Adobe AIR.<
I am only mentioning this as no one mentioned this. There's no programming language I am aware of which allows manipulation of the underlying filesystem. All programming languages rely on OS interrupts to actually get these things done. JavaScript that runs in the browser only has browser "interrupts" to work with which generally does not grant filesystem access unless the browser has been implemented to support such interrupts.
This being said the obvious way to have file system access using JavaScript is to use Node.js which does have the capability of interacting with the underlying OS directly.