How do I Save A Dictionary to JSON File (for Mobile Games)?

I am making a game which uses stars rating that changed everytime the player got a new high score. I load each stages' star as JSON file, but how to save the updated data to the JSON file? Thanks!

Do you want this file on a server or on each user's computer? Because you cannot save files to user's hard-drives (for security reasons).

PHP is a nice easy way to save files on a server though. Java works well too. You might even be able to use an AJAX file transmission kind of scheme too (something like a file upload).

SOLVED:

I'm using LocalStorage, which I loaded at the first time from JSON.

Thanks for replying, gumshoe2029!