Question

I have some JSON data but all the keys are in UPPER case. How to parse them and convert the keys to lower? I am using jQuery.

for example:

JSON data:

{"ID":1234, "CONTENT":"HELLO"}

Desired output:

{id:1234, content:"HELLO"}

Answer 1

How about this:

json.replace(/"([^"]+)":/g, 
    function($0, $1) { return ('"' + $1.toLowerCase() + '":'); }
);

The regex captures the key name $1 and converts it to lower case.

Live demo: http://jsfiddle.net/bHz7x/1/

[edit] To address @FabrícioMatté’s comment, another demo that only matches word characters: http://jsfiddle.net/bHz7x/4/