Trusted JSON Parser, why doesnt browsers themselves provide one?
yannis: You can check if native JSON is available by:     if (typeof(JSON) === 'object') { 
            alert('native JSON may be available.');
      }


Three major browsers already include support for native JSON parsing: IE8, Firefox 3.5, and Chrome 3.Safari 4 does not currently support the standard, but its underlying engine (WebKit) has recently implemented it. Hopefully the feature will make its way to Safari soon.