You can check the JSON syntax in SLAnalyzer. By checking the syntax, you figure out the errors in the syntax, and know whether the syntax can be processed or not.
Download the SLAnalyzer by the ftp://ftp.novell.com/pub/SLAnalyzer/SLAnalyzer.exe path.
Run the program.
Select JSON Console in Tools tab.
Specify the syntax in the top Window of the JSON Consol.
Right-click on the syntax and select Process.
If the JSON syntax can be processed, JSON data will be displayed in the bottom Window.