JSON & sub records

[1DMF]

I've been toying with idea of using JSON for my final working applicatation but am having a little trouble getting my head round it all.

I've been reading this link

http://www.json.org/js.html

I'm a bit confused over this command

var myObject = JSON.parse(myJSONtext, reviver);

If I had sub set records within the object, how would I know?

I'm assuming from this that after parsing the JSON, myObject would be an array for each master record with the following syntax

document.write(myObject[0].fldname1);
document.write(myObject[0].fldname2);
document.write(myObject[1].fldname1);
document.write(myObject[1].fldname2);

etc.

But what if fldname3 was a sub record set?

How do I test for existing records or if there are no records, how do you build the JSON data to show it should be a sub set of records but not necessarily containing any sub records.

I'm guessing you could do something like this to access it, but am unsure how I build the data structure to start with.

if (myObject[RecID].fldname3.length > 0){
   for (i=0; i<myObject[RecID].fldname3.length; i++)
   {
     document.write(myObject[RecID].fldname3[i].fldname1);
     document.write(myObject[RecID].fldname3[i].fldname2);
     document.write(myObject[RecID].fldname3[i].fldname3);
   }
}

Am I on the right track?

Cheers
1DMF

"In complete darkness we are all the same, only our knowledge and wisdom separates us, don't let your eyes deceive you."

"If a shortcut was meant to be easy, it wouldn't be a shortcut, it would be the way!"

Google Rank Extractor -> Perl beta with FusionCharts