[andor]

His point was that this number is too large to store it in a Javascript Number variable (which is a IEEE 754 double).

[shawnz]

OK, so the provided number format is not sufficient for the kind of numbers he is trying to deal with. So instead you would represent it as a string and handle the encoding/decoding of that number yourself. How is that different from the XML way where there is no provided number format to begin with, and everything is a string?

[boomlinde]

That's completely irrelevant. Grok the JSON specs and reconsider what the javascript number format has to do with it.