Question

At the JSON site it says

JSON does not support cyclic data
structures, so be careful to not give
cyclical structures to the JSON
stringifier.

What does it mean by this? Can someone give me an example of such a data structure in Javascript?

Answer 1

var cyclic = {};
cyclic.somekey = cyclic;
cyclic.another = "Hello world!";

Now you can do this, for example:

alert(cyclic.somekey.somekey.somekey.another);