In Firefox, the following code works with "arry = eval(json1);" in the 
penultimate line but fails with a Firebug json.parse error when "arry = 
JSON.parse(json1);" is used. I guess I've been staring at this too long, 
what is upsetting JSON.parse()?

var json1 = {
   "id":37008,
   "natoms":1000,
   "nframes":1000,
   "atomType":[0,1],
   "frames":
      [{
       "position":[[10.1,20.1,30.1], [20.1,30.1,30.1]],
        "charge":[0.5, 4.3],
        "nbonds":1,
        "bonds":[0,1]
      }]
}
arry = JSON.parse(json1);
window.alert(arry.frames[0].position[1][1]);

On 12/22/2010 07:44 PM, SteveYoungTbird wrote:
> In Firefox, the following code works with "arry = eval(json1);" in the
> penultimate line but fails with a Firebug json.parse error when "arry =
> JSON.parse(json1);" is used. I guess I've been staring at this too long,
> what is upsetting JSON.parse()?
>
> var json1 = {
> "id":37008,
> "natoms":1000,
> "nframes":1000,
> "atomType":[0,1],
> "frames":
> [{
> "position":[[10.1,20.1,30.1], [20.1,30.1,30.1]],
> "charge":[0.5, 4.3],
> "nbonds":1,
> "bonds":[0,1]
> }]
> }
> arry = JSON.parse(json1);
> window.alert(arry.frames[0].position[1][1]);

Stupid of me. The variable json1 is already an object and therefore it 
doesn't need parsing, "window.alert(json1.frames[0].position[1][1]);" works.