Question

I’m using json2.js for this:

            var str = '{"elements":[{"text": "", "colour": "#66AA50", "type": "line"}]}';
            var obj = JSON.parse(str);
            var str2 = JSON.stringify(obj);
            var obj2 = JSON.parse(str2);

Weird thing is that obj2 is a broken version of obj, i.e it’s not identical to it.

In my case obj2 has only one field, named elements which is set to string

"[{"text": "", "colour": "#66AA50", "type": "line"}]"

Tested in FF 3.0.14

The following scenario works fine if implemented via Prototype’s .toJSON() / .evalJSON()

Is there something wrong with my code or JSON library?

Thanks!

Answer 1

Works for me (FF3.5)

var str = '{"elements":[{"text": "", "colour": "#66AA50", "type": "line"}]}';
            var obj = JSON.parse(str);
            var str2 = JSON.stringify(obj);
            var obj2 = JSON.parse(str2);

Equals = function(a,b)
{
  //Check if the arrays are undefined/null
  if(!a || !b)
    return false;

  //first compare their lengths
  if(a.length == b.length)
  {
    //go thru all the vars
    for(var i = 0; i < a.length;i++)
    {
      //if the var is an array, we need to make a recursive check
      //otherwise we'll just compare the values
      if(typeof a[i] == 'object') {
        if(!Equals(a[i],b[i]))
          return false;
      }
      else if(a[i] != b[i])
        return false;
    }
    return true;
  }
  else return false;
}

alert (Equals (obj,obj2)); //true
alert (JSON.stringify(obj) == JSON.stringify(obj2)); //true
alert (obj == obj2); //false (different pointer)