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Javascript TypeError: 'undefined' is not an object (evaluating...

Hi All,

Can anyone help with the school boy error please... I have declared a new object and then return stuff for the property from the function _Mgt_TrackCurrentSessionLocalStorageManagement().

Now, I know there isn't anything to return currently so I believe the object _Mgt_TrackSession should be undefined.

Can anyone see why it would trip up which creating the first property of my object?

_Mgt_TrackSession = new Object();
_Mgt_TrackSession = _Mgt_TrackCurrentSessionLocalStorageManagement("get");

if (typeof(_Mgt_TrackSession) === 'undefined') 
{
     _Mgt_TrackSession.A = intAppID;
     _Mgt_TrackSession.U = intUserID;
     _Mgt_TrackSession.P = [];
}

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Error:

TypeError: 'undefined' is not an object (evaluating '_Mgt_TrackSession.A = intAppID')

ASKER CERTIFIED SOLUTION

onlyaymie

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rito1

ASKER

Thanks onlyaymi, I will give this a try as soon as I get in the office in the morning GMT.

I didn't think I would have to declare it again but it does make sense.. On some occasions my function will return an object for _Mgt_TrackSession. So if there is nothing to return I will need to instantiate it again.. Is that right?

onlyaymie

I believe so, b/c the _Mgt_TrackSession is set to whatever the function returns, so if the function returns nothing (undefined), _Mgt_TrackSession's value is then undefined, not the object you originally instantiated it as.

rito1

ASKER

Perfect, thank you for your time.