I must be missing something, but can someone tell me why this keeps giving me an error saying that length is null or not an object???

var redoIndex = new Array();
var currentRedo=0;

function analyzeResults()
{
if (redoIndex.length > 0)
{
redoIndex = null;
var redoIndex = new Array();
alert (redoIndex.length);
}
else
alert ("somethingelse");

}

Because when you declare redoIndex as an Array you are just defining the type of variable it is. Since you do not assign any values to it is still a null object. So you get that error when trying to determine the lenght of that null object in your comparison.

Change:

if (redoIndex.length > 0)

To:

if (redoIndex != null)

Michael J

actually that's not the problem... the error is here:

redoIndex = null;
-> var redoIndex = new Array();
alert (redoIndex.length);

removing the var makes everyone happy...

Uh, no it isn't. I copied the code into a file and the error occures on this line:

--> if (redoIndex.length > 0)

I made the change as noted above and it works.

Michael J