pulling multiple entry's with jscript

I am new to jscript and trying to learn how to pull multiple entry's from a table. I know with php you can use a while loop but that doesn't seem to work with jscript. Here is what I have so far.

var sSql = "select nIndex,sDescription from StatisticalDiskIdentification " +
"JOIN PivotStatisticalMonitorTypeToDevice ON " +
"StatisticalDiskIdentification.nPivotStatisticalMonitorTypeToDeviceID = " +
"PivotStatisticalMonitorTypeToDevice.nPivotStatisticalMonitorTypeToDeviceID " +
"where (PivotStatisticalMonitorTypeToDevice.nStatisticalMonitorTypeID='2') and " +
"PivotStatisticalMonitorTypeToDevice.nDeviceID = " + nDeviceID;

while (oRs = oDb.Execute(sSql)){

if ( !oRs.EOF )
{
// Display various columns in the debug log (Event Viewer).
var sDisplay;
nIndex = "" + oRs("nIndex");
Context.LogMessage("nIndex=" + nIndex);
sDesc = "" + oRs("sDescription");
Context.LogMessage("Description =" + sDesc);
}
Context.SetResult( 0, " Ok");
oRs.MoveNext();
}

Thanks for any help

You should move Execute outside of the loop if your intention is to iterate through the recordset.
!oRs.EOF should be the loop condition instead.