Re: [OpenLayers-Users] Error in getfeature info

[Phil Scadden]

function pickRoadid(event) {
        popupClear();
   if (event.features && event.features.length) {
   alert("hi");
      var val = event.features[0].attributes.id;
      document.getElementById('fid').value = val;
   }
}
But its returning me an error
Cannot set property 'value' of null .
So pickRoadid is being called. Use firebug or similar debugger to set a 
breakpoint at var val = ....
and examine what you are actually getting in features. More likely 
however the problem is with the DOM. Whatever beast is identified by 
'fid' may not have a data value. Evaluate document.getElementById('fid') 
and see whether it is what you expect.

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