[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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