[OpenLayers-Users] Result of expression 'map' [undefined] is not an object.

[P Kishor]

On Mon, Oct 5, 2009 at 12:02 AM, Roald de Wit <roald.dewit at lisasoft.com> wrote:
> Hi,
>
> On 05/10/09 14:53, P Kishor wrote:
>> On Sun, Oct 4, 2009 at 10:44 PM, Stephen Woodbridge
>> <woodbri at swoodbridge.com>  wrote:
>>
>>> Kishor,
>>>
>>> I'm pretty sure that the trailing common is not portable across browsers, as
>>> I'm sure I have had problems with that in the past. It is a common model
>>> that I learned in Perl, but it is not supported by most other languages. :(
>>>
>> Yup, I too picked up that good habit in Perl, and thoroughly enjoy
>> being lazy with it. That said, I am doing development right now and
>> testing in both Safari 4.x and Firefox 3.5x, and the trailing comma
>> seems to work fine. I don't have access to any version of IE (well,
>> not easily anyway) so I haven't really tested.
>>
>> Can someone please confirm the browsers/versions in which the trailing
>> comma croaks?
>>
>
> This is a confirmation: using a trailing comma in an object (curly
> brackets) is an easy way to bring IE6/7/8 to its knees and hard to debug
> without developer tools.
> Any other browser (that I know of) has no issues with it, only IE.

Many thanks Roald.


(eyes gleam at the prospect of being able to harass IE users)



>
> Regards,
>
> Roald
>
>
>>
>>
>>> -Steve
>>>
>>> P Kishor wrote:
>>>
>>>> On Sun, Oct 4, 2009 at 12:13 PM, Andreas Hocevar<ahocevar at opengeo.org>
>>>> wrote:
>>>>
>>>>> Also make sure that you don't have extra commas at the end of object
>>>>> definitions.
>>>>>
>>>>>
>>>> if you mean, do like this
>>>>
>>>> var foo = { a: 'blah', b: 'blech' };
>>>>
>>>> and not like
>>>>
>>>> var foo = { a: 'blah', b: 'blech', };
>>>>
>>>> let me ask you, why not? Javascript doesn't mind, and it makes my
>>>> programming a lot easier to let there be a comma at the end.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> Regards,
>>>>> Andreas.
>>>>>
>>>>> Stephen Woodbridge wrote:
>>>>>
>>>>>> Nicholas Efremov-Kendall wrote:
>>>>>>
>>>>>>
>>>>>>> Hi all,
>>>>>>>
>>>>>>> I'm getting the following error in what used to be functional
>>>>>>> code Result of expression 'map' [undefined] is not an object.
>>>>>>>
>>>>>>> It's breaking on the statement map.addLayer(cities). Here's the
>>>>>>> exerpted
>>>>>>> code that I've added around this. I can add a stripped down version of
>>>>>>> the rest, but it's bulky and I've only messed with the following bits.
>>>>>>> Any suggestions as to what's causing this error?
>>>>>>>
>>>>>>> var styleMap = new OpenLayers.StyleMap(
>>>>>>> {'default':OpenLayers.Util.applyDefaults(
>>>>>>> {
>>>>>>>       label: '${Name}',
>>>>>>>       strokeWidth:1,
>>>>>>>       strokeColor:"#CCCCCC",
>>>>>>>       fillColor: "green",
>>>>>>> })
>>>>>>> }
>>>>>>>    );
>>>>>>> };
>>>>>>>
>>>>>>> var cities = new OpenLayers.Layer.GML
>>>>>>> ("7th Century Cities", "data/cities.gml",
>>>>>>> {
>>>>>>> styleMap: styleMap,
>>>>>>> projection: new OpenLayers.Projection("EPSG:4326"),
>>>>>>> format: OpenLayers.Format.GML,
>>>>>>> label: "${Name}",
>>>>>>> }
>>>>>>> );
>>>>>>> map.addLayer(cities);
>>>>>>>
>>>>>>>
>>>>>> Where is "var map" defined. It sounds like it is not in the visible
>>>>>> scope of the above code.
>>>>>>
>>>>>> -Steve W
>>>>>> _______________________________________________
>>>>>> Users mailing list
>>>>>> Users at openlayers.org
>>>>>> http://openlayers.org/mailman/listinfo/users
>>>>>>
>>>>>>
>>>>> --
>>>>> Andreas Hocevar
>>>>> OpenGeo - http://opengeo.org/
>>>>> Expert service straight from the developers.
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at openlayers.org
>>>>> http://openlayers.org/mailman/listinfo/users
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>>
>
>
> --
> Roald de Wit
> Software Engineer
> roald.dewit at lisasoft.com
>
> Commercial Support for Open Source GIS Software
> http://lisasoft.com/LISAsoft/SupportedProducts/
>
>
>
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-- 
Puneet Kishor http://www.punkish.org
Carbon Model http://carbonmodel.org
Charter Member, Open Source Geospatial Foundation http://www.osgeo.org
Science Commons Fellow, http://sciencecommons.org/about/whoweare/kishor
Nelson Institute, UW-Madison http://www.nelson.wisc.edu
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