[OpenLayers-Users] Extensions on OpenLayers code

Christopher Schmidt crschmidt at metacarta.com
Wed Apr 2 14:16:00 EDT 2008


On Wed, Apr 02, 2008 at 10:57:31AM -0600, Linda Rawson wrote:
> I have several custom enhancements I have made to the source code.  With the
> onset of a new release I would like to put these in a separate file and
> "override" the code that is in the release.  For instance I might want to
> add the following function, just an example, it might already be in there to
> Map.js
> 
> getLayerByName: function(name) {
>        var foundLayer = null;
>        for (var i = 0; i < this.layers.length; i++) {
>            var layer = this.layers[i];
>            if (layer.name == name) {
>                foundLayer = layer;
>            }
>        }
>        return foundLayer;
>    },
> Would I do something like the following in a .js file to be called after
> Openlayers.js?
> 
> Map.prototype.getLayerByName=function(name) {
>        var foundLayer = null;
>        for (var i = 0; i < this.layers.length; i++) {
>            var layer = this.layers[i];
>            if (layer.name == name) {
>                foundLayer = layer;
>            }
>        }
>        return foundLayer;
>    }
> 

Yes, this is what I would do.

Regards,
-- 
Christopher Schmidt
MetaCarta



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