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OpenLayers 2.10 by Erik Hazzard

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Building the OpenLayers Library file

OpenLayers provides an easy way to configure the library file that gets included in your page. Throughout the book, we've been including a file called OpenLayers.js, which is a file that contains all the functionality (classes, functions, and so on) that OpenLayers provides. So far, this has been great—we've been developing up to this point, so we want to be sure that we have access to all the classes that we may use. What's my point here?

Always try to serve small files

Well, the OpenLayers.js file we've been using is around 920 KB! That's almost a megabyte—quite a large file to load, especially since it contains only JavaScript code. Even though large file sizes aren't as much of an issue as they were years ...

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