PUBLIC MARKS with tags OpenStreetmap & javascript

OpenStreetMap.org’s RESTful API allows anyone to access data on their continually growing collaborative map of the world… in XML. This is great for most applications, but if you’re working in JavaScript (as we are), XML might as well be greek. We need JSON.

The above map is styled dynamically in the browser using a javascript implementation of the core architecture of the open source mapnik library (ie Layers, Styles, Rules and Filters plus a couple of Symbolizers). (Implemented by eye-balling the XML and reading the wiki, mainly).

I've been experimenting with some javascript classes that mimic the structure of mapnik's Layer/Style/Rule classes and render OSM data (via GeoJSON) to a <canvas> element. I've also finally taken a look at how github works, so I've decided to share the initial code there in case people are interested. If you don't want to check the code out for yourself there's a demo page here (tested in Firefox and Safari only, so far).