Created
October 8, 2012 00:58
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| L.CartoDB = L.GeoJSON.extend({ | |
| initialize: function (url, options) { | |
| L.Util.setOptions(this, options); | |
| this._layers = {}; | |
| var self = this; | |
| if (url) { | |
| this._jsonp(url, function(geojson){ | |
| self.addData(geojson); | |
| }); | |
| } | |
| }, | |
| _jsonp: function(url, callback){ | |
| // Create random function name | |
| var randomName = ''; | |
| var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_'; | |
| var length = 10; | |
| while (length--) { | |
| randomName += chars.charAt(Math.floor(Math.random() * chars.length)); | |
| } | |
| // Called when data is loaded | |
| L.CartoDB[randomName] = function(data) { | |
| callback(data); | |
| delete L.CartoDB[randomName]; | |
| script.parentNode.removeChild(script); | |
| } | |
| // Add script to page | |
| var script = document.createElement('script'); | |
| script.src = url + '&format=GeoJSON&callback=L.CartoDB.' + randomName; | |
| script.async = true; | |
| script = document.getElementsByTagName('head')[0].appendChild(script); | |
| } | |
| }); | |
| L.cartoDB = function (url, options) { | |
| return new L.CartoDB(url, options); | |
| }; |
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