Created
January 29, 2014 15:36
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Example of running D3 in Node without requiring Python and Contextify. The example is a slightly modified version of the example at http://mango-is.com/blog/engineering/pre-render-d3-js-charts-at-server-side.html with some code from https://github.com/mbostock/d3/blob/master/index.js.
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| var fs = require('fs') | |
| , jsdom = require('jsdom-nogyp') | |
| , htmlStub = '<html><head></head><body><div id="dataviz-container"></div><script src="./d3.min.js"></script></body></html>' | |
| , document = jsdom.jsdom(htmlStub) | |
| , window = document.createWindow() | |
| , globals = {}; | |
| jsdom.env({ features : { QuerySelector : true }, html : htmlStub, done : function(errors, win) { | |
| // stash globals | |
| if ('window' in global) globals.window = global.window; | |
| global.window = window; | |
| if ('document' in global) globals.document = global.document; | |
| global.document = document; | |
| // https://github.com/chad3814/CSSStyleDeclaration/issues/3 | |
| var CSSStyleDeclaration_prototype = window.CSSStyleDeclaration.prototype, | |
| CSSStyleDeclaration_setProperty = CSSStyleDeclaration_prototype.setProperty; | |
| CSSStyleDeclaration_prototype.setProperty = function(name, value, priority) { | |
| return CSSStyleDeclaration_setProperty.call(this, name + "", value == null ? null : value + "", priority == null ? null : priority + ""); | |
| }; | |
| var d3 = require('./d3.min.js'); | |
| var el = window.document.querySelector('#dataviz-container') | |
| , body = window.document.querySelector('body') | |
| , circleId = 'a2324'; | |
| d3.select(el) | |
| .append('svg:svg') | |
| .attr('width', 600) | |
| .attr('height', 300) | |
| .append('circle') | |
| .attr('cx', 300) | |
| .attr('cy', 150) | |
| .attr('r', 30) | |
| .attr('fill', '#26963c') | |
| .attr('id', circleId); | |
| var clientScript = "d3.select('#" + circleId + "').transition().delay(1000).attr('fill', '#f9af26')"; | |
| d3.select(body) | |
| .append('script') | |
| .html(clientScript); | |
| var svgsrc = window.document.innerHTML | |
| fs.writeFile('index.html', svgsrc, function(err) { | |
| if(err) { | |
| console.log('error saving document', err) | |
| } else { | |
| console.log('The file was saved!') | |
| } | |
| }); | |
| // restore globals | |
| if ('window' in globals) global.window = globals.window; | |
| else delete global.window; | |
| if ('document' in globals) global.document = globals.document; | |
| else delete global.document; | |
| } | |
| }); |
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