html5 - Nodejs + Rickshaw: src= reference not working -


i trying make app generates 'live' graphs of twitter word counts, trying extend , exercise in chapter 14 of nodejs in 24 hours. decided use 'rickshaw' , thought i'd start getting simple example working. however, while can simple html page load, can't graph display. firefox debug indicates: "referenceerror: rickshaw not defined [break on error] graph = new rickshaw.graph( { " . means there referencing error after couple of hours of googling , reading, i'm not seeing it. directory structure correct; npm installed modules correctly, no errors. can see i'm missing?

note: new js/node , while book working in express 2.x, have been working in express 3.x, not sure if i've got translation correct in cases. code follows:

package.json

    {     "name":"socket.io-twitter-example",     "version": "0.0.1",     "private": "true",     "dependencies": {         "express": ">=2.5.4",         "rickshaw": ">=1.1.0"         }     }

app.js

    var express = require('express'),         rickshaw = require('rickshaw'),         app = express(),         http = require('http'),         server = http.createserver(app)      server.listen(3000);     app.get('/', function (req,res) {         res.sendfile(__dirname + '/index.html');     });

index.html

    <!doctype html>     <html lang="eng">         <head>             <meta charset="utf-8" />             <title>socket.io twitter example</title>         </head>         <body>             <h1>rickshaw example</h1>               <div id="chart"></div>             <ul class="tweets"></ul>              <script type="text/javascript" src="node_modules/rickshaw/vendor/d3.v2.js"></script> //don't think "node_modules/" required, doesn't work without either             <script type="text/javascript" src="node_modules/rickshaw/rickshaw.min.js"></script>              <script>                 graph = new rickshaw.graph( {                     element: document.queryselector("#chart"),                      width: 285,                      height: 180,                      series: [{                         color: 'steelblue',                         data: [                              { x: 0, y: 40 },                              { x: 1, y: 49 },                              { x: 2, y: 38 },                              { x: 3, y: 30 },                              { x: 4, y: 32 } ]                     }]                 });                 graph.render();             </script>            </body>     </html>

you need configure express.static middleware express knows static resources js , css files:

app.use(express.static( __dirname + '/public'));

its common put such resources public folder (as shown in example above) or static folder.

if create public folder , organize like

app.js public   rickshaw     vendor       d3.v2.js     rickshaw.min.js

then you'll able have files correctly loaded in html using

<script type="text/javascript" src="/rickshaw/vendor/d3.v2.js"></script> <script type="text/javascript" src="/rickshaw/rickshaw.min.js"></script>

see this section of express docs more info on , examples of middleware.


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