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July 6, 2015 18:34
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Intro to Node!
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| // run this with "node hello_world.js" | |
| console.log("Hello World", __dirname); |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <script src="../script.js"></script> | |
| <title>hi</title> | |
| <style> | |
| body, html { | |
| background: #aaa; | |
| font-family: monospace; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| hello browser | |
| </body> | |
| </html> |
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| var http = require('http'); | |
| var makeRequest = function(url, callback) { | |
| var callback_inner = function(response) { | |
| var str = ''; | |
| //another chunk of data has been recieved, so append it to `str` | |
| response.on('data', function (chunk) { | |
| str += chunk; | |
| }); | |
| //the whole response has been recieved, so we just print it out here | |
| response.on('end', function () { | |
| callback(str); | |
| }); | |
| } | |
| var options = { | |
| host: url, | |
| path: '/', | |
| }; | |
| console.log("before request"); | |
| http.request(options, callback_inner).end(); | |
| console.log("after request"); | |
| } | |
| module.exports = { | |
| makeRequest: makeRequest, | |
| } | |
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| // now using express to handle routing | |
| var express = require('express'); | |
| var app = express(); | |
| var http = require('http').Server(app); | |
| var path = require('path'); | |
| var request = require('./request2'); | |
| app.get('/', function(req, res){ | |
| res.sendFile(path.join(__dirname, 'index.html')); | |
| }); | |
| app.get('/reddit', function(req, res){ | |
| var responseHandler = function(response){ | |
| res.send(response); | |
| } | |
| request.makeRequest('www.reddit.com', responseHandler); | |
| }); | |
| http.listen(8888, function(){ | |
| console.log('listening on *:8888'); | |
| }); | |
| app.use(express.static(path.join(__dirname, 'public'))); |
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| //Lets require/import the HTTP module | |
| var http = require('http'); | |
| var fs = require('fs'); | |
| //Lets define a port we want to listen to | |
| const PORT = 8080; | |
| //We need a function which handles requests and send response | |
| function handleRequest(request, response){ | |
| if(request.url == "/") { | |
| fs.readFile("./index.html", function(err, html) { | |
| response.setHeader("Content-Type", "text/html"); | |
| response.end(html); | |
| }); | |
| } else { | |
| response.statusCode = 404; | |
| response.end('not found!!'); | |
| } | |
| } | |
| //Create a server | |
| var server = http.createServer(handleRequest); | |
| //Lets start our server | |
| server.listen(PORT, function(){ | |
| //Callback triggered when server is successfully listening. Hurray! | |
| console.log("Server listening on: http://localhost:%s", PORT); | |
| }); |
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