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node examples, step by step.
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// run this with "node 0.js" | |
console.log("Hello World"); |
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// running this file will start a basic web server on port 8888 | |
var http = require("http"); | |
http.createServer(function(request, response) { | |
response.writeHead(200, { | |
"Content-Type": "text/plain", | |
}); | |
response.write("Hello Universe"); | |
response.end(); | |
}).listen(8888); | |
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var http = require("http"); | |
var url = require("url"); | |
function onRequest(request, response) { | |
// now we parse the url path to serve content based on the url | |
var pathname = url.parse(request.url).pathname; | |
console.log("Request for " + pathname + " received."); | |
response.writeHead(200, {"Content-Type": "text/plain"}); | |
response.write("Hello World"); | |
if(pathname != '/') { | |
response.write("\n"); | |
response.write("requested path "+pathname); | |
} | |
response.end(); | |
} | |
http.createServer(onRequest).listen(8888); | |
console.log("Server has started."); |
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var http = require("http"); | |
var url = require("url"); | |
var fs = require("fs"); | |
function start() { | |
function onRequest(request, response) { | |
var pathname = url.parse(request.url).pathname; | |
console.log("Request for " + pathname + " received."); | |
response.writeHead(200, {"Content-Type": "text/html"}); | |
if(pathname == "/index.html") { | |
// serve content from a static html file on disk | |
var html = fs.readFileSync("index.html"); | |
response.write(html); | |
} | |
response.end(); | |
} | |
http.createServer(onRequest).listen(8888); | |
console.log("Server has started."); | |
} | |
start(); |
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var http = require("http"); | |
var url = require("url"); | |
var fs = require("fs"); | |
// load a js library from the current folder | |
var snake = require("./script"); | |
function start() { | |
function onRequest(request, response) { | |
var pathname = url.parse(request.url).pathname; | |
console.log("Request for " + pathname + " received."); | |
if(pathname == "/script.js") { | |
// serve static js file with the correct content type header | |
response.writeHead(200, {"Content-Type": "application/javascript"}); | |
var js = fs.readFileSync("script.js"); | |
response.write(js); | |
} | |
else if(pathname == "/index.html") { | |
response.writeHead(200, {"Content-Type": "text/html"}); | |
var html = fs.readFileSync("index.html"); | |
response.write(html); | |
} else { | |
// if no route match is found, return 404 not found. | |
response.writeHead(404, {"Content-Type": "text/html"}); | |
response.write("not found"); | |
} | |
response.end(); | |
} | |
http.createServer(onRequest).listen(8888); | |
console.log("Server has started."); | |
} | |
start(); |
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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'); | |
// showing a basic library example. view contents of some_lib.js to see how exports is used. | |
var new_lib = require('./some_lib.js'); | |
console.log("Imported from some_lib.js:", new_lib); | |
app.get('/', function(req, res){ | |
res.sendFile(path.join(__dirname, 'index.html')); | |
}); | |
http.listen(8888, function(){ | |
console.log('listening on *:8888'); | |
}); | |
app.use(express.static(__dirname)); |
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var express = require('express'); | |
var app = express(); | |
var http = require('http').Server(app); | |
var path = require('path'); | |
// tell express to use EJS templating | |
app.set('view engine', 'ejs'); | |
app.get('/', function(req, res){ | |
// set some data variables to use within the template | |
data = { | |
message: "hello werld", | |
} | |
res.render(path.join(__dirname, 'index.ejs'), data); | |
}); | |
http.listen(8888, function(){ | |
console.log('listening on *:8888'); | |
}); | |
app.use(express.static(__dirname)); |
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<!doctype> | |
<html> | |
<head> | |
<title>hi</title> | |
<script src="script.js"></script> | |
<style> | |
body, html { | |
background: #aaa; | |
font-family: monospace; | |
} | |
</style> | |
</head> | |
<body> | |
<% for(var i=0; i<10; i++) { %> | |
hello <%= message %> <%= i+1 %> <br /> | |
<% } %> | |
</body> | |
</html> |
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<!doctype> | |
<html> | |
<head> | |
<title>hi</title> | |
<script src="script.js"></script> | |
<style> | |
body, html { | |
background: #aaa; | |
font-family: monospace; | |
} | |
</style> | |
</head> | |
<body> | |
hello browser | |
</body> | |
</html> |
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(function(snake){ | |
snake.settings = { | |
height: 400, | |
width: 600, | |
} | |
snake.grid = { | |
size: 15, | |
} | |
snake.snake = null; | |
snake.apples_list = []; | |
snake.apples = { | |
}; | |
snake.add_apple = function(public_id, x, y) { | |
if(x == undefined || y == undefined) { | |
x = 10; | |
y = 10; | |
} | |
snake.apples[public_id] = { | |
x: x, | |
y: y, | |
} | |
snake.apples_list.push(public_id); | |
} | |
snake.remove_apple = function(public_id) { | |
delete snake.apples[public_id]; | |
var i = snake.apples_list.indexOf(public_id); | |
if(i != -1) { | |
snake.apples_list.splice(i, 1); | |
} | |
} | |
})(typeof snake === 'undefined'? this['snake']={}: snake); |
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var a_value = 100; | |
exports.b_value = a_value; |
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