（1）下载nodejs
我这边下载的是“node-v0.12.7-linux-x64.tar.gz”这个版本
[root@localhost?bin]#?./node?-v
v0.12.7
/database/nodejs/workspace/helloworld
var http = require(‘http‘);
http.createServer(function (req, res) {
res.writeHead(200, {‘Content-Type‘: ‘text/plain‘});
res.end(‘Hello World\n‘);
}).listen(1337, ‘202.102.83.169‘);
console.log(‘Server running at http://202.102.83.169:1337/‘);
[root@localhost?helloworld]#?cat?first.js?
var?http?=?require(‘http‘);
http.createServer(function?(req,?res)?{
??res.writeHead(200,?{‘Content-Type‘:?‘text/plain‘});
??res.end(‘Hello?World\n‘);
}).listen(1337,?‘202.102.83.169‘);
console.log(‘Server?running?at?http://202.102.83.169:1337/‘);
server.listen(port, [hostname], [backlog], [callback])#
Begin accepting connections on the specified port and hostname.?If the hostname is omitted, the server will accept connections directed to any IPv4 address (INADDR_ANY).
????里面说到如果忽略了hostname，那么服务器将会接受所有IPV4地址的链接，IPv4地址包括127.0.0.1 localhost和本地IP。没有认真看API，以后要注意。那么这样做就可以实现监听本地IP、localhost、127.0.0.1了：
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var?http = require(‘http‘);
http.createServer(function?(req, res) {
??res.writeHead(200, {‘Content-Type‘:?‘text/plain‘});
??res.end(‘Hello World\n‘);
}).listen(1337);
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[root@localhost?bin]#?./node?/database/nodejs/workspace/helloworld/first.js?
Server?running?at?http://127.0.0.1:1337/
原文：http://toknowme.iteye.com/blog/2228181