yunlongzha_try_nodejs/1.js

try it

//引用了一个module
var http=require('http');
//创建一个服务器
http.createServer(function(req,res){
	//req表示request
	//res表示response
	res.writeHead(200,{'Content-Type':'text/plain'});
	res.end('Helo World\n');  //返回 Hello World
	res.end((1+2+3).toString()) //返回6
}).listen(80,'127.0.0.1');
console.log('Server running at http://127.0.0.1:81/')