var http = require(“http”);

http.createServer(function(request, response){
response.writeHead(200,{“Content-Type”:”text/plain”});
response.write(“Hello World”);
response.end();
}).listen(8888);

node server.js

二
var http = require(“http”);

function onRequest(request, response){
console.log(“Request received.”);
response.writeHead(200,{“Content-Type”:”text/plain”});
response.write(“Hello World”);
response.end();
}

http.createServer(onRequest).listen(8888);

console.log(“Server has started.”);

当我们在服务器访问网页时，我们的服务器可能会输出两次“Request received.”。那是因为大部分服务器都会在你访问 http://localhost:8888 /时尝试读取 http://localhost:8888/favicon.ico

三 创建模块 server.js
var http = require(“http”);

function start(){
function onRequest(request, response){
console.log(“Request received.”);
response.writeHead(200,{“Content-Type”:”text/plain”});
response.write(“Hello World”);
response.end();
}

http.createServer(onRequest).listen(8888);
console.log(“Server has started.”);
}

exports.start = start;

创建 index.js 文件并写入以下内容：
var server = require(“./server”);
server.start();