KJlmfe

var fs = require('fs');
 
//异步读取Hello.txt
fs.readFile('Hello.txt','utf-8', 
  //回调函数里输出Hello.txt里的内容
  function(err, data){
    console.log(data);  
  }
);
 

KJlmfe

var http = require('http'); //导入内置模块http

//调用内置模块http提供的createServer的API
http.createServer(function (req, res) { 
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(1337, '127.0.0.1');

console.log('Server running at http://127.0.0.1:1337/');