学习 node.js 搭建web服务器

 1 var http = require(‘http‘);
 2 var url = require(‘url‘);
 3 var hostname = ‘127.0.0.1‘;
 4 var port = 3000;
 5 var bodystr = "";
 6 var server = http.createServer(function(req, res){
 7   res.statusCode = 200;
 8   res.setHeader(‘Content-Type‘, ‘text/plain‘);
 9   var pathname = url.parse(req.url).pathname;
10   if(pathname === "/"){
11         bodystr = "Hello World\n";
12   }else{
13         bodystr = req.url;
14   }
15   res.end(bodystr);
16 }).listen(port, hostname, function(){
17   console.log(`Server running at http://${hostname}:${port}/`);
18 });