服务器（nodejs）：
a. 要点：

b. 完整代码：

var http = require('http');var fs = require('fs');var url = require('url');http.createServer( function (request, response) { var pathname = url.parse(request.url).pathname;console.log("Request for " + pathname + " received.");response.writeHead(200, {'Content-Type': 'text/html'}); fs.readFile('./head.html',function(e,head){ fs.readFile(pathname.substr(1), function (err, data) { fs.readFile('./foot.html',function(e,foot){ console.log(head.toString()) console.log(foot.toString()) response.write("<!DOCTYPE html>"); response.write("<html lang=\"en\">"); response.write("<head>"); response.write("<meta charset=\"UTF-8\">"); response.write("<title>标题一</title>"); response.write("</head>"); response.write(data.toString()); response.write(foot.toString()); response.end(); }) }); })}).listen(3000);console.log('Server running at http://127.0.0.1:3000/');前端html：
a. head.html：

<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>标题</title></head>

b. index.html：

<body><h2>身体</h2><p>这是一段文字</p></body>

c. foot.html：

<script></script></html>