node.js调用函数

var    http    =    require(‘http‘);         
http.createServer(function    (request,    response)    {      
        response.writeHead(200,    {‘Content-Type‘:    ‘text/html;    charset=utf-8‘});      
    if(request.url!=="/favicon.ico"){    //清除第2此访问  

        fun1(response); //调用函数

        response.end(‘‘);    
    }  
}).listen(8000);      
console.log(‘Server    running    at    http://127.0.0.1:8888/‘);

//本地函数
function fun1(res){   //res形参 是给客户端传输响应数据的response
    console.log("fun1");
    res.write("hello,我是fun1");
}