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中关村村草 发表于 2012-01-19 21:09

nodejs 小试

nodejs 小试






js中最简单的事件驱动情况为建立一个简单的服务器，来响应HTTP请求





Js代码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.");

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."); 如果你的node.js已经正确安装，那么在运行此js文件时会出现“Server has started.”日志，但是只代表服务器已经创建成功，只有当在浏览器中输入http://localhost:8888来访问此服务器时，控制窗口才会出现"Request received."日志，说明此时程序调用了onRequest方法





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

function onRequest(request, response) {
console.log("Request received.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World");
response.end();
}很显然，此方法作为回调函数被传递到了http.createServer()方法中作为响应HTTP访问的事件被触发,并且给两个request与response参数进行了赋值

梦境照进现实 发表于 2012-01-19 22:25

谢谢分享

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