Mac上安装node.js

1、下载node for mac并一路默认安装

2、测试成功否

3、copy this file to test（save as javascript file）

var http = require('http');

http.createServer(function(request,response){
    response.writeHead(200,{'Content-Type':'text/plain'});
    response.end('hello world\n');
}).listen(8888);

console.log('Server running at http://127.0.0.1:8888/');

cd到正确路径下

打开浏览器，出现输入地址和端口号

yeah you succeed！