如何安装Node.js

    下面分别介绍在Mac, Ubuntu,Centos以及Windows下安装Node.js.

Mac

    在Mac下，如果你喜欢用homebrew，那么只用一行就可以装好:

brew install node

    否则，只能考虑手工安装了，步骤如下：

git clone git://github.com/ry/node.git
cd node
./configure
make
sudo make install

Ubuntu

sudo apt-get install g++ curl libssl-dev apache2-utils
sudo apt-get install git-core

git clone git://github.com/ry/node.git
cd node
./configure
make
sudo make install

Windows

    用cygwin来安装node，步骤如下:

git clone git://github.com/ry/node.git
cd node
./configure
make
sudo make install

Centos

yum install gcc-c++ openssl-devel
wget --no-check-certificate https://github.com/ry/node/tarball/v0.3.3
tar -xzvf ry-node-v0.3.3-0-g57544ba.tar.gz
cd ry-node-v0.3.3-0-g57544bac1
./configure
make
make install

Hello Node.js!

    写一段小程序例如hello_node.js来验证安装是否正确：

var http = require(\'http\');
http.createServer(function (req, res) {
  res.writeHead(200, {\'Content-Type\': \'text/plain\'});
  res.end(\'Hello Node.jsn\');
}).listen(8124, "127.0.0.1");
console.log(\'Server running at http://127.0.0.1:8124/\');

    用node来运行这段代码

node hello_node.js
Server running at http://127.0.0.1:8124/

    现在，用浏览器打开 http://127.0.0.1:8124/ ， 应该能够看到一条好消息。

参考文档

    How to Install Node.js