[Node.js]001.安装与环境配置

安装与环境配置

第一步：下载安装文件
第二步：安装nodejs
第三步：npm安装
第四步：安装相关环境
第五步：安装CoffeeScript
第六步：CoffeeScript测试实例

第一步：下载安装文件

下载node.js，如下图：

第二步：安装nodejs

下载完成之后，双击安装文件，开始安装nodejs，自定义安装在D:\dev\nodejs下面。
在cmd控制台输入：node -v，控制台将打印出：v0.10.28，出现版本提示表示安装成功。
该引导步骤会将node.exe文件安装到D:\dev\nodejs\目录下，并将该目录添加进PATH环境变量。

第三步：npm安装

由于新版的nodejs已经集成了npm，所以之前npm也一并安装好了。同样可以使用cmd命令行输入"npm -v"来测试是否成功安装。如下图，出现版本提示表示安装成功。

第四步：安装相关环境

npm install express -g 

npm install jade -g

npm install mysql -g

默认情况下上述组件都是安装在D:\dev\nodejs\node_modules文件夹下，这也是nodejs相关组件的自动查找路径。

第五步：安装CoffeeScript

npm install coffee-script -g

确认安装的命令：coffee -v，出现版本号表示成功安装。

第六步：CoffeeScript测试实例

新建cs.js文件，输入:

for i in [0...5]

console.log "hello #{i}"

在该目录下运行"coffee cs.js" 输出:

D:\>coffee cs.js

hello 0

hello 1

hello 2

hello 3

hello 4

以上环境基本就配置完成。

补充说明：

所有命令都是-g进行全局安装的，这样安装的安装包都在当前用户下，在磁盘的所有其他地方都可以访问到，比较方便。否则安装在当前目录下，只能在当前目录下使用。

安装express问题 :

安装nodejs安装包后，通过npm安装express后，运行express提示" express"不是内部或外部命令，原因是版本问题，当前版本是4.0.0，改成3.5.0即可运行。

$ npm install -g express@3.5.0

全局安装在C:\Users\xdskg\AppData\Roaming\npm目录下。

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li {
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ul, ol {
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dl {
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dl dt {
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font-style: italic;
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margin: 15px 0 5px; }
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dl dt > :first-child {
margin-top: 0; }
dl dt > :last-child {
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dl dd {
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padding: 0 15px; }
dl dd > :first-child {
margin-top: 0; }
dl dd > :last-child {
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blockquote {
border-left: 4px solid #dddddd;
padding: 0 15px;
color: #777777; }
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blockquote > :last-child {
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table tr td {
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-->