发布于 2017-02-02 00:48:47 | 120 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的Javascript教程,程序狗速度看过来!

JavaScript客户端脚本语言

Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言,主要目的是为了解决服务器端语言,比如Perl,遗留的速度问题,为客户提供更流畅的浏览效果。


这篇文章主要介绍了Ubuntu中搭建Nodejs开发环境过程,比较郁闷的是apt-get安装失败了,如果有遇到一样问题的朋友,可以参考一下本文

系统环境:

Ubuntu 12.04 LTS 64bit

一、 通过apt-get安装nodejs – 失败(可以下面的看源码安装方法):


~ sudo apt-get install nodejs
~ sudo apt-get install npm

~ node -v
v0.6.12

~ npm -v
1.1.4


创建工作目录

~ mkdir workspace
~ mkdir workspace/nodejs
~ cd workspace/nodejs
~ pwd
/home/conan/workspace/nodejs

安装失败

sudo npm install express -g
npm http GET https://registry.npmjs.org/express
npm http 304 https://registry.npmjs.org/express
npm http GET https://registry.npmjs.org/connect/2.7.11
npm http GET https://registry.npmjs.org/commander/0.6.1
npm http GET https://registry.npmjs.org/range-parser/0.0.4
npm http GET https://registry.npmjs.org/mkdirp/0.3.4
npm http GET https://registry.npmjs.org/cookie/0.1.0
npm http GET https://registry.npmjs.org/buffer-crc32/0.2.1
npm http GET https://registry.npmjs.org/fresh/0.1.0
npm http GET https://registry.npmjs.org/methods/0.0.1
npm http GET https://registry.npmjs.org/send/0.1.0
npm http GET https://registry.npmjs.org/cookie-signature/1.0.1
npm http GET https://registry.npmjs.org/debug
npm http 304 https://registry.npmjs.org/commander/0.6.1
npm http 304 https://registry.npmjs.org/connect/2.7.11
npm http 304 https://registry.npmjs.org/range-parser/0.0.4
npm http 304 https://registry.npmjs.org/mkdirp/0.3.4
npm http 304 https://registry.npmjs.org/cookie/0.1.0
npm http 304 https://registry.npmjs.org/buffer-crc32/0.2.1
npm http 304 https://registry.npmjs.org/fresh/0.1.0
npm http 304 https://registry.npmjs.org/methods/0.0.1
npm http 304 https://registry.npmjs.org/send/0.1.0
npm http 304 https://registry.npmjs.org/cookie-signature/1.0.1
npm http 304 https://registry.npmjs.org/debug
npm ERR! error installing express@3.2.6
npm ERR! error rolling back express@3.2.6 Error: UNKNOWN, unknown error '/usr/local/lib/node_modules/express'

npm ERR! Unsupported npm ERR! Not compatible with your version of node/npm: connect@2.7.11 npm ERR! Required: {"node":">= 0.8.0"} npm ERR! Actual: {"npm":"1.1.4","node":"0.6.12"} npm ERR! npm ERR! System Linux 3.5.0-23-generic npm ERR! command "node" "/usr/bin/npm" "install" "express" "-g" npm ERR! cwd /home/conan/workspace/nodejs npm ERR! node -v v0.6.12 npm ERR! npm -v 1.1.4 npm ERR! code ENOTSUP npm ERR! message Unsupported npm ERR! errno {} npm http GET https://registry.npmjs.org/mime/1.2.6 npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /home/conan/workspace/nodejs/npm-debug.log npm not ok


系统提示, node和npm版本不兼容。可能是终于apt-get源没有更新造成的问题。

二、从github下载源代码安装 – 成功

下面要找到兼容的版本,手动安装。
先卸载刚刚装的node和npm


~ sudo apt-get autoremove npm
~ sudo apt-get autoremove nodejs
找到nodejs的官方发布下载:https://github.com/joyent/node


在ubuntu中,先安装git

~ sudo apt-get install git

然后,从github下载nodejs源代码
~ git clone git://github.com/joyent/node.git
Cloning into 'node'...
remote: Counting objects: 100200, done.
remote: Compressing objects: 100% (28074/28074), done.
remote: Total 100200 (delta 78807), reused 90936 (delta 70473)
Receiving objects: 100% (100200/100200), 61.81 MiB | 698 KiB/s, done.
Resolving deltas: 100% (78807/78807), done.

进入node目录
~ cd node
~ pwd
/home/conan/workspace/nodejs/node

切换最新的release的版本v0.11.2-release
~ git checkout v0.11.2-release
Branch v0.11.2-release set up to track remote branch v0.11.2-release from origin.
Switched to a new branch 'v0.11.2-release'

进行安装
./configure
make
sudo make install

安装完成,查看node版本
~ node -v
-bash: /usr/bin/node: No such file or directory

提示错误,没有找到node,查一下node安装位置
~ whereis node
node: /usr/local/bin/node

增加软链接:node和npm到/usr/bin
~ sudo ln -s /usr/local/bin/node /usr/bin/node
~ sudo ln -s /usr/local/bin/npm /usr/bin/npm

我们再查看node和npm版本
~ node -v
v0.11.2
~ npm -v
1.2.21

下面安装express

~ sudo npm install express -g
express@3.2.6 /usr/local/lib/node_modules/express
├── methods@0.0.1
├── fresh@0.1.0
├── range-parser@0.0.4
├── cookie-signature@1.0.1
├── buffer-crc32@0.2.1
├── cookie@0.1.0
├── debug@0.7.2
├── commander@0.6.1
├── mkdirp@0.3.4
├── send@0.1.0 (mime@1.2.6)
└── connect@2.7.11 (pause@0.0.1, qs@0.6.5, bytes@0.2.0, cookie@0.0.5, formidable@1.0.14, send@0.1.1)

安装成功。

三、建立express工程,启动第一个项目


~ express -e nodejs-demo
create : nodejs-demo
create : nodejs-demo/package.json
create : nodejs-demo/app.js
create : nodejs-demo/public
create : nodejs-demo/public/javascripts
create : nodejs-demo/public/images
create : nodejs-demo/public/stylesheets
create : nodejs-demo/public/stylesheets/style.css
create : nodejs-demo/routes
create : nodejs-demo/routes/index.js
create : nodejs-demo/routes/user.js
create : nodejs-demo/views
create : nodejs-demo/views/index.ejs
install dependencies:
$ cd nodejs-demo && npm install
run the app:
$ node app

安装依赖包

~ cd nodejs-demo
~ sudo npm install
express@3.2.6 node_modules/express
├── methods@0.0.1
├── fresh@0.1.0
├── range-parser@0.0.4
├── cookie-signature@1.0.1
├── buffer-crc32@0.2.1
├── cookie@0.1.0
├── debug@0.7.2
├── commander@0.6.1
├── mkdirp@0.3.4
├── send@0.1.0 (mime@1.2.6)
└── connect@2.7.11 (pause@0.0.1, qs@0.6.5, bytes@0.2.0, cookie@0.0.5, formidable@1.0.14, send@0.1.1)

启动程序

~ node app.js
Express server listening on port 3000

测试是否启动成功curl


~ sudo apt-get install curl
~ curl localhost:3000

<!DOCTYPE html>
<html>
<head>
<title>Express</title>
<link rel='stylesheet' href='/stylesheets/style.css' />
</head>
<body>
<h1>Express</h1>
<p>Welcome to Express</p>
</body>
</html>

nodejs的服务器日志:

GET / 200 6ms - 206b

好了,我们已经成功的在ubuntu中,准备好了nodejs的开发环境。下面就可以享受开发的乐趣了。



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