The document discusses Node.js, an event-driven JavaScript runtime for building scalable network applications. It covers the benefits of Node.js like small core size, multi-platform support, and NPM module system. It also provides instructions on installing Node.js and describes popular Node.js frameworks like Express, Jade and Stylus. The document recommends some online resources for learning more about Node.js, Express and these templating languages.
3. about me
15 years programming experience
Software Developer and MSSQL DBA @ Com-
UT/Sedimap
using Node.js about 3 years
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5. Node -About
Node.js is a platform to build fast and scalable
network applications
we know this can be very painful and hard in some languages
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6. Node -About
It is built on GoogleV8 JavaScript engine, the libuv
platform abstraction layer and a core library, which is
itself primarily written in JavaScript.
perhaps the best and faster JavaScript engine...
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7. Node -About
event-driven
deļ¬ned as an application technique in which the
application has a main loop
non-blocking I/O
is a form of I/O processing that permits other processing to
continue before the last transmission has ļ¬nished
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9. Node - Benefits
Small Core
Multi-Platform
implements some CommonJS speciļ¬cations
Easy to use, easy to start
JavaScript on server, JavaScript on client
Single thread simpliļ¬es concurrency
Package Module (NPM)
Community
Great Modules (like underscore, async, express, request, etc...)
Rapidly changing, e.g., updating in shortly time
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10. Installing Node
Go to http://nodejs.org/
Windons and Mac OS X click on āinstallā
Linux, using package manager
Gentoo, Ubuntu, Fedora, etc...
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11. Installing Node(Cont.)
Install from source code
wget http://nodejs.org/dist/v0.10.x/node-v0.10.x.tar.gz
tar xzf node-v0.10x.tar.gz
./conļ¬gure
make
make test
make install
node --version
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12. NPM
How to ļ¬nd a module
npm search express
https://npmjs.org/
Some attentions you need to take before install a module
were updated relatively recently
have github repositories linked
have READMEs with good documentation
have at least some number of people instaling them every
week
are liberally licensed (feel free to use)
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13. Installing a module
Global Mode
will install in /usr/local/lib/node_modules
is more suited for modules that should always be available
Local Mode
NPM default mode
āyour application pathā/node_modules
is ideal for installing the modules your applications depends
donāt affect others applications that you have installed
use always this mode is more safe
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16. About
is a minimal and ļ¬exible web application
framework
provide a robust set of features for building
single, multi-page and hybrid web applications
is based on the Connect middleware
and implements MVC
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17. Installing & Generate an
app
sudo npm install -g express
express --sessions --css stylus myapp
cd myapp & npm install
node app
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18. Express - app
package.json (some app
settings)
app.js (launch app)
public/*
routes/*
views/*
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19. Jade
is a high performance template engine
implemented with JavaScript for node
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21. Stylus
robust, feature-rich CSS language built
for node
providing an efļ¬cient, dynamic and
expressive way to generate CSS
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