Express.js

Transcript

2. What is Express.js? ™  A light-weight web application framework ™  To help organize a web application ™  MVC architecture on the server side
3. What is the purpose of it with Node.js? ™  No need to repeat same code over and over again ™  Node.js is a low-level I/O mechanism which has an HTTP module ™  If using just an HTTP module, a lot of work will have to be re-implemented ™  For example parsing the payload, cookies, storing sessions, etc... ™  Express.js provides necessary functionalities to use with HTTP module
4. How to install? ™  Require Node.js ™  Require express-generator package before you can generate an application ™  For global use:   ™  npm  install  –g  express-­‐generator  
5. How to use? ™  First generate an application then install all the dependencies that it needs: 1.  $  express  expresstest   2.  $  cd  expresstest   3.  $  npm  install   4.  $  DEBUG=expresstest  ./bin/www     1.  $  nodeman  bin/www  
6. Hogan.js, CSS and nodemon ™  $  express  –-­‐hogan  –c  less   ™  $  npm  install  –g  nodemon   ™  $  nodemon  bin/www