JavaScript

The bipolar language





Fun fact


This presentation was made with JavaScript
See reveal.js

Background

  • JavaScript doesn't exist (it's ECMAScript)
  • JavaScript has no logo
  • JavaScript's development was rushed
  • JavaScript is loved and hated greatly


Language overview

  • Dynamically typed
  • Interpreted*
  • Prototype OOP
  • Procedural/Functional
  • Evented
  • DOM

BAD/TRICKY PARTS

  • Scope (only Matlab is worse)
  • Browser dependence
  • Callbacks
  • Semicolon (return; {})
  • Objects 

GOOD PARTS

  • Lingua franca of the web/ubiquity
  • Performance (if it's slow, stop using IE)
  • Dynamic features
  • JSON

Node.js

  • Server-side JavaScript
  • Evented, non-blocking
  • Runs in your terminal!
  • NPM package manager
  • You can make an IRC bot


Socket.io

  • Great for real-time applications
  • A better alternative to timed AJAX requests
  • Relatively easy to use, you can make a chat program in 5 min
  • Cloud9

Express.js

  • Web framework
  • Lighter than Rails, but more flexible like Sinatra
  • Used in commercial web applications

Client-side

  • Most commonly used language for client-side scripting
  • Flash is dying, Dart is still in development
  • Probably better than OOP GUI
  • Currently JS is the way to do fancy web UIs

WebRTC

WebGL

Angular.js

  • There's also Ember.js, Backbone.js
  • Developed by Google
  • DOM templating
  • Declarative HTML
  • Single page apps
  • Demo

Summary







  • Learn JavaScript and you'll find something cool to do with it
  • JavaScript is difficult*





Questions

deck

By Maxim Kim

Made with Slides.com

deck

  • 2,301

More from Maxim Kim