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Intro to JavaScript

What is JavaScript?

  • A programming language for the webpages and the internet
  • Designed by Brandon Eich for the Netscape browser in 10 days
  • Name influenced by Java
  • Dynamic, Asynchronous, Event Driven

What is this JQuery thing?

  • Used to make things less terrible when writing JS for different browsers
  • Kind of a crutch
  • Avoid it if you can
  • (vanilla.js)

How is it as a programming language?

terrible

The JavaScript ecosystem in less than a minute

  • If you run it on a server its called Node or Node.js
  • Package managers: npm, yarn

Different dialoges

  • ES5
    • runs everywhere always, is terrible
  • ES6 aka ECMA2015 aka ES2015
    • runs most places sometimes, is less terrible
  • ES7 aka ECMA2016
    • barely runs anywhere at this point

Transpiling

  • Taking dialogue and turning it into another
  • Babel is the most common tool for that Ex: ES7 -> ES6

Other languages that transpile to JavaScript

  • TypeScript
  • CoffeeScript
  • Elm
  • Scala.js
  • Gopher.js
  • many more

JavaScript "quirks"

blatantly stolen from Wat also checkout WTFJS

Asynchronous

Lets code!