DEV Community

Syntax - Tasty Web Development Treats

The Fundamentals — JS

In this episode of Syntax, Scott and Wes talk about the fundamentals of JavaScript - the set of core skills you should know before branching off into other frameworks, libraries, etc.

LogRocket - Sponsor

LogRocket lets you replay what users do on your site, helping you reproduce bugs and fix issues faster. It’s an exception tracker, a session re-player and a performance monitor. Get 14 days free at LogRocket.

FreshBooks - Sponsor

Get a 30 day free trial of FreshBooks at FreshBooks and put SYNTAX in the “How did you hear about us?” section.

Show Notes

3:07 - Variables + Scoping

  • var/let/const
  • Block scope
  • Function scope
  • Scope lookup

6:06 - Types

  • Objects
    • Reference vs. copy

7:15 - Functions

  • Types of functions
    • Anonymous vs. named
    • Expressions
    • Arrow functions
  • Methods

9:33 - DOM

  • Selecting
  • Updating
  • Creating

15:07 - Prototypes + this

  • this
  • Objects

20:16 - Events

  • Listening, callbacks
  • dispatchEvent
  • Bubbling

22:05 - Arrays

  • Push, pop, manipulate
  • Spread, rest
  • Map, filter, reduce
  • Arrays vs. objects
  • Mutation vs. immutable

26:25 - Flow control

  • Looping
  • If
  • Promises + Async + Await

29:47 - Security and accessibility

  • XSS and innerHTML

32:04 - Things you should know, but not necessarily master

  • Modules
  • Closures
  • Ajax requests

35:26 - Clean code

Links ××× SIIIIICK ××× PIIIICKS ××× Shameless Plugs Tweet us your tasty treats!

Episode source