JavaScript

Notes

JavaScript is a single-threaded, non-blocking language

• Started learning in 12.14.24, but need to review

• Resources
  • Google’s web.dev tutorial page
  • MDN
• Using JS with HTML & CSS
• DOM (Document Object Model)
  • Example of using onclick & EventListener

Basics

• Data types in JavaScript
  • Truthy and Falsy values
  • Numeric separators & Bigint
• Basic syntax
  • variables, operators, Array, loop, objects
  • Strings
  • Math.random
• JS Objects
  • JS constructors & Examples
• vs =
• Data Extraction and Manipulation
• JS Syntax Hacks
  • ternaries, short circuiting, and optional chaining
• Different ways of writing functions
  • Callback Functions
  • Function Hoisting
  • Closure
  • Default Parameters
  • Rest Parameter
• Array Methods
• Working with Immutable arrays
• Import and export

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• LocalStorage

Asynchronous JS

• Intro to Asynchronous JavaScript

• setTimeout and setInterval

  • setTimeout, setInterval, event loop

• Promises

  • Promises with HTTP methods

• Node.js

Under the hood

• How JS works under the hood