Things to know

JavaScript

• jQuery
  • Event delegation
  • AJAX
    • Introduction to AJAX
    • A Beginner’s Guide to AJAX With jQuery
    • How to Use jQuery’s “ajax” Function
• Scoping and Hoisting
  • Scoping and this
  • Understanding Scope in JavaScript
• Custom elements
• ES5
  • Array instance methods
    • Array iteration methods explained
    • Array reduce() method explanation
  • Object class methods
• ES201X
  • Classes
  • Destructuring
  • Rest, spread
  • Default arguments, parameters
  • Arrow functions
  • var, let, const
  • Template literals
  • Shorthand properties
• Browser apis
  • URL, URLSearchParams

WordPress

• Meta fields
• Hooks (actions and filters)
• Routing, template hierarchy