03-JS.md

JavaScript Basics

• Basics of the language

  • Variables
  • Conditionals
  • Iteration
  • Operators
  • Equality / Comparison
  • Function Basics
    • Arguments / Parameters
    • return

• Ternary / Short Circuit

function buttonText(isLoggedIn) {
  if (isLoggedIn) {
    return 'Logout';
  } else {
    return 'Login';
  }
}


function buttonText(isLoggedIn) {
  return isLoggedIn ? 'Logout' : 'Login';
}

function demo() {
  const result1 = true && 'Yep';
  console.log(result1); // Yep
  const result2 = false && 'Nope';
  console.log(result2); // false
}

• Scope
  • Types of Scope
    • Global Scope
    • Function Scope
    • Block Scope
    • Module Scope
  • Hoisting
• More Advanced Function Concepts
  • First Class Functions
    • Functions can be variables in JS
  • Higher Order Functions
    • A function that accepts a function as an argument
    • A function that returns a function
      • Closures