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launchpad · lesson 02 · javascript40 min · beginner

JavaScript Foundations: Functions & Control Flow

reading progress · 22%

// from this lesson
function countdown(from) {
  for (let t = from; t > 0; t -= 1) {
    console.log(`T-${t}…`);
  }
}

quizQ1 — What does typeof 42 evaluate to?"number" — correct

Up next:JavaScript Foundations: Arrays & Objects

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worked examplelesson 02 · functions & control flow

function launchCountdown(seconds) {
  if (seconds < 1) {
    return "hold";
  }
  return `clear in ${seconds}s`;
}

output → launchCountdown(3) = "clear in 3s"

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JavaScript Foundations: Values, Variables & Types
JavaScript Foundations: Functions & Control Flow
JavaScript Foundations: Arrays & Objects
JavaScript Foundations: Iterating & Transforming
JavaScript Foundations: Scope & Closures
JavaScript Foundations: Error Handling & Debugging
JavaScript Foundations: Objects in Practice
JavaScript Foundations: JSON & Data Exchange
JavaScript Foundations: Capstone — The Word Analyzer

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