Javascript for Kids · Lesson

Keeping Score

Count correct.

Lesson 3 of 413 steps

Keeping Score is a free Javascript for Kids lesson on CoddyKit. This is lesson 3 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Javascript for Kids learning path, and your progress syncs across the web and the CoddyKit app. The Javascript for Kids course includes 4 lessons in total.

Keep the Score! 🏆

Every great quiz counts how many you got right! Let's learn to keep score. 🏆

console.log('Let us count points! 🏆')

Start at Zero 0️⃣

Before the quiz starts, the score is 0. Everyone begins with no points! 0️⃣

let score = 0
console.log('Score:', score)

Add One Point ➕

When the answer is right, we add 1 to the score with score = score + 1. ➕

let score = 0
score = score + 1
console.log('Score:', score)

A Shortcut ⚡

score++ means the same as score = score + 1, but shorter! ⚡

let score = 0
score++
score++
console.log('Score:', score)

Score When Correct ✅

We only add a point when the guess is right. Let's combine score with if! ✅

let score = 0
let guess = 5
if (guess === 5) {
  score++
}
console.log('Score:', score)

Many Questions 📋

Let's answer three questions and watch the score grow! 📋

let score = 0
if (4 === 4) score++
if (7 === 8) score++
if (9 === 9) score++
console.log('Score:', score)

Show Progress 📊

It's nice to show the score after each question so players feel excited! 📊

let score = 0
if (2 === 2) score++
console.log('After Q1, score is', score)
if (3 === 5) score++
console.log('After Q2, score is', score)

Count Wrong Ones Too ❌

We can also count how many were WRONG with a second variable! ❌

let right = 0
let wrong = 0
if (6 === 6) right++; else wrong++
if (4 === 9) right++; else wrong++
console.log('Right:', right, 'Wrong:', wrong)

Score in a Function 🛠️

Let's make a helper that checks an answer AND adds to the score! 🛠️

let score = 0
function grade(guess, answer) {
  if (guess === answer) {
    score++
    console.log('Correct! 🎉')
  }
}
grade(5, 5)
grade(2, 3)
console.log('Score:', score)

How Many Out Of? 🔢

We can show score like 2 out of 3 by remembering the total number of questions. 🔢

let score = 2
let total = 3
console.log('You got', score, 'out of', total)

Full Score Tracker 🎮

Here is a mini quiz that keeps score from start to finish! 🎮

let score = 0
let total = 3
if (1 + 1 === 2) score++
if (5 - 2 === 3) score++
if (2 * 2 === 5) score++
console.log('Final score:', score, 'out of', total)

Quick Check ✅

Quick brain test! 🧠

Score Master! 🌟

You can now keep score in any quiz! 🎉

  • Start the score at 0 0️⃣
  • Use score++ for a point ⚡
  • Show 'X out of Y' 🔢

Last step: showing the final score! 🏁

console.log('Score keeping: COMPLETE! 🌟')
Free to start

Learn JavaScript with an AI tutor — free

Write and run real code in your browser, get instant help from a 24/7 AI tutor, and pick up where you left off on the web or in the app.

Courses
35
Lessons
140

Frequently Asked Questions

Is the “Keeping Score” lesson free?

Yes — the full text of “Keeping Score” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Javascript for Kids course, upgrade to CoddyKit PRO. The Javascript for Kids course includes 4 lessons in total.

What will I learn in “Keeping Score”?

Count correct. You practise Javascript for Kids with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.

Do I need any experience to start Javascript for Kids?

No prior experience is required. Javascript for Kids on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 3 of 4.

How long does the “Keeping Score” lesson take?

Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.

Can I write and run code in this Javascript for Kids lesson?

Yes. Every Javascript for Kids lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.

All lessons in this course

  1. Making Questions
  2. Checking Answers
  3. Keeping Score
  4. Final Score
← Back to Javascript for Kids