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feat: [S2T02] 3-click celebration: confetti, yellow background, win message #13

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feat: [S2T02] 3-click celebration: confetti, yellow background, win message #13

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01dccac
feat: [S2T01] add second button with sequence tracking
RaZe31-cs May 14, 2026
caee4cd
feat: [S2T02] add confetti, yellow background, and win message on 3 a…
RaZe31-cs May 14, 2026
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12 changes: 9 additions & 3 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,17 @@
<body class="state-green">
<main class="app" aria-live="polite">
<h1>Happy Button</h1>
<button id="happy-button" type="button" class="happy-button button-green">
Click me
</button>
<div class="button-row">
<button id="happy-button" type="button" class="happy-button button-green">
Click me
</button>
<button id="happy-button-2" type="button" class="happy-button button-red">
Click me too
</button>
</div>
<p id="click-status" class="status">Total clicks: 0</p>
<p id="celebration-status" class="status">Clicks until celebration: 5</p>
<p id="sequence-status" class="status">Sequence progress: 0 / 3</p>
<p id="celebration-message" class="celebration" hidden>
Congratulations! You clicked the button 5 times.
</p>
Expand Down
91 changes: 87 additions & 4 deletions script.js
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Original file line number Diff line number Diff line change
@@ -1,10 +1,14 @@
const TOTAL_KEY = "happyButtonTotalClicks";
const CYCLE_KEY = "happyButtonCelebrationClicks";
const CELEBRATION_INTERVAL = 5;
const SEQUENCE_TARGET = 3;
const SEQUENCE_LENGTH = SEQUENCE_TARGET * 2;

const button = document.getElementById("happy-button");
const button2 = document.getElementById("happy-button-2");
const clickStatus = document.getElementById("click-status");
const celebrationStatus = document.getElementById("celebration-status");
const sequenceStatus = document.getElementById("sequence-status");
const celebrationMessage = document.getElementById("celebration-message");

function readStoredCount(key) {
Expand All @@ -14,6 +18,12 @@ function readStoredCount(key) {

let totalClicks = readStoredCount(TOTAL_KEY);
let celebrationClicks = readStoredCount(CYCLE_KEY);
let sequenceStep = 0;
let sequenceCelebrationActive = false;

function alternationsForStep(step) {
return Math.floor(step / 2);
}

function renderState(showCelebration = false) {
const isGreenButton = totalClicks % 2 === 0;
Expand All @@ -27,13 +37,76 @@ function renderState(showCelebration = false) {
celebrationStatus.textContent = `Clicks until celebration: ${
CELEBRATION_INTERVAL - celebrationClicks
}`;
if (showCelebration) {
sequenceStatus.textContent = `Sequence progress: ${alternationsForStep(
sequenceStep,
)} / ${SEQUENCE_TARGET}`;

if (sequenceCelebrationActive) {
celebrationMessage.textContent = "Ты выйграл";
celebrationMessage.hidden = false;
} else if (showCelebration) {
celebrationMessage.textContent = `Congratulations! You clicked the button ${totalClicks} times.`;
celebrationMessage.hidden = false;
} else {
celebrationMessage.hidden = true;
}
}

function advanceSequence(clickedId) {
const expectedId = sequenceStep % 2 === 0 ? button.id : button2.id;
if (clickedId === expectedId) {
sequenceStep += 1;
} else if (clickedId === button.id) {
sequenceStep = 1;
} else {
sequenceStep = 0;
}

if (sequenceStep >= SEQUENCE_LENGTH) {
sequenceCelebrationActive = true;
sequenceStep = 0;
triggerSequenceCelebration();
document.body.dispatchEvent(new CustomEvent("sequence:complete"));
} else {
sequenceCelebrationActive = false;
document.body.classList.remove("state-celebrate");
}
}

const CONFETTI_COUNT = 80;
const CONFETTI_COLORS = ["#ef4444", "#22c55e", "#3b82f6", "#f59e0b", "#a855f7", "#ec4899"];
const CONFETTI_DURATION_MS = 2600;

function triggerSequenceCelebration() {
document.body.classList.add("state-celebrate");

const layer = document.createElement("div");
layer.className = "confetti-layer";
layer.setAttribute("aria-hidden", "true");

for (let i = 0; i < CONFETTI_COUNT; i += 1) {
const piece = document.createElement("span");
piece.className = "confetti-piece";
const color = CONFETTI_COLORS[i % CONFETTI_COLORS.length];
const left = Math.random() * 100;
const delay = Math.random() * 400;
const duration = 1800 + Math.random() * 800;
const rotate = Math.random() * 360;
piece.style.setProperty("--confetti-color", color);
piece.style.setProperty("--confetti-left", `${left}%`);
piece.style.setProperty("--confetti-delay", `${delay}ms`);
piece.style.setProperty("--confetti-duration", `${duration}ms`);
piece.style.setProperty("--confetti-rotate", `${rotate}deg`);
layer.appendChild(piece);
}
celebrationMessage.hidden = !showCelebration;

document.body.appendChild(layer);
window.setTimeout(() => {
layer.remove();
}, CONFETTI_DURATION_MS);
}

button.addEventListener("click", () => {
function handlePrimaryClick() {
totalClicks += 1;
celebrationClicks += 1;

Expand All @@ -42,9 +115,19 @@ button.addEventListener("click", () => {
celebrationClicks = 0;
}

advanceSequence(button.id);

window.localStorage.setItem(TOTAL_KEY, String(totalClicks));
window.localStorage.setItem(CYCLE_KEY, String(celebrationClicks));
renderState(shouldCelebrate);
});
}

function handleSecondaryClick() {
advanceSequence(button2.id);
renderState(false);
}

button.addEventListener("click", handlePrimaryClick);
button2.addEventListener("click", handleSecondaryClick);

renderState(false);
45 changes: 43 additions & 2 deletions style.css
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Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,8 @@ body {
place-items: center;
color: #111827;
transition:
background-color 180ms ease,
color 180ms ease;
background-color 600ms ease,
color 600ms ease;
}

body.state-green {
Expand All @@ -28,6 +28,11 @@ body.state-red {
background: #16a34a;
}

body.state-celebrate {
background: #facc15;
color: #111827;
}

.app {
width: min(92vw, 28rem);
padding: 2rem;
Expand Down Expand Up @@ -101,8 +106,44 @@ h1 {
}
}

.confetti-layer {
position: fixed;
inset: 0;
pointer-events: none;
overflow: hidden;
z-index: 9999;
}

.confetti-piece {
position: absolute;
top: -10vh;
left: var(--confetti-left, 50%);
width: 0.6rem;
height: 1rem;
background: var(--confetti-color, #fbbf24);
transform: rotate(var(--confetti-rotate, 0deg));
opacity: 0.95;
animation: confetti-fall var(--confetti-duration, 2000ms) cubic-bezier(0.3, 0.7, 0.4, 1) var(--confetti-delay, 0ms) forwards;
}

@keyframes confetti-fall {
0% {
transform: translate3d(0, -10vh, 0) rotate(var(--confetti-rotate, 0deg));
opacity: 1;
}
100% {
transform: translate3d(0, 110vh, 0) rotate(calc(var(--confetti-rotate, 0deg) + 720deg));
opacity: 0.85;
}
}

@media (prefers-reduced-motion: reduce) {
.celebration {
animation: none;
}
.confetti-piece {
animation-duration: 0ms;
animation-delay: 0ms;
display: none;
}
}