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Brussels | ITP-2026-1 | Nik | Week 9 | Sprint 3 - Slideshow #131

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Brussels | ITP-2026-1 | Nik | Week 9 | Sprint 3 - Slideshow #131

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57 changes: 51 additions & 6 deletions Sprint-3/slideshow/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -3,12 +3,57 @@
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Title here</title>
<script defer src="slideshow.js"></script>
<title>Image carousel</title>
<style>
body {
font-family: Arial, sans-serif;
text-align: center;
padding: 20px;
}

#carousel-img {
max-width: 600px;
width: 100%;
height: 400px;
object-fit: cover;
border: 2px solid #333;
margin-bottom: 20px;
}

button {
margin: 5px;
padding: 10px 20px;
font-size: 16px;
cursor: pointer;
}

button:disabled {
opacity: 0.5;
cursor: not-allowed;
}

.controls {
margin-bottom: 10px;
}
</style>
</head>
<body>
<img id="carousel-img" src="./assets/cute-cat-a.png" alt="cat-pic" />
<button type="button" id="backward-btn">Backwards</button>
<button type="button" id="forward-btn">Forward</button>
<body>
<h1>Image Carousel</h1>

<img id="carousel-img" src="" alt="Carousel image" />

<div class="controls">
<button type="button" id="backward-btn">◀ Backward</button>
<button type="button" id="forward-btn">Forward ▶</button>
</div>

<div class="controls">
<button type="button" id="auto-backward">⏪ Auto Backward</button>
<button type="button" id="stop">⏹ Stop</button>
<button type="button" id="auto-forward">Auto Forward ⏩</button>
</div>

<script src="slideshow.js"></script>
</body>
</html>

86 changes: 85 additions & 1 deletion Sprint-3/slideshow/slideshow.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,5 +4,89 @@ const images = [
"./assets/cute-cat-c.jpg",
];

// Write your code here

// Write your code here
// 2. declare global variables
let currentIndex = 0; // current image index
let intervalId = null; // ID timer (for stop)

// 3. find DOM elements
const img = document.getElementById("carousel-img");
const forwardBtn = document.getElementById("forward-btn");
const backwardBtn = document.getElementById("backward-btn");
const autoForwardBtn = document.getElementById("auto-forward");
const autoBackwardBtn = document.getElementById("auto-backward");
const stopBtn = document.getElementById("stop");

// 4. function reloadImage
img.src = images[currentIndex];


// 5. function nextImage
function goForward() {
currentIndex++;

// cycle if get end -> back to start
if (currentIndex >= images.length) {
currentIndex = 0;
}
img.src = images[currentIndex];
}

// 6. function previous image
function goBackward() {

// cycle if get start -> go to end
currentIndex--;
if (currentIndex < 0) {
currentIndex = images.length - 1;
}
img.src = images[currentIndex];
}

function startAutoForward() {
// stop previous interval (if it was)
stopAuto();

// start new interval
intervalId = setInterval(goForward, 2000);

// disable auto buttons
autoForwardBtn.disabled = true;
autoBackwardBtn.disabled = true;
}

// 8. start auto backward
function startAutoBackward() {
// stop previous interval
stopAuto();

// start new interval
intervalId = setInterval(goBackward, 2000);

// disable auto buttons
autoForwardBtn.disabled = true;
autoBackwardBtn.disabled = true;
}

// 9. stop auto
function stopAuto() {
if (intervalId !== null) {
clearInterval(intervalId);
intervalId = null;
}

// enable auto buttons
autoForwardBtn.disabled = false;
autoBackwardBtn.disabled = false;
}

// 10. event listeners
forwardBtn.addEventListener("click", goForward);
backwardBtn.addEventListener("click", goBackward);
autoForwardBtn.addEventListener("click", startAutoForward);
autoBackwardBtn.addEventListener("click", startAutoBackward);
stopBtn.addEventListener("click", stopAuto);

// 11. show first image when load
img.src = images[currentIndex];