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ZA Cape Town | ITP-May-2025 | Dawud Vermeulen | Sprint 3 | Slideshow #747

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ZA Cape Town | ITP-May-2025 | Dawud Vermeulen | Sprint 3 | Slideshow #747

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26 changes: 20 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 +3,26 @@
<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>
</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>
<h1>Image Carousel</h1>
<p>Click the buttons to navigate through the images.</p>
<main class="carousel-container">
<div class="carousel">
<button id="backward-btn">Backward</button>
<img id="carousel-img" src="" alt="Image carousel" loading="lazy"/>
<button id="forward-btn">Forward</button>
</div>
<div class="controls">
<button id="auto-forward">Auto Forward</button>
<button id="auto-backward">Auto Backward</button>
<button id="stop">Stop Auto</button>
<label for="delayInput">Delay (seconds):</label>
<input type="number" id="delayInput" min="0.1" step="0.1" value="2" />
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Solid approach, but are we using this input anywhere?
How can we ensure that the delay takes the value passed here into consideration for auto-forward and backwards?

</div>
</main>

<script src="slideshow.js"></script>
</body>
</html>
</html>
68 changes: 64 additions & 4 deletions Sprint-3/slideshow/slideshow.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,68 @@
const carouselImg = 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");

const images = [
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Good use of local resources, but the requirements mention "a list of at least 4 images", and we only have 3 here.

Bonus points and completely optional: Can you find a way to replace static local images with linked ones from a site like upsplash?

"./assets/cute-cat-a.png",
"./assets/cute-cat-b.jpg",
"./assets/cute-cat-c.jpg",
"./assets/cute-cat-a.png",
"./assets/cute-cat-b.jpg",
"./assets/cute-cat-c.jpg",
];

let currentIndex = 0;

let autoPlayIntervalId;
const intervalTime = 2000;

function updateImage() {
carouselImg.src = images[currentIndex];
}

function setAutoPlayButtonState(disabled) {
autoForwardBtn.disabled = disabled;
autoBackwardBtn.disabled = disabled;
forwardBtn.disabled = disabled;
backwardBtn.disabled = disabled;
}

function startAutoForward() {
stopAutoPlay();
setAutoPlayButtonState(true);
autoPlayIntervalId = setInterval(() => {
currentIndex = (currentIndex + 1) % images.length;
updateImage();
}, intervalTime);
}

function startAutoBackward() {
stopAutoPlay();
setAutoPlayButtonState(true);
autoPlayIntervalId = setInterval(() => {
currentIndex = (currentIndex - 1 + images.length) % images.length;
updateImage();
}, intervalTime);
}

function stopAutoPlay() {
clearInterval(autoPlayIntervalId);
setAutoPlayButtonState(false);
}

forwardBtn.addEventListener("click", () => {
currentIndex = (currentIndex + 1) % images.length;
updateImage();
});

backwardBtn.addEventListener("click", () => {
currentIndex = (currentIndex - 1 + images.length) % images.length;
updateImage();
});

autoForwardBtn.addEventListener("click", startAutoForward);
autoBackwardBtn.addEventListener("click", startAutoBackward);
stopBtn.addEventListener("click", stopAutoPlay);

// Write your code here
updateImage();