Basic Vanilla JS Carousel

Basic Vanilla JS Carousel developed using css, html and vanillaJS

Author	Andrew Zamora
Hits
Created	SEPTEMBER 17, 2018
License	Open
Compatible browsers	Chrome, Firefox, Safari

HTML Snippet

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
    <link rel="stylesheet" href="style.css">
    <title>Vanilla JS Carousel</title>
</head>

<body>
    <main>
        <h1>Basic Vanilla JS Carousel</h1>
        <div class="container">
            <button id="left-btn"><i class="arrow"></i></button>
            <img id="carousel" src="" alt="">
            <button id="right-btn"><i class="arrow"></i></button>
        </div>
    </main>

    <script src="main.js"></script>
</body>

</html>

CSS Code

* {
    padding: 0;
    margin: 0;
}

body {
    font-family: "Roboto", sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

h1 {
    text-align: center;
}

.container {
    width: 500px;
    height: 500px;
    display: flex;
    justify-content: center;
    /*  box-shadow is from materialize css's website */
    box-shadow: 0 24px 38px 3px rgba(0, 0, 0, 0.14),
        0 9px 46px 8px rgba(0, 0, 0, 0.12), 0 11px 15px -7px rgba(0, 0, 0, 0.2);
}

.container img {
    width: 100%;
    z-index: -2;
}

button {
    height: 10%;
    border: none;
    outline: none;
    background: rgba(0, 0, 0, 0.5);
    cursor: pointer;
    padding: 1em;
    display: flex;
}

button .arrow {
    border: solid #fff;
    border-width: 0 4px 4px 0;
    display: inline-block;
    padding: 7px;
    transition: transform 0.3s ease-out;
}

#right-btn {
    margin: auto 0 auto -2em;
}

#right-btn .arrow {
    transform: rotate(-45deg);
}

#left-btn {
    z-index: 0;
    margin: auto -2em auto 0;
}

#left-btn .arrow {
    transform: rotate(135deg);
}

JavaScript Snippet

const img = document.getElementById('carousel');
const rightBtn = document.getElementById('right-btn');
const leftBtn = document.getElementById('left-btn');

// Images are from unsplash
let pictures = ['https://images.unsplash.com/photo-1537000092872-06bbf7b64f60?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=14d2fe1244b43a1841569da918066fc4&auto=format&fit=crop&w=1050&q=80', 'https://images.unsplash.com/photo-1537005081207-04f90e3ba640?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=ffb71f2a2843e802e238c5ff8e4bbb8c&auto=format&fit=crop&w=764&q=80', 'https://images.unsplash.com/photo-1536873602512-8e88cc8398b1?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=60a351868d0839e686c8c5a286265f8d&auto=format&fit=crop&w=1050&q=80'];

img.src = pictures[0];
let position = 0;

moveRight = () => {
    if (position >= pictures.length - 1) {
        position = 0
        img.src = pictures[position];
        return;
    }
    img.src = pictures[position + 1];
    position++;
}

moveLeft = () => {
    if (position < 1) {
        position = pictures.length - 1;
        img.src = pictures[position];
        return;
    }
    img.src = pictures[position - 1];
    position--;
}

rightBtn.addEventListener("click", moveRight);
leftBtn.addEventListener("click", moveLeft);

Preview