Make these slides loop?

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I made this set of div slides with left and right navigation arrows. Each div slide is set to a min-width of 80px.

The code works just fine, except, when I navigate either to the right or to the left, the slider stops at the last item.

I want this slider to loop, instead of ending at the last item.

What I have tried:

Here's the full HTML:

HTML

<!DOCTYPE HTML>
<html>

<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" />
    <style>
        body{
            background-color: #555;
            height: 100vh;
            display: grid;
            align-items: center;
            justify-items: center;
            font-family: 'Helvetica';
        }
        
        div#slide_wrapper{
            width: 440px;
            display: flex;
            justify-content: space-between;
            height: fit-content;
        }
        
        div#slider{
            width: 350px;
            display: flex;
            height: fit-content;
            flex-wrap: nowrap;
            overflow: hidden;
        }
        
        div.thumbnail{
            min-width: 80px;
            min-height: 80px;
            cursor: pointer;
            display: grid;
            place-items: center;
            font-size: 30px;
        }

        div.thumbnail:not(:last-child){
            margin-right: 10px;
        }

        div.thumbnail:nth-child(1){
            background-color: darkturquoise;
        }
        div.thumbnail:nth-child(2){
            background-color: goldenrod;
        }
        div.thumbnail:nth-child(3){
            background-color: rebeccapurple;
        }
        div.thumbnail:nth-child(4){
            background-color: powderblue;
        }
        div.thumbnail:nth-child(5){
            background-color: firebrick;
        }
        div.thumbnail:nth-child(6){
            background-color: sienna;
        }
        div.thumbnail:nth-child(7){
            background-color: bisque;
        }
        div.thumbnail:nth-child(8){
            background-color: navy;
        }
        
        div#slide_wrapper > button{
            height: fit-content;
            align-self: center;
            font-size: 24px;
            font-weight: 800;
            border: none;
            outline: none;
        }
        
        div#slide_wrapper > button:hover{
            cursor: pointer;
            background-color: dodgerblue;
            color: #fff;
        }
    </style>
    <title>Product Image Slider</title>
</head>

<body>
    <div id="slide_wrapper">
        <button id="slide_left" class="slide_arrow">❮</button>
        <div id="slider">
            <div class="thumbnail active">1</div>
            <div class="thumbnail">2</div>
            <div class="thumbnail">3</div>
            <div class="thumbnail">4</div>
            <div class="thumbnail">5</div>
            <div class="thumbnail">6</div>
            <div class="thumbnail">7</div>
            <div class="thumbnail">8</div>
        </div>
        <button id="slide_right" class="slide_arrow">❯</button>
    </div>
</body>

</html>

<script>

    let buttonLeft = document.getElementById('slide_left')
    let buttonRight = document.getElementById('slide_right')

    buttonLeft.addEventListener('click', function() {
        document.getElementById('slider').scrollLeft -= 90
    })

    buttonRight.addEventListener('click', function() {
        document.getElementById('slider').scrollLeft += 90
    })
</script>

Posted 12-Jun-22 7:00am

Skyroxen

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Comments

Richard MacCutchan 13-Jun-22 3:48am

You need to add a check in your event handlers to see if the left or right move will go outside the limits of the window. Create variables to hold the current position of the slider and whenever it exceeds its limit, reset it to the initial position.

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