exercises/html/85.html at main · Crane-xu/exercises · GitHub

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

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>hover滚动</title>
    <style>
        .card {
            white-space: nowrap;
            overflow-x: scroll;
            line-height: 200px;
            background-color: blueviolet;
        }
    </style>
</head>

<body>
    <p class="card">
        云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。云想衣裳花想容，春风拂槛露华浓。
    </p>
</body>
<script>
    var timer = null;
    let p = document.querySelector(".card");
    p.addEventListener("mouseenter", function (e) {
        let that = this;
        const mouseX = e.offsetX;
        // scrollLeft：dom的已滚动宽度 、offsetWidth：dom的视区宽度 、scrollWidth：dom的可滚动宽度
        if (mouseX > (that.offsetWidth / 2)) {
            timer = setTimeout(function fn() {
                if ((that.scrollLeft + that.offsetWidth) == that.scrollWidth) {
                    clearTimeout(timer);
                } else {
                    timer = setTimeout(fn, 100);
                }
                that.scrollLeft += 10;
            }, 100);
        } else {
            timer = setTimeout(function fn() {
                if (!that.scrollLeft) {
                    clearTimeout(timer);
                } else {
                    timer = setTimeout(fn, 100);
                }
                that.scrollLeft -= 10;
            }, 100);
        }
    });
    p.addEventListener("mouseleave", function (e) {
        clearTimeout(timer);
    });
</script>
<script src="../js/front_next.js" type="text/javascript" charset="utf-8"></script>

</html>