webScroll/6_1_scroll_trigger_animate_css.html at main · p4css/webScroll · GitHub

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

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css"
        integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.7.2/animate.min.css">

    <style>
        .slideanimate {
            visibility: hidden;
        }

        .slide {
            visibility: visible;
        }
    </style>

</head>

<body>
    <div style="height:500px;background-color:gray;"></div>

    <div class="container-fluid slideanimate" style="background-color:dodgerblue;height:1000px;">
        <div class="row">
            <div class="col-md-4"><img src="assets/snoopy1.jpg" class="img-thumbnail"></div>
            <div class="col-md-4"><img src="assets/snoopy2.jpg" class="img-thumbnail"></div>
            <div class="col-md-4"><img src="assets/snoopy3.jpg" class="img-thumbnail"></div>
        </div>
    </div>

    <div style="height:500px;background-color:gray;"></div>

    <div class="container-fluid" style="background-color:coral;height:1000px">
        <div class="row">
            <div class="col-md-4 slideanimate"><img src="assets/snoopy1.jpg" class="img-thumbnail"></div>
            <div class="col-md-4 slideanimate"><img src="assets/snoopy2.jpg" class="img-thumbnail"></div>
            <div class="col-md-4 slideanimate"><img src="assets/snoopy3.jpg" class="img-thumbnail"></div>
        </div>
    </div>
    <div style="height:500px;background-color:gray;"></div>

    <script src="https://code.jquery.com/jquery-3.4.1.min.js"
        integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js"
        integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous">
    </script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"
        integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous">
    </script>


    <script>
        $(function () {
            $(window).scroll(function () {
                var winh = $(window).height();
                $(".slideanimate").each(function () {
                    var scrolled = $(window).scrollTop();
                    var objpos = $(this).offset().top;
                    if (objpos < scrolled + winh * 0.8) {
                        $(this).addClass("animated bounce delay-2s slide");
                    }
                    if (scrolled == 0) {
                        $(this).removeClass("animated bounce delay-2s slide");
                    }
                });
            });
        });
    </script>

</body>

</html>