I've built a small script to let chosen objects fade in when the user scrolls down. My problem is that this script is pretty static. If I applied this on 20 different objects, say, I would have to set the height every time. Here is an example:
$(document).ready(function () {
$(window).scroll(function () {
if ($(this).scrollTop() > 500) {
$(".header-js-scroll-fade").css({"opacity" : "1"});
$(".home-vorteile").addClass("header-img-fade-in-by-scroll");
}
else {
$(".header-js-scroll-fade").css({"opacity" : "0"});
$(".home-vorteile").removeClass("header-img-fade-in-by-scroll");
}
});
});
.header-js-scroll-fade {
opacity: 0;
transition: 0.5s;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<h1 id="vorteile-text">Vertrauen durch,</h1>
<section class="home-vorteile">
<div class="header-js-scroll-fade header-img-fade-in-by-scroll">
<img src="https://via.placeholder.com/500" />
<h2>Sicherheit.</h2>
</div>
<div class="header-js-scroll-fade header-img-fade-in-by-scroll">
<img src="https://via.placeholder.com/500" />
<h2>Neueste KI Technik.</h2>
</div>
<div class="header-js-scroll-fade header-img-fade-in-by-scroll">
<img src="https://via.placeholder.com/500" />
<h2>Beste Materialien.</h2>
</div>
</section>