Bootstrap Snippet Scroll-Triggered Animations (jQuery) using HTML CSS Javascript

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<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
  <div class="wrapper">
    
    <div class="block animatable bounceIn">bounceIn</div>
    <div class="block animatable bounceInLeft">bounceInLeft</div>
    <div class="block animatable bounceInRight">bounceInRight</div>
    
    <div class="block animatable fadeIn">fadeIn</div>
    <div class="block animatable fadeInDown">fadeInDown</div>
    <div class="block animatable fadeInUp">fadeInUp</div>
    
    <div class="block animatable moveUp">moveUp</div>
    
    <div class="block animatable fadeBgColor">fadeBgColor</div>
    
    
    
    
    <div class="block animatable bounceIn">bounceIn</div>
    <div class="block animatable bounceInLeft">bounceInLeft</div>
    <div class="block animatable bounceInRight">bounceInRight</div>
    
    <div class="block animatable fadeIn">fadeIn</div>
    <div class="block animatable fadeInDown">fadeInDown</div>
    <div class="block animatable fadeInUp">fadeInUp</div>
    
    <div class="block animatable moveUp">moveUp</div>
    
    <div class="block animatable fadeBgColor">fadeBgColor</div>
    
    
    
    
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.block {
  height: 5em;
  line-height: 5em;
  width: 10em;
  background: #464646;
  color: #fdfdfd;
  text-align: center;
  margin: 1em auto;
  text-shadow: 0 0 1px #333; /* so one can see fadeBgColor properly */
}
.animatable {
  
  /* initially hide animatable objects */
  visibility: hidden;
  
  /* initially pause animatable objects their animations */
  -webkit-animation-play-state: paused;   
  -moz-animation-play-state: paused;     
  -ms-animation-play-state: paused;
  -o-animation-play-state: paused;   
  animation-play-state: paused; 
}
/* show objects being animated */
.animated {
  visibility: visible;
  
  -webkit-animation-fill-mode: both;
  -moz-animation-fill-mode: both;
  -ms-animation-fill-mode: both;
  -o-animation-fill-mode: both;
  animation-fill-mode: both;
  
  -webkit-animation-duration: 1s;
  -moz-animation-duration: 1s;
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// Trigger CSS animations on scroll.
// Detailed explanation can be found at http://www.bram.us/2013/11/20/scroll-animations/
// Looking for a version that also reverses the animation when
// elements scroll below the fold again?
// --> Check https://codepen.io/bramus/pen/vKpjNP
jQuery(function($) {
  
  // Function which adds the 'animated' class to any '.animatable' in view
  var doAnimations = function() {
    
    // Calc current offset and get all animatables
    var offset = $(window).scrollTop() + $(window).height(),
        $animatables = $('.animatable');
    
    // Unbind scroll handler if we have no animatables
    if ($animatables.length == 0) {
      $(window).off('scroll', doAnimations);
    }
    
    // Check all animatables and animate them if necessary
        $animatables.each(function(i) {
       var $animatable = $(this);
            if (($animatable.offset().top + $animatable.height() - 20) < offset) {
        $animatable.removeClass('animatable').addClass('animated');
            }
    });
    };
  
  // Hook doAnimations on scroll, and trigger a scroll
    $(window).on('scroll', doAnimations);
  $(window).trigger('scroll');
});
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"Scroll-Triggered Animations (jQuery)"
Bootstrap 4.1.1 Snippet by naimansari

Related: See More

Questions / Comments:

"Scroll-Triggered Animations (jQuery)" Bootstrap 4.1.1 Snippet by naimansari

Related: See More

Questions / Comments:

"Scroll-Triggered Animations (jQuery)"
Bootstrap 4.1.1 Snippet by naimansari