https://steeringlaw.com/wp-content/themes/HumanRights/js/lazyload.js?ver=813d33ef7fee0902825268dee4df076f

1// Passive event listeners
2    jQuery.event.special.touchstart = {
3        setup: function( _, ns, handle ) {
4            this.addEventListener("touchstart", handle, { passive: !ns.includes("noPreventDefault") });
5        }
6    };
7    jQuery.event.special.touchmove = {
8        setup: function( _, ns, handle ) {
9            this.addEventListener("touchmove", handle, { passive: !ns.includes("noPreventDefault") });
10        }
11    };
12    
13( function() { 'use strict';
14  let images = document.querySelectorAll('img[data-src]');
15              
16  document.addEventListener('DOMContentLoaded', onReady);
17  function onReady() {
18    // Show above-the-fold images first
19    showImagesOnView();
20
21    // scroll listener
22    window.addEventListener( 'scroll', showImagesOnView, false );
23  }
24  
25  // Show the image if reached on viewport
26  function showImagesOnView( e ) {
27    
28    for( let i of images ) {
29      if( i.getAttribute('src') ) { continue; } // SKIP if already displayed
30      
31      // Compare the position of image and scroll
32      let bounding = i.getBoundingClientRect();
33      let isOnView = bounding.top >= 0 &&
34      bounding.left >= 0 &&
35      bounding.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
36      bounding.right <= (window.innerWidth || document.documentElement.clientWidth);
37      
38      if( isOnView ) {
39        i.setAttribute( 'src', i.dataset.src );
40        if( i.getAttribute('data-srcset') ) {
41          i.setAttribute( 'srcset', i.dataset.srcset );
42        }
43      }
44    }
45  }
46              
47})();