Custom Event Link Label For Image Links

mi-set-data-vars-ga-label-for-images.php

<?php

/**
 * Add to Child Theme's functions.php.
 */
add_action( 'wp_footer', function () { 
  if (is_page ('2')) { 
?>
  <script>// Custom Label Snippet
  let dl948914 = document.querySelector("a");
  let img948914 = document.querySelector("img");
  if ( (dl948914) && (img948914) ) {
    console.log('Found a link and image.');
    let imgTitle = img948914.getAttribute('title');
    if ( imgTitle) {
      dl948914.setAttribute("data-vars-ga-label", document.title + ': ' + imgTitle);
    }
  }
  </script>
<?php
  }
} );

Live demo on CodePen: https://codepen.io/marklchaves/pen/wvGxjQm