"arrow key navigation thumbnail gallery modal view "
Bootstrap 4.1.1 Snippet by mail2sundarg

<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="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css" integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp" crossorigin="anonymous"> <div class="container"> <div class="row"> <div class="row"> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="" data-image="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="" data-image="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="" data-image="https://images.pexels.com/photos/305070/pexels-photo-305070.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/305070/pexels-photo-305070.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Test1" data-image="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Im so nice" data-image="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Im so nice" data-image="https://images.pexels.com/photos/305070/pexels-photo-305070.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/305070/pexels-photo-305070.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Im so nice" data-image="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Im so nice" data-image="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Im so nice" data-image="https://images.pexels.com/photos/305070/pexels-photo-305070.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/305070/pexels-photo-305070.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Im so nice" data-image="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/853168/pexels-photo-853168.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> <div class="col-lg-3 col-md-4 col-xs-6 thumb"> <a class="thumbnail" href="#" data-image-id="" data-toggle="modal" data-title="Im so nice" data-image="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" data-target="#image-gallery"> <img class="img-thumbnail" src="https://images.pexels.com/photos/158971/pexels-photo-158971.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260" alt="Another alt text"> </a> </div> </div> <div class="modal fade" id="image-gallery" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <div class="modal-dialog modal-lg"> <div class="modal-content"> <div class="modal-header"> <h4 class="modal-title" id="image-gallery-title"></h4> <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span> </button> </div> <div class="modal-body"> <img id="image-gallery-image" class="img-responsive col-md-12" src=""> </div> <div class="modal-footer"> <button type="button" class="btn btn-secondary float-left" id="show-previous-image"><i class="fa fa-arrow-left"></i> </button> <button type="button" id="show-next-image" class="btn btn-secondary float-right"><i class="fa fa-arrow-right"></i> </button> </div> </div> </div> </div> </div> </div>
.btn:focus, .btn:active, button:focus, button:active { outline: none !important; box-shadow: none !important; } #image-gallery .modal-footer{ display: block; } .thumb{ margin-top: 15px; margin-bottom: 15px; }
let modalId = $('#image-gallery'); $(document) .ready(function () { loadGallery(true, 'a.thumbnail'); //This function disables buttons when needed function disableButtons(counter_max, counter_current) { $('#show-previous-image, #show-next-image') .show(); if (counter_max === counter_current) { $('#show-next-image') .hide(); } else if (counter_current === 1) { $('#show-previous-image') .hide(); } } /** * * @param setIDs Sets IDs when DOM is loaded. If using a PHP counter, set to false. * @param setClickAttr Sets the attribute for the click handler. */ function loadGallery(setIDs, setClickAttr) { let current_image, selector, counter = 0; $('#show-next-image, #show-previous-image') .click(function () { if ($(this) .attr('id') === 'show-previous-image') { current_image--; } else { current_image++; } selector = $('[data-image-id="' + current_image + '"]'); updateGallery(selector); }); function updateGallery(selector) { let $sel = selector; current_image = $sel.data('image-id'); $('#image-gallery-title') .text($sel.data('title')); $('#image-gallery-image') .attr('src', $sel.data('image')); disableButtons(counter, $sel.data('image-id')); } if (setIDs == true) { $('[data-image-id]') .each(function () { counter++; $(this) .attr('data-image-id', counter); }); } $(setClickAttr) .on('click', function () { updateGallery($(this)); }); } }); // build key actions $(document) .keydown(function (e) { switch (e.which) { case 37: // left if ((modalId.data('bs.modal') || {})._isShown && $('#show-previous-image').is(":visible")) { $('#show-previous-image') .click(); } break; case 39: // right if ((modalId.data('bs.modal') || {})._isShown && $('#show-next-image').is(":visible")) { $('#show-next-image') .click(); } break; default: return; // exit this handler for other keys } e.preventDefault(); // prevent the default action (scroll / move caret) });

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