54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
(function () {
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var galleries = document.getElementsByClassName('gallery');
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var process_gallery = function (g) {
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var images = g.querySelectorAll('.images img');
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var navs = []; // computed below
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var gallery_nav = g.querySelector('nav');
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var selected_index = 0;
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var select_image = function (index) {
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// var image = images[index];
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if (selected_index !== index) {
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images[selected_index].style.display = 'none';
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navs[selected_index].classList.remove('selected');
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images[index].style.display = 'block';
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navs[index].classList.add('selected');
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selected_index = index;
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}
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}
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var next_image = function () {
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if (selected_index >= images.length-1) {
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select_image(0);
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} else {
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select_image(selected_index+1);
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}
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}
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var nav_to_image = function () {
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select_image(Array.from(navs).indexOf(this));
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}
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var navHtml = '';
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for (var i=0; i<images.length; ++i) {
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var image = images[i]
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image.addEventListener('click', next_image)
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navHtml += '<i class="' + (i===0? 'selected' : '') + '" data-target="' + image.id + '"></i>'
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}
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gallery_nav.innerHTML = navHtml;
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navs = gallery_nav.querySelectorAll('i');
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for (var i=0; i<navs.length; ++i) {
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var nav = navs[i];
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nav.addEventListener('click', nav_to_image)
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}
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}
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for (var i=0; i<galleries.length; ++i) {
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var g = galleries[i];
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process_gallery(g);
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}
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})(); |