Data-* attributes
URL: https://unsplash.com/photos/IJ25m7fXqtk
const img = $('#img1');
// fill the figcaption with the data-* attributes
$('figcaption').html(`
<b>Photographer</b>: ${img.data('photographer')}<br>
<b>URL</b>: <a href="${img.data('unsplash-url')}" target="_blank">${img.data('unsplash-url')}</a>
`);
// add a new data-* attribute for later use...
img.attr('data-new-attribute', 'New attribute');