clipboard.js

/**
 * Copy
 * Don't use for input tags
 * 
 * e.g.
 * <span id="copy-target">Copied text</span>
 * <button class="copy-button" data-target="#copy-target">Copy</button>
 */
$('.copy-button').on('click', function (e) {
    e.preventDefault();

    const target = $($(this).data('target'));
    if (! target || ! target.length) {
        return
    }

    var range = document.createRange();
    var targetNode = target.get(0)
    range.selectNode(targetNode.firstChild);
    window.getSelection().addRange(range);
    document.execCommand('copy');
    window.alert('Copied');
});