blog - How to Add Copy to Clipboard Buttons to Code Blocks in Hugo - check-clipboard

check-clipboard.js

if (navigator && navigator.clipboard) {
    addCopyButtons(navigator.clipboard);
} else {
    var script = document.createElement('script');
    script.src = 'https://cdnjs.cloudflare.com/ajax/libs/clipboard-polyfill/2.7.0/clipboard-polyfill.promise.js';
    script.integrity = 'sha256-waClS2re9NUbXRsryKoof+F9qc1gjjIhc2eT7ZbIv94=';
    script.crossOrigin = 'anonymous';
    script.onload = function() {
        addCopyButtons(clipboard);
    };

    document.body.appendChild(script);
}