link_copy_html.js

(function () {
    const elem = document.createElement("a");
    elem.href = location.href;
    elem.innerText = document.title;
    document.body.appendChild(elem);
    try {
        const range = document.createRange();
        range.selectNodeContents(elem)
        const selection = window.getSelection();
        selection.removeAllRanges();
        selection.addRange(range);
        document.execCommand("copy");
    } finally {
        document.body.removeChild(elem);
    }
})();

link_copy_html.min.js

!function(){const elem=document.createElement("a");elem.href=location.href,elem.innerText=document.title,document.body.appendChild(elem);try{const range=document.createRange();range.selectNodeContents(elem);const selection=window.getSelection();selection.removeAllRanges(),selection.addRange(range),document.execCommand("copy")}finally{document.body.removeChild(div)}}();