JSFiddle - React, Tailwind, and code Playground
HTML
<input style="display: none;" id="Empty" value="x">
<input value="Copy Me If you want to.">
<input id="clipclear" type="button" value="Clear The Clipboard">
JavaScript
function clearclip(){
empty=document.getElementById("Empty");
empty.style.display="block";
empty.select();
document.execCommand('copy');
empty.style.display="none";
}
document.getElementById("clipclear").addEventListener("click", clearclip, false)
<!-- clearclip(); -->