Можно на чистом js
<script type="text/javascript" >
function Copy(containerid) {
let textarea = document.createElement('textarea');
textarea.id = 'temp';
textarea.style.height = 0;
document.body.appendChild(textarea);
textarea.value = document.getElementById(containerid).innerText;
let selector = document.querySelector('#temp');
selector.select();
document.execCommand('copy');
document.body.removeChild(textarea);
}
</script>
<button onclick="Copy('toCopy')" title="Copy">Copy</button>
<div id="toCopy">text to copy!</div>