<body>
<!-- 1. Define some markup -->
<div id="btn" data-clipboard-text="1">
<span>Copy</span>
</div>
<!-- 2. Include library -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/1.7.1/clipboard.min.js"></script>
<!-- 3. Instantiate clipboard by passing a HTML element -->
<script>
var btn = document.getElementById('btn');
var clipboard = new Clipboard(btn);
clipboard.on('success', function(e) {
console.log(e);
});
clipboard.on('error', function(e) {
console.log(e);
});
</script>
</body>