<script src="https://cdn.bootcss.com/clipboard.js/2.0.1/clipboard.js"></script>
html
<input type="text" id="#text" value="454544564"/><button class="btn" data-clipboard-target="#num">copy</button>
js
var clipboard = new ClipboardJS('.btn');
clipboard.on('success', function(e) {// 复制成功
e.clearSelection();
});
clipboard.on('error', function(e) {// 复制失败
console.error('Action:', e.action);
console.error('Trigger:', e.trigger);
});
