复制内容后弹出提示框教程

<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/layer/3.5.1/layer.js"></script>
<script type="text/javascript"> document.body.oncopy = function() {layer.msg('复制成功，若要转载请务必保留出处！', {icon: 1});};</script>