<input type="text" name="copy_txt" id="copy_txt" value="6228 4600 8801 4620 974" readonly/>

<button id="copy" data-clipboard-action="copy" data-clipboard-target="#copy_txt">复制账号</button>

<script type="text/javascript" src="js/jquery-3.0.0.min.js"></script>

<script type="text/javascript" src="js/payway/clipboard.min.js"></script>

<script>

    var clipboard = new Clipboard('.btn');

    clipboard.on('success', function(e) {

        console.log(e);

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    clipboard.on('error', function(e) {

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</script>