<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>   

    <script src="https://cdn.jsdelivr.net/clipboard.js/1.5.12/clipboard.min.js"></script>  

        微信号：<span id="target">xyz2018</span>

        <button class="btn" data-clipboard-action="copy" data-clipboard-target="#target" id="copy_btn">    

            点击复制    

        </button> 

        <script>    

                $(document).ready(function(){       

                    var clipboard = new Clipboard(‘#copy_btn‘);    

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

                        alert("微信号复制成功",1500); 

                        window.location.href=‘weixin://‘;

                        e.clearSelection();    

                        console.log(e.clearSelection);    

                    });    

                });    

            </script>