1.引进 clipboard.min.js

2.目标元素

<span id="copy"  data-clipboard-text="123456" @click="CopyVal"></span>

3.js部分

CopyVal:function(){
    var that = this;
    var clipboard = new Clipboard("#path")
    clipboard.on('success', function (e) {
        e.clearSelection();
            alert("复制成功")
    });
    clipboard.on('error', function (e) {
        alert("失败")
    });
}