https://cdn.bootcss.com/clipboard.js/2.0.4/clipboard.min.js `npm install clipboard --save` ~~~ <input id="foo" value="被复制内容"> <button class="btn" data-clipboard-target="#foo"> 复制 </button> <button class="btn" data-clipboard-text="内容"> 复制 </button> var clipboard = new clipboard('.btn'); clipboard.on('success', function(e) { alert("复制成功") }); ~~~