<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>点击复制功能</title>
</head>
<script src="http://code.jquery.com/jquery-2.0.2.min.js"></script>
    <style>
        .popup__bottom__text{
            margin-bottom: 10px;
        }
    </style>
<body>
    <div class="popup__bottom__text">
        <a  id="text_1" style="font-size:12px; color:#0066cc;" href="/ueditor/php/upload/file/20181016/1539677909627575.png" title="1539677909627575.png">bbbb.png</a>
        <a href="javascript:(0)" onclick="tapCopy('text_1')">点我复制</a>
    </div>
    <div class="popup__bottom__text">
        <a  id="text_2" style="font-size:12px; color:#0066cc;" href="/ueditor/php/upload/file/20181016/1539677909627575.png" title="1539677909627575.png">aaaa.png</a>
        <a href="javascript:(0)" onclick="tapCopy('text_2')">点我复制</a>
    </div>
    
</body>
</html>
<script>
    //复制文本
    function tapCopy($id) {
     //var $id = $(dom).prev().attr('data_id');
        selectText($id);
        document.execCommand('copy');
        alert('复制成功');
    }
    //选中文本
    function selectText(element) {
        var text = document.getElementById(element);
        //做下兼容
        if (document.body.createTextRange) {  //如果支持
            var range = document.body.createTextRange(); //获取range
            range.moveToElementText(text); //光标移上去
            range.select();  //选择
        } else if (window.getSelection) {
            var selection = window.getSelection(); //获取selection
            var range = document.createRange(); //创建range
            range.selectNodeContents(text);  //选择节点内容
            selection.removeAllRanges(); //移除所有range
            selection.addRange(range);  //添加range
            /*if(selection.setBaseAndExtent){
             selection.setBaseAndExtent(text, 0, text, 1);
             }*/
        } else {
            alert("复制失败");
        }
    }
</script>