DOM之练习2 

<!DOCTYPE html>
<!--
需求
    1.点击“添加附件”按钮，出现一个添加附件的input
    2.点击“删除”按钮，删除一行附件
-->
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script>
        function addFile(){
            var father = document.getElementById("content");
            var filer = document.createElement("input");
            filer.type="file";
            var myspan = document.getElementById("myspan");
            var buttoner = document.createElement("input");
            buttoner.type="button";
            buttoner.value="删除";
            buttoner.onclick=function(){
                removeele(this);
            }
            father.insertBefore(filer,myspan);
            father.insertBefore(buttoner,myspan);
            var br = document.createElement("br");
            father.insertBefore(br,myspan);

        }
        function removeele(item){
            var father = document.getElementById("content");
            father.removeChild(item.previousSibling);
            father.removeChild(item.nextSibling);
            father.removeChild(item);

        }
    </script>
</head>
<body>

<input type="button" value="添加附件" onclick="addFile()"/>

<hr/>
<div id="content">
    <input type="file" /><input type="button" value="删除" onclick="removeele(this)"/><br/>
    <input type="file" /><input type="button" value="删除" onclick="removeele(this)"/><br/>
    <span id="myspan">...</span>
</div>
</body>
</html>

　　

posted @ 2019-05-07 20:16  无声凉薄  阅读(181)  评论(0)    收藏  举报