用js循环添加元素时出现无论点击哪个后面的删除按钮都只能删掉最后一排且只能删除一次

Question

 $(function(){
        alert("fdsafsd");
        var fileNames = $("#fileName").val();
        var filePaths = $("#filePath").val();
        var fileNameList = new Array();
        var filePathList = new Array();
        if(fileNames.length !=0 && fileNames.length != "" && filePaths.length !=0 && filePaths.length !=""){
            fileNameList = fileNames.split(", ");
            filePathList = filePaths.split(", ");
            alert(fileNameList[0]+fileNameList[1]+fileNameList[2]);
            alert(filePathList.length);
            for(i = 0; i < fileNameList.length; i++){
                $("#i").val(i+1);
                alert($("#i").val());
                var td = document.getElementById("more");
                var br = document.createElement("br");
                var a = document.createElement("a");
                var input = document.createElement("input");
                var input1 = document.createElement("input");
                var input2 = document.createElement("input");
                var button = document.createElement("input");
                var span=document.createElement("span");
                a.id= "downloadFile" + i;
                a.innerHTML = ">>附件下载";
                a.href = "${baseURL}/" + filePathList[i];
                a.download = fileNameList[i];
                input.id = "attachmentFile" + i;
                input.disabled = "disabled";
                input.style = "background: transparent; border: none;";
                input.value = fileNameList[i];
                input.type = "text";
                input1.value = fileNameList[i];
                input1.type = "text";
                input1.name = "vo.updownFileName";
                input1.id = "updownFileName" + i;
                input2.value = filePathList[i];
                input2.type = "text";
                input2.id = "updownFilePath" + i;
                input2.name= "vo.updownFilePath";
                button.type = "button";
                button.value = "删除";


                td.appendChild(br);
                td.appendChild(a);
                td.appendChild(input);
                td.appendChild(input1);
                td.appendChild(input2);
                td.appendChild(span);
                td.appendChild(button);

                button.onclick = function()
                {
                    alert("删除");
                    td.removeChild(br);
                    td.removeChild(a);
                    td.removeChild(input);
                    td.removeChild(input1);
                    td.removeChild(input2);
                    td.removeChild(span);
                    td.removeChild(button);

                }
            }
        }
    });

    ![图片说明](https://img-ask.csdn.net/upload/201604/18/1460972877_485212.png)
    请大神帮我看看到底是哪里的原因？

Answer 1

闭包没做好，导致删除的是最后的那行的控件，删除后你再执行删掉操作dom对象不存在就会报错了，改下结构，用div扩起容器，然后通过dom关系来删除div就行了

               input2.name = "vo.updownFilePath";
                button.type = "button";
                button.value = "删除";

                ////////////////////////////
                var div=document.createElement('div')////////////
                div.appendChild(br);
                div.appendChild(a);
                div.appendChild(input);
                div.appendChild(input1);
                div.appendChild(input2);
                div.appendChild(span);
                div.appendChild(button);
                td.appendChild(div)////////////
                ////////////////////////////

                button.onclick = function () {
                    alert("删除");
                    td.removeChild(this.parentNode);//this为当前button，parentNode就是button的div容器，td直接删除这个div就行了

                }