jQuery删除当前节点元素

//state用来判断获取内容的状态,单击一次获取文本内容,第二次单击删除内容
var state = 0;
function getfilecontent(btn){
//这边用来判断是否已经获取到文本内容,获取到则删除
if(state == 1){
var td = $(btn).parent().parent().next().children();
td.remove();
state = 0;
return;
}
var filePath = document.getElementById("filepath").innerHTML.trim();
var tr = btn.parentNode.parentNode;
var tds = tr.getElementsByTagName("td");
var fileName = tds[0].innerHTML.trim();
$.post("<%=basePath%>intelligentjournal/getfilecontent.do", 
{
"filePath":filePath,
"fileName":fileName
},function(fileContent){
var file = fileContent;
var ntr = document.createElement("tr");
ntr.innerHTML = '<td style="border:1px solid black" id = "td">' + file + '</td>';
var tr1 = document.getElementById(fileName);
tr1.appendChild(ntr);
},"JSON");
state = 1;
}