Remove Added Control With Javascript
Jul 17, 2010
I'm trying to removed the added controls. Here's the mark-up that adds upload controls to the page:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" [URL]
<html xmlns=[URL]">
<head>
<title>Multi File Upload</title>
</head>
<body>
<form id="form1" runat="server" enctype="multipart/form-data">
<p id="upload-area">
<input id="File1" type="file" runat="server" size="60" />
</p>
<input id="AddFile" type="button" value="Add file" onclick="addFileUploadBox()" />
<br />
<br />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<p><asp:Button ID="btnSubmit" runat="server" Text="Upload Now" OnClick="btnSubmit_Click" /></p>
<span id="Span1" runat="server" />
<script type="text/javascript">
function addFileUploadBox()
{
if (!document.getElementById || !document.createElement)
return false;
var uploadArea = document.getElementById ("upload-area");
if (!uploadArea)
return;
var newLine = document.createElement ("br");
uploadArea.appendChild (newLine);
var newUploadBox = document.createElement ("input");
// Set up the new input for file uploads
newUploadBox.type = "file";
newUploadBox.size = "60";
// The new box needs a name and an ID
if (!addFileUploadBox.lastAssignedId)
addFileUploadBox.lastAssignedId = 100;
newUploadBox.setAttribute ("id", "dynamic" + addFileUploadBox.lastAssignedId);
newUploadBox.setAttribute ("name", "dynamic:" + addFileUploadBox.lastAssignedId);
uploadArea.appendChild (newUploadBox);
addFileUploadBox.lastAssignedId++;
}
</script>
</form>
</body>
</html>
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