我想编写一个在 IE 中工作的文件上传脚本，但是我正在编写的两种类型的代码在 IE 中存在问题。
请帮忙。如何编写在 IE 中工作的文件上传脚本？
Type 1
Problem Not Support File Api In IE（不使用的诀窍是什么？）
<!DOCTYPE html>
<html>
<head runat="server">
<title></title>
<script src="Scripts/jquery-1.6.2.js" type="text/javascript"></script>
<script type="text/javascript">
function updateSize() {
var nBytes = 0;
var nFiles=0;
oFiles = document.getElementById("uploadInput").files;
nFiles = oFiles.length;
for (var nFileId = 0; nFileId < nFiles; nFileId++) {
nBytes += oFiles[nFileId].size;
}
var sOutput = nBytes + " bytes";
// optional code for multiples approximation
for (var aMultiples = ["KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"], nMultiple = 0, nApprox = nBytes / 1024; nApprox > 1; nApprox /= 1024, nMultiple++) {
sOutput = nApprox.toFixed(3) + " " + aMultiples[nMultiple] + " (" + nBytes + " bytes)";
}
document.getElementById("fileNum").innerHTML = nFiles;
document.getElementById("fileSize").innerHTML = sOutput;
}
// end of optional code
</script>
</head>
<body>
<form id="form1" runat="server">
<p><input id="uploadInput" type="file" name="myFiles" onchange="updateSize();" multiple /> selected files: <span id="fileNum">0</span>; total size: <span id="fileSize">0</span></p>
<p><input type="submit" value="Send file"></p>
</form>
</body>
</html>
类型 2
问题不支持 document.getElementById('fileToUpload') .files[0]（不是获取文件 [0] 的诀窍吗？）
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script type="text/javascript">
function fileSelected() {
var file = document.getElementById('fileToUpload').files[0];
if (file) {
var fileSize = 0;
if (file.size > 1024 * 1024)
fileSize = (Math.round(file.size * 100 / (1024 * 1024)) / 100).toString() + 'MB';
else
fileSize = (Math.round(file.size * 100 / 1024) / 100).toString() + 'KB';
document.getElementById('fileName').innerHTML = 'Name: ' + file.name;
document.getElementById('fileSize').innerHTML = 'Size: ' + fileSize;
document.getElementById('fileType').innerHTML = 'Type: ' + file.type;
}
}
function uploadFile() {
var fd = new FormData();
fd.append("fileToUpload", document.getElementById('fileToUpload').files[0]);
var xhr = new XMLHttpRequest();
xhr.upload.addEventListener("progress", uploadProgress, false);
xhr.addEventListener("load", uploadComplete, false);
xhr.addEventListener("error", uploadFailed, false);
xhr.addEventListener("abort", uploadCanceled, false);
$.post("UploadHandler.ashx");
//xhr.open("POST", "UploadHandler.ashx");
xhr.send(fd);
}
function uploadProgress(evt) {
if (evt.lengthComputable) {
var percentComplete = Math.round(evt.loaded * 100 / evt.total);
document.getElementById('progressNumber').innerHTML = percentComplete.toString() + '%';
document.getElementById('prog').value = percentComplete;
}
else {
document.getElementById('progressNumber').innerHTML = 'unable to compute';
}
}
function uploadComplete(evt) {
/* This event is raised when the server send back a response */
alert(evt.target.responseText);
}
function uploadFailed(evt) {
alert("There was an error attempting to upload the file.");
}
function uploadCanceled(evt) {
alert("The upload has been canceled by the user or the browser dropped the connection.");
}
</script>
</head>
<body>
<form id="form1">
<div>
<label for="fileToUpload">
Select a File to Upload</label>
<input type="file" name="fileToUpload[]" id="fileToUpload" onchange="fileSelected();" />
</div>
<div id="fileName">
</div>
<div id="fileSize">
</div>
<div id="fileType">
</div>
<div>
<input type="button" onclick="uploadFile()" value="Upload" />
</div>
<div id="progressNumber">
</div>
<progress id="prog" value="0" max="100.0"></progress>
</form>
</body>
请帮忙 ：（