我是 XMLHttpRequest 的新手,我一直将它用作使用 JavaScript 的 FormData() 的 AJAX 文件上传器。
我遇到的问题是它似乎上传得很好,尽管我认为它没有将它发送到正确的 PHP 文件或者我的 PHP 错误,因为图片应该在的文件夹中没有显示任何内容。
目前不知道如何查看返回的html数据
JavaScript:
$("#form").submit(function(event) {
event.preventDefault();
event.stopPropagation();
var form = $(this);
var file = document.getElementById("file");
var data = new FormData();
var onerror = function(event) {
alert("An error occoured!");
}
var onprogressupdate = function(event) {
if(event.lengthComputable) {
var percent = event.loaded / event.total * 100;
$("#progress").html(percent+"%");
}
}
var onreadystatechange = function(event) {
if(request.status == 200 && request.readyState == 4) {
alert("Uploaded!");
$("#progress").hide();
$("#progress").html("");
}
else {
alert("Alternative state and/or status");
console.log("state: " + request.state);
console.log("readyState: " + request.readyState);
}
}
for(var i = 0; i < file.files.length; i++)
data.append('file[]', file.files[i]);
$("#progress").show();
$("#progress").html("Uploading files...");
var request = new XMLHttpRequest();
request.upload.addEventListener("error", onerror);
request.upload.addEventListener("progress", onprogressupdate);
request.upload.addEventListener("readystatechange", onreadystatechange);
request.open("post", "upload.php");
request.setRequestHeader("Content-type", "multipart/form-data");
request.send(data);
});
上传页面
<?php
if(isset($_FILES["file"])) {
$f = $_FILES["file"];
$dir = "data";
if(!file_exists($dir))
mkdir($dir);
foreach($f["name"] as $k => $name) {
$file = $dir."/".$name;
if($f["error"][$k] == 0 && move_uploaded_file($f["tmp_name"][$k], $file)) {
$uploaded[] = $file;
}
}
die(json_encode($uploaded));
}
?>