我正在慢慢学习如何构建完全自定义的CMS系统,并且目前正在构建一个Image Uploader。我得到了我的PHP表单,但我想要的是使用AJAX发送数据并将数据返回到upload.php文件。到目前为止,我已成功将表单数据发送到PHP,并将图像上传到我的uploads文件夹。我遇到的麻烦是,没有任何东西可以告诉我是否成功。我希望图像显示成功和错误消息,如果不成功。我没有使用Javascript或AJAX的经验,所以有人可以看看我的代码并告诉我哪里出错了?
HTML上传表格
<div class="container-main">
<form action="" method="post" id="myForm" enctype="multipart/form-data">
<input type="file" name="file" id="file"><br>
<input type="submit" id="upload-img" name="submit" class="btn btn-success" value="Upload Image">
</form>
<div class="progress progress-striped active">
<div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width: 0%">
<span class="sr-only">0% Complete</span>
</div>
</div>
<div class="image">
<!-- uploaded image goes here -->
</div>
</div>
<script type="text/javascript" src="js/custom.js"></script>
JS
$('#upload-img').on('click', function() {
var file_data = $('#file').prop('files')[0];
var form_data = new FormData();
form_data.append('file', file_data);
alert(form_data);
$.ajax({
url: 'upload.php', // point to server-side PHP script
dataType: 'text', // what to expect back from the PHP script, if anything
cache: false,
contentType: false,
processData: false,
data: form_data,
type: 'post',
success: function(){
$(".image").html("<img src='"+response.responseText+"' width='100%'/>");
}
});
});
upload.php的
$allowedExts = array("gif", "jpeg", "jpg", "png","GIF","JPEG","JPG","PNG");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& in_array($extension, $allowedExts)) {
if ($_FILES["file"]["error"] > 0) {
echo "Invalid File Type";
} else {
$target = "../upload/";
move_uploaded_file($_FILES["file"]["tmp_name"], $target. $_FILES["file"]["name"]);
echo "../upload/" . $_FILES["file"]["name"];
}
} else {
echo "Error uploading image";
die();
}
非常感谢!
答案 0 :(得分:2)
您不需要使用.responseText
属性(它不存在)
你的功能应该是这样的:
success: function(response){
$(".image").html('<img src="'+response+'" width="100%"/>');
}
注意我改变了你的单引号/双引号。