我有一段代码,通过确定上传是否成功、取消或不成功,它会显示相关消息:
function stopImageUpload(success, imagefilename){
if (success == 1){
result = '<span class="imagemsg'+imagecounter+'">The file was uploaded successfully</span>';
$('.listImage').eq(window.lastUploadImageIndex).append('<div>' + htmlEncode(imagefilename) + '<button type="button" class="deletefileimage" image_file_name="' + imagefilename + '">Remove</button><br/><hr/></div>');
}
else if (success == 2){
result = '<span class="imagemsg'+imagecounter+'"> The file upload was cancelled</span>';
}
else {
result = '<span class="imagemsg'+imagecounter+'">There was an error during file upload</span>';
}
});
现在根据上传的结果,我试图确定每条消息应该出现的时间:
iframe 加载的当前代码:
$(imageuploadform).find(".imageCancel").on("click", function(event) {
$('.upload_target_image').get(0).contentwindow;
stopImageUpload(2);
$("iframe[name='upload_target_image']").on("load",function() {
stopImageUpload(1);
}).attr("src", "cancelimage.php");
iframe 加载的原始代码:
$(imageuploadform).find(".imageCancel").on("click", function(event) {
$('.upload_target_image').get(0).contentwindow;
$("iframe[name='upload_target_image']").on("load",function() {
stopImageUpload(2);
}).attr("src", "cancelimage.php");
原始代码发生的情况是,当文件成功上传时,发生的事情是瞬间显示成功 == 1 消息,但随后立即显示取消消息,即成功 - 2。
这显然是不正确的,所以尝试修复它,我尝试了当前的代码解决方案,所以我认为如果取消,显示成功 == 2 消息,如果文件成功,则显示成功 == 1 消息那条信息没有改变。
但问题是当前代码在此行下方提供了错误,而原始代码从未提供此错误:
function htmlEncode(value) { return $('<div/>').text(value).html(); }
显示的错误是:
typeError: $(...).text(...).html 不是函数
我的问题是如何解决这个错误?我假设我需要更改 iframe 加载中的代码以防止这种情况发生。
更新:
HTML:
<form action='imageupload.php' method='post' enctype='multipart/form-data' target='upload_target_image' onsubmit='return imageClickHandler(this);' class='imageuploadform' >
<p class='imagef1_upload_form' align='center'><label>
Image File: <input name='fileImage' type='file' class='fileImage' /></label><br/>
<input type='submit' name='submitImageBtn' class='sbtnimage' value='Upload' /></label>
<input type='reset' name='imageCancel' class='imageCancel' value='Cancel' /></label>" +
</p><p class='listImage' align='left'></p>" +
<iframe class='upload_target_image' name='upload_target_image' src='#' style='width:0px;height:0px;border:0px;solid;#fff;'></iframe></form>
查询:
var sourceImageForm;
function htmlEncode(value) { return $('<div/>').text(value).html(); }
//Function for when file starts uploading
function startImageUpload(imageuploadform){
$(imageuploadform).find('.imagef1_upload_process').css('visibility','visible');
$(imageuploadform).find('.imagef1_cancel').css('visibility','visible');
$(imageuploadform).find('.imagef1_upload_form').css('visibility','hidden');
$(imageuploadform).find('.imagemsg').css('visibility','hidden');
sourceImageForm = imageuploadform;
$(imageuploadform).find(".imageCancel").on("click", function(event) {
$('.upload_target_image').get(0).contentwindow;
stopImageUpload(2);
$("iframe[name='upload_target_image']").on("load",function() {
stopImageUpload(1);
}).attr("src", "cancelimage.php");
});
return true;
}
var imagecounter = 0;
//Function for after upload has stopped
function stopImageUpload(success, imagefilename){
var result = '';
imagecounter++;
if (success == 1){
result = '<span class="imagemsg'+imagecounter+'">The file was uploaded successfully</span>';
$('.listImage').eq(window.lastUploadImageIndex).append('<div>' + htmlEncode(imagefilename) + '<button type="button" class="deletefileimage" image_file_name="' + imagefilename + '">Remove</button><br/><hr/></div>');
}
else if (success == 2){
result = '<span class="imagemsg'+imagecounter+'"> The file upload was cancelled</span>';
}
else {
result = '<span class="imagemsg'+imagecounter+'">There was an error during file upload</span>';
}
$(sourceImageForm).find(".fileImage").replaceWith("<input type='file' class='fileImage' name='fileImage' />");
var _imagecounter = imagecounter;
$('.listImage').eq(window.lastUploadImageIndex).find(".deletefileimage").on("click", function(event) {
var image_file_name = $(this).attr('image_file_name');
jQuery.ajax("deleteimage.php?imagefilename=" + image_file_name)
.done(function(data) {
$(".imagemsg" + _imagecounter).html(data);
});
$(this).parent().remove();
});
return true;
}
//clickHandler function which handle the submit when upload button is click
function imageClickHandler(imageuploadform){
if(imageValidation(imageuploadform)){
window.lastUploadImageIndex = $('.imageuploadform').index(imageuploadform);
return startImageUpload(imageuploadform);
}
return false;
}
PHP(上传文件服务器端):
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
session_start();
if ($_FILES['fileImage']['error'] === UPLOAD_ERR_OK) {
$result = 0;
if (getimagesize($_FILES['fileImage']['tmp_name'])) {
if ((($_FILES["fileImage"]["type"] == "image/gif") || ($_FILES["fileImage"]["type"] == "image/jpeg") || ($_FILES["fileImage"]["type"] == "image/pjpeg") || ($_FILES["fileImage"]["type"] == "image/jpg")) && ($_FILES['fileImage']['size'] > 0)) {
if (is_file("ImageFiles/" . $_FILES['fileImage']['name'])) {
$parts = explode(".", $_FILES['fileImage']['name']);
$ext = array_pop($parts);
$base = implode(".", $parts);
$n = 2;
while (is_file("ImageFiles/" . $base . "_" . $n . "." . $ext))
$n++;
$_FILES['fileImage']['name'] = $base . "_" . $n . "." . $ext;
move_uploaded_file($_FILES["fileImage"]["tmp_name"], "ImageFiles/" . $_FILES["fileImage"]["name"]);
$result = 1;
}
else {
move_uploaded_file($_FILES["fileImage"]["tmp_name"], "ImageFiles/" . $_FILES["fileImage"]["name"]);
$result = 1;
}
}
}
} else {
echo "Upload was not successful";
}
?>
<script language="javascript" type="text/javascript">window.top.stopImageUpload(<?php
echo $result;
?>, '<?php
echo $_FILES['fileImage']['name'];
?>');</script>