简而言之,我有一个包含多行的表。在每个主行下方,都有一个隐藏行,当按下该行时,将显示一个输入以上传文件和一个按钮以进行上传。 我想做的是在处理图像时显示.gif,完成后删除.gif,以便用户知道实际正在发生的事情。每个“上载”行都有其自己的.gif,因此,在单击上载按钮时,.gif应该从显示更改:从无更改为可见/内嵌块。抓取完成后上传了文件,如果上传成功,则应删除.gif,唯一的问题是js不会记住其余的第一个.gif。
请附加一些图片,然后附加js代码。
在这里您可以看到,如果按 + 符号,它将显示其下方的行,而ID 4和5的行则被隐藏,因为未按下按钮。
在这第三篇文章中,所有3篇文章都已经完成,因为我有一个警报来确认调试目的。尽管您可以看到只有一个消失了,其余的仍然显示了.gif。我想要的是,只要获取的响应正常,它就应该删除相应的.gif,尽管我不知道如何解决这个问题,甚至不知道如何开始。我以为可能是一个数组,用于存储通过data- *接收到的数组,但是由于我需要使用该数字从服务器发送响应,因此这没有任何意义。
代码:
function uploadPhotos(url, queryCollection){
this.url = url;
this.queryCollection = queryCollection;
this.upload = function(){
queryCollection.forEach(function(el){
el.addEventListener('submit', e => {
loadingGifEl = el.nextElementSibling;
button = el.closest('form').querySelector('input[type=submit]');
e.preventDefault();
if (loadingGifEl.classList.contains('hidden')) {
loadingGifEl.classList.remove('hidden');
button.classList.add('hidden');
}
const files = el.querySelector('[type=file]').files;
// const contentID = el.closest('tr').getAttribute('data-content-id');
if(el.closest('tr') == null){
var contentID = 0;
}else{
var contentID = el.closest('tr').getAttribute('data-content-id');
}
let formData = new FormData();
for (let i = 0; i < files.length; i++) {
let file = files[i];
formData.append('image_field[]', file, contentID + '___' + file.name);
}
/* Original working */
fetch(url, {
method: 'POST',
body: formData
})
.then(response => response.text())
.then(data => {
if (this.button.classList.contains('hidden')) {
this.loadingGifEl.classList.add('hidden');
this.button.classList.remove('hidden');
}
if(Number.isInteger(parseInt(data)) != true)
alert('Erro ao inserir na base de dados');
console.log(data);
})
.catch(function(error){
if (this.button.classList.contains('hidden')) {
this.loadingGifEl.classList.add('hidden');
this.button.classList.remove('hidden');
}
alert('Erro em fazer upload');
console.log(error);
});
});
});
}
}
如何构建HTML:
<table class="table table-hover" id="city-table">
<thead>
<th>ID</th>
<th>Nome(PT)</th>
<th>Descrição(PT)</th>
<th>Popular</th>
<th>Adicionado</th>
<th>Galeria</th>
<th>Ação</th>
</thead>
<tbody>
<?php
$resp = $city->fetchAll();
if(!empty($resp)){
for($cityCounter = 0; $cityCounter < count($resp); $cityCounter++){
switch($resp[$cityCounter]->isPopular){
case 0: $isPopular = 'Não';
break;
case 1: $isPopular = 'Sim';
break;
};
echo '<tr data-content-type="city" data-content-id="'.$resp[$cityCounter]->city_link_ID.'">';
echo '<td>'.$resp[$cityCounter]->city_link_ID.'</td>';
echo '<td>'.$resp[$cityCounter]->nameTranslated.'</td>';
echo '<td>'.$resp[$cityCounter]->descriptionTranslated.'</td>';
echo '<td>'.$isPopular.'</td>';
echo '<td>'.$resp[$cityCounter]->dateCreated.'</td>';
echo '<td>
<a class="btn btn-info btn-xs" id="show-gallery" href="#collapseGallery-'.$resp[$cityCounter]->city_link_ID.'" data-toggle="collapse">
<i class="lnr lnr-plus-circle"></i>
</a>
</td>';
echo '<td>
<a href="?edit=city&id='.$resp[$cityCounter]->city_link_ID.'" class="btn btn-info btn-xs pull-left" style="margin-bottom: 15px"><span class="lnr lnr-pencil"></span></a>
<button class="btn btn-danger btn-xs pull-right" id="delete-city"><span class="lnr lnr-trash"></span></button>
</td></tr>';
echo'
<tr data-content-type="city" data-content-id="'.$resp[$cityCounter]->city_link_ID.'" id="collapseGallery-'.$resp[$cityCounter]->city_link_ID.'" class="collapse">
<td colspan="14" class="bg-info">
<form enctype="multipart/form-data" method="post" class="file-upload" id="'.$resp[$cityCounter]->city_link_ID.'">
<input type="file" class="btn btn-info pull-left" size="100" name="image_field[]" multiple="multiple">
<input type="submit" class="btn btn-primary pull-right" name="Submit" value="Upload">
</form>
<div class="loading-gif-'.$resp[$cityCounter]->city_link_ID.' hidden">
<img style="margin-left: 25%" src="assets/img/processing.gif" alt="A carregar"/>
</div>
</td>
</tr>
';
}
}
?>
</tbody>
</table>
答案 0 :(得分:3)
使用loadingGifEl
与this. loadingGifEl
似乎是可疑的。如果我正确理解了您的问题,则希望跟踪显示的实际gif,以便在提取完成后再次将其隐藏。尽管未经测试,但以下内容应该可以使用。如果这不是您想要的,请告诉我。
function uploadPhotos(url, queryCollection){
this.url = url;
this.queryCollection = queryCollection;
this.upload = function(){
queryCollection.forEach(function(el){
el.addEventListener('submit', e => {
var loadingGifEl = el.nextElementSibling;
var button = el.closest('form').querySelector('input[type=submit]');
e.preventDefault();
if (loadingGifEl.classList.contains('hidden')) {
loadingGifEl.classList.remove('hidden');
button.classList.add('hidden');
}
const files = el.querySelector('[type=file]').files;
// const contentID = el.closest('tr').getAttribute('data-content-id');
if(el.closest('tr') == null){
var contentID = 0;
}else{
var contentID = el.closest('tr').getAttribute('data-content-id');
}
let formData = new FormData();
for (let i = 0; i < files.length; i++) {
let file = files[i];
formData.append('image_field[]', file, contentID + '___' + file.name);
}
/* Original working */
fetch(url, {
method: 'POST',
body: formData
})
.then(response => response.text())
.then(data => {
if (button.classList.contains('hidden')) {
loadingGifEl.classList.add('hidden');
button.classList.remove('hidden');
}
if(Number.isInteger(parseInt(data)) != true)
alert('Erro ao inserir na base de dados');
console.log(data);
})
.catch(function(error){
if (button.classList.contains('hidden')) {
loadingGifEl.classList.add('hidden');
button.classList.remove('hidden');
}
alert('Erro em fazer upload');
console.log(error);
});
});
});
}
}