Java 档案管理员只读,不能直接操纵,
http://www.ohchr.org。
您将不得不通过<代码>输入.files将其与你希望删除的<代码>index相比较。 同时,你将使用<代码>新数据传输()制定新的档案清单,排除你希望从档案清单中删除的档案。
采用这种办法,<代码>输入.files的价值 自我改变。
removeFileFromFileList(index) {
const dt = new DataTransfer()
const input = document.getElementById( files )
const { files } = input
for (let i = 0; i < files.length; i++) {
const file = files[i]
if (index !== i)
dt.items.add(file) // here you exclude the file. thus removing it.
}
input.files = dt.files // Assign the updates list
}
www.un.org/Depts/DGACM/index_spanish.htm ALTERNATIVE METHOD
另一种简单的方法是将档案管理员转换成一个阵列,然后pl。
但这种办法不会改变<代码>投入.files。
const input = document.getElementById( files )
// as an array, u have more freedom to transform the file list using array functions.
const fileListArr = Array.from(input.files)
fileListArr.splice(index, 1) // here u remove the file
console.log(fileListArr)
这个问题已经得到明确回答,但我要分享一些可能有助于其他人使用档案管理员的信息。
最好是把档案管理员当作一个阵列,但诸如分类、轮班、流行和斜体等方法不会奏效。 正如其他人所建议的那样,你可将档案管理员复制到一个阵列。 然而,不使用假体,就有一个简单的一线解决办法来处理这一转换。
// fileDialog.files is a FileList
var fileBuffer=[];
// append the file list to an array
Array.prototype.push.apply( fileBuffer, fileDialog.files ); // <-- here
// And now you may manipulated the result as required
// shift an item off the array
var file = fileBuffer.shift(0,1); // <-- works as expected
console.info( file.name + ", " + file.size + ", " + file.type );
// sort files by size
fileBuffer.sort(function(a,b) {
return a.size > b.size ? 1 : a.size < b.size ? -1 : 0;
});
在FF、Kook和IE10+测试了K。
如果你以日益绿色的浏览器(Chrome、Edre、Emge等)为目标,但也可在Safat 9+工作,或者你能够负担多彩,那么你可以通过使用<条码>Array.(<>,从(<><>>>>,将文档List转变成一个阵列:
let fileArray = Array.from(fileList);
然后很容易处理<代码>阵列。 文件与其他阵列一样。
由于我们处于超文本5的状态,这是我的解决办法。 这位学者认为,你将档案推向阿雷拉,而不是将其留给档案管理员,然后使用XHR2,将档案推向一个表格Data物体。 例如下。
Node.prototype.replaceWith = function(node)
{
this.parentNode.replaceChild(node, this);
};
if(window.File && window.FileList)
{
var topicForm = document.getElementById("yourForm");
topicForm.fileZone = document.getElementById("fileDropZoneElement");
topicForm.fileZone.files = new Array();
topicForm.fileZone.inputWindow = document.createElement("input");
topicForm.fileZone.inputWindow.setAttribute("type", "file");
topicForm.fileZone.inputWindow.setAttribute("multiple", "multiple");
topicForm.onsubmit = function(event)
{
var request = new XMLHttpRequest();
if(request.upload)
{
event.preventDefault();
topicForm.ajax.value = "true";
request.upload.onprogress = function(event)
{
var progress = event.loaded.toString() + " bytes transfered.";
if(event.lengthComputable)
progress = Math.round(event.loaded / event.total * 100).toString() + "%";
topicForm.fileZone.innerHTML = progress.toString();
};
request.onload = function(event)
{
response = JSON.parse(request.responseText);
// Handle the response here.
};
request.open(topicForm.method, topicForm.getAttribute("action"), true);
var data = new FormData(topicForm);
for(var i = 0, file; file = topicForm.fileZone.files[i]; i++)
data.append("file" + i.toString(), file);
request.send(data);
}
};
topicForm.fileZone.firstChild.replaceWith(document.createTextNode("Drop files or click here."));
var handleFiles = function(files)
{
for(var i = 0, file; file = files[i]; i++)
topicForm.fileZone.files.push(file);
};
topicForm.fileZone.ondrop = function(event)
{
event.stopPropagation();
event.preventDefault();
handleFiles(event.dataTransfer.files);
};
topicForm.fileZone.inputWindow.onchange = function(event)
{
handleFiles(topicForm.fileZone.inputWindow.files);
};
topicForm.fileZone.ondragover = function(event)
{
event.stopPropagation();
event.preventDefault();
};
topicForm.fileZone.onclick = function()
{
topicForm.fileZone.inputWindow.focus();
topicForm.fileZone.inputWindow.click();
};
}
else
topicForm.fileZone.firstChild.replaceWith(document.createTextNode("It s time to update your browser."));
我看到了非常迅速和短暂的工作。 在许多受欢迎的浏览器上测试(Chrome,Embras,Sara);
首先,你们必须把List改划为Array
var newFileList = Array.from(event.target.files);
删除特定内容
newFileList.splice(index,1);
我知道这是一个老问题,但这个问题在搜索引擎上排名较高。
<>FileList上的特性不能删除,但至少可在<>>>上改动。 我在此问题上的工作是,在通过支票和<代码>IsValid=false<的档案中添加一个财产<编码>IsValid=true。
然后,我仅通过名单确保只有<代码>IsValid=true的特性才被列入<>FormData。
感谢@Nicholas 安德森简单而直截了当,这里是你运用的法典,并在我的法典中使用 j。
页: 1
<input class="rangelog btn border-aero" id="file_fr" name="file_fr[]" multiple type="file" placeholder="{$labels_helpfiles_placeholder_file}">
<span style="cursor: pointer; cursor: hand;" onclick="cleanInputs($( #file_fr ))"><i class="fa fa-trash"></i> Empty chosen files</span>
JS CODE
function cleanInputs(fileEle){
$(fileEle).val("");
var parEle = $(fileEle).parent();
var newEle = $(fileEle).clone()
$(fileEle).remove();
$(parEle).prepend(newEle);
}
这是暂时性的,但我有同样的问题,我以这种方式解决了这个问题。 在我的案件中,我通过XMLHttp要求上载了档案,因此,我能够通过表格数据显示,将档案数据贴上手法。 <斯特隆> 功能性是指,你可以像你所想的那样,rag取、丢弃或选择多个文件(通过翻造文件再次赢得对手脚的 t声),从(入)卷宗清单中删除你想要的任何文件,并通过xmlhttprequest随处提交。 这就是我所做的。 这是我在这里的第一个职位,因此,这部法典是一小sy。 职业介绍。 Ah,我不得不使用j Query,而不是像在Joomla书写时那样的美元。
// some global variables
var clon = {}; // will be my FileList clone
var removedkeys = 0; // removed keys counter for later processing the request
var NextId = 0; // counter to add entries to the clone and not replace existing ones
jQuery(document).ready(function(){
jQuery("#form input").change(function () {
// making the clone
var curFiles = this.files;
// temporary object clone before copying info to the clone
var temparr = jQuery.extend(true, {}, curFiles);
// delete unnecessary FileList keys that were cloned
delete temparr["length"];
delete temparr["item"];
if (Object.keys(clon).length === 0){
jQuery.extend(true, clon, temparr);
}else{
var keysArr = Object.keys(clon);
NextId = Math.max.apply(null, keysArr)+1; // FileList keys are numbers
if (NextId < curFiles.length){ // a bug I found and had to solve for not replacing my temparr keys...
NextId = curFiles.length;
}
for (var key in temparr) { // I have to rename new entries for not overwriting existing keys in clon
if (temparr.hasOwnProperty(key)) {
temparr[NextId] = temparr[key];
delete temparr[key];
// meter aca los cambios de id en los html tags con el nuevo NextId
NextId++;
}
}
jQuery.extend(true, clon, temparr); // copy new entries to clon
}
// modifying the html file list display
if (NextId === 0){
jQuery("#filelist").html("");
for(var i=0; i<curFiles.length; i++) {
var f = curFiles[i];
jQuery("#filelist").append("<p id="file"+i+"" style= margin-bottom: 3px!important; >" + f.name + "<a style="float:right;cursor:pointer;" onclick="BorrarFile("+i+")">x</a></p>"); // the function BorrarFile will handle file deletion from the clone by file id
}
}else{
for(var i=0; i<curFiles.length; i++) {
var f = curFiles[i];
jQuery("#filelist").append("<p id="file"+(i+NextId-curFiles.length)+"" style= margin-bottom: 3px!important; >" + f.name + "<a style="float:right;cursor:pointer;" onclick="BorrarFile("+(i+NextId-curFiles.length)+")">x</a></p>"); // yeap, i+NextId-curFiles.length actually gets it right
}
}
// update the total files count wherever you want
jQuery("#form p").text(Object.keys(clon).length + " file(s) selected");
});
});
function BorrarFile(id){ // handling file deletion from clone
jQuery("#file"+id).remove(); // remove the html filelist element
delete clon[id]; // delete the entry
removedkeys++; // add to removed keys counter
if (Object.keys(clon).length === 0){
jQuery("#form p").text(Object.keys(clon).length + " file(s) selected");
jQuery("#fileToUpload").val(""); // I had to reset the form file input for my form check function before submission. Else it would send even though my clone was empty
}else{
jQuery("#form p").text(Object.keys(clon).length + " file(s) selected");
}
}
// now my form check function
function check(){
if( document.getElementById("fileToUpload").files.length == 0 ){
alert("No file selected");
return false;
}else{
var _validFileExtensions = [".pdf", ".PDF"]; // I wanted pdf files
// retrieve input files
var arrInputs = clon;
// validating files
for (var i = 0; i < Object.keys(arrInputs).length+removedkeys; i++) {
if (typeof arrInputs[i]!="undefined"){
var oInput = arrInputs[i];
if (oInput.type == "application/pdf") {
var sFileName = oInput.name;
if (sFileName.length > 0) {
var blnValid = false;
for (var j = 0; j < _validFileExtensions.length; j++) {
var sCurExtension = _validFileExtensions[j];
if (sFileName.substr(sFileName.length - sCurExtension.length, sCurExtension.length).toLowerCase() == sCurExtension.toLowerCase()) {
blnValid = true;
break;
}
}
if (!blnValid) {
alert("Sorry, " + sFileName + " is invalid, allowed extensions are: " + _validFileExtensions.join(", "));
return false;
}
}
}else{
alert("Sorry, " + arrInputs[0].name + " is invalid, allowed extensions are: " + _validFileExtensions.join(" or "));
return false;
}
}
}
// proceed with the data appending and submission
// here some hidden input values i had previously set. Now retrieving them for submission. My form wasn t actually even a form...
var fecha = jQuery("#fecha").val();
var vendor = jQuery("#vendor").val();
var sku = jQuery("#sku").val();
// create the formdata object
var formData = new FormData();
formData.append("fecha", fecha);
formData.append("vendor", encodeURI(vendor));
formData.append("sku", sku);
// now appending the clone file data (finally!)
var fila = clon; // i just did this because I had already written the following using the "fila" object, so I copy my clone again
// the interesting part. As entries in my clone object aren t consecutive numbers I cannot iterate normally, so I came up with the following idea
for (i = 0; i < Object.keys(fila).length+removedkeys; i++) {
if(typeof fila[i]!="undefined"){
formData.append("fileToUpload[]", fila[i]); // VERY IMPORTANT the formdata key for the files HAS to be an array. It will be later retrieved as $_FILES[ fileToUpload ][ temp_name ][i]
}
}
jQuery("#submitbtn").fadeOut("slow"); // remove the upload btn so it can t be used again
jQuery("#drag").html(""); // clearing the output message element
// start the request
var xhttp = new XMLHttpRequest();
xhttp.addEventListener("progress", function(e) {
var done = e.position || e.loaded, total = e.totalSize || e.total;
}, false);
if ( xhttp.upload ) {
xhttp.upload.onprogress = function(e) {
var done = e.position || e.loaded, total = e.totalSize || e.total;
var percent = done / total;
jQuery("#drag").html(Math.round(percent * 100) + "%");
};
}
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var respuesta = this.responseText;
jQuery("#drag").html(respuesta);
}
};
xhttp.open("POST", "your_upload_handler.php", true);
xhttp.send(formData);
return true;
}
};
现在就是这样做的风格。 我很抱着新意,但所有这一切实际上都为我工作,在我看来,我是这样。
<div id="form" class="formpos">
<!-- Select the pdf to upload:-->
<input type="file" name="fileToUpload[]" id="fileToUpload" accept="application/pdf" multiple>
<div><p id="drag">Drop your files here or click to select them</p>
</div>
<button id="submitbtn" onclick="return check()" >Upload</button>
// these inputs are passed with different names on the formdata. Be aware of that
// I was echoing this, so that s why I use the single quote for php variables
<input type="hidden" id="fecha" name="fecha_copy" value=" .$fecha. " />
<input type="hidden" id="vendor" name="vendorname" value=" .$vendor. " />
<input type="hidden" id="sku" name="sku" value=" .$sku. "" />
</div>
<h1 style="width: 500px!important;margin:20px auto 0px!important;font-size:24px!important;">File list:</h1>
<div id="filelist" style="width: 500px!important;margin:10px auto 0px!important;">Nothing selected yet</div>
这样做的风格。 我必须赞扬其中一些行为,而必须废除乔马拉行为。
.formpos{
width: 500px;
height: 200px;
border: 4px dashed #999;
margin: 30px auto 100px;
}
.formpos p{
text-align: center!important;
padding: 80px 30px 0px;
color: #000;
}
.formpos div{
width: 100%!important;
height: 100%!important;
text-align: center!important;
margin-bottom: 30px!important;
}
.formpos input{
position: absolute!important;
margin: 0!important;
padding: 0!important;
width: 500px!important;
height: 200px!important;
outline: none!important;
opacity: 0!important;
}
.formpos button{
margin: 0;
color: #fff;
background: #16a085;
border: none;
width: 508px;
height: 35px;
margin-left: -4px;
border-radius: 4px;
transition: all .2s ease;
outline: none;
}
.formpos button:hover{
background: #149174;
color: #0C5645;
}
.formpos button:active{
border:0;
}
我希望这一帮助。
这样做可能有更明智的办法,但这里是我的解决办法。 With Jquery
fileEle.value = "";
var parEle = $(fileEle).parent();
var newEle = $(fileEle).clone()
$(fileEle).remove();
parEle.append(newEle);
基本上,你将投入的价值区分开来。 衣着,把衣帽子放在旧的土地上。
如果你向数据库发出一份附有档案的邮递请求,而且你有希望在OMOM中发送的档案。
你可以简单地检查档案清单上的档案是否出现在你的人力部,当然,如果它不把这个内容寄给非银的话。
我认识到这是一个很老的问题,但我正在使用html的多份卷宗选择上载,以查找在提交之前可以有选择地在海关调查中删除的任何档案。
a. 诸如:
let uploadedFiles = [];
//inside DOM file select "onChange" event
let selected = e.target.files[0] ? e.target.files : [];
uploadedFiles = [...uploadedFiles , ...selected ];
createElements();
创建的“查询”:
function createElements(){
uploadedFiles.forEach((f,i) => {
//remove DOM elements and re-create them here
/* //you can show an image like this:
* let reader = new FileReader();
* reader.onload = function (e) {
* let url = e.target.result;
* // create <img src=url />
* };
* reader.readAsDataURL(f);
*/
element.addEventListener("click", function () {
uploadedFiles.splice(i, 1);
createElements();
});
}
}
向服务器发送:
let fd = new FormData();
uploadedFiles.forEach((f, i) => {
fd.append("files[]", f);
});
fetch("yourEndpoint", {
method: "POST",
body: fd,
headers: {
//do not set Content-Type
}
}).then(...)
I mix the solutions of many developers and reach to this solution. It change the original array list after deletion which means if we want to save the images then we can do so.
<script>
var images = [];
function image_select() {
var image = document.getElementById( image ).files;
for (i = 0; i < image.length; i++) {
images.push({
"name" : image[i].name,
"url" : URL.createObjectURL(image[i]),
"file" : image[i],
})
}
document.getElementById( container ).innerHTML = image_show();
}
function image_show() {
var image = "";
images.forEach((i) => {
image += `<div class="image_container d-flex justify-content-center position-relative">
<img src="`+ i.url +`" alt="Image">
<span class="position-absolute" onclick="delete_image(`+ images.indexOf(i) +`)">×</span>
</div>`;
})
return image;
}
function delete_image(e) {
images.splice(e, 1);
document.getElementById( container ).innerHTML = image_show();
const dt = new DataTransfer()
const input = document.getElementById( image )
const { files } = input
for (let i = 0; i < files.length; i++) {
const file = files[i]
if (e !== i)
dt.items.add(file);
}
input.files = dt.files;
console.log(document.getElementById( image ).files);
}
</script>
**** ***
<body>
<div class="container mt-3 w-100">
<div class="card shadow-sm w-100">
<div class="card-header d-flex justify-content-between">
<h4>Preview Multiple Images</h4>
<form class="form" action="{{route( store )}}" method="post" id="form" enctype="multipart/form-data">
@csrf
<input type="file" name="image[]" id="image" multiple onchange="image_select()">
<button class="btn btn-sm btn-primary" type="submit">Submit</button>
</form>
</div>
<div class="card-body d-flex flex-wrap justify-content-start" id="container">
</div>
</div>
</div>
</body>
**** 页: 1
<style>
.image_container {
height: 120px;
width: 200px;
border-radius: 6px;
overflow: hidden;
margin: 10px;
}
.image_container img {
height: 100%;
width: auto;
object-fit: cover;
}
.image_container span {
top: -6px;
right: 8px;
color: red;
font-size: 28px;
font-weight: normal;
cursor: pointer;
}
</style>
我正在使用字典,并抱怨说,由于进行了严格的类型检查。 下列法典在Svelte为我工作。 它与Svelte毫无关系。 因此,它应当与所有使用多边贸易体系的图书馆/设施合作。
const ele = document.getElementById( file-upload ) as HTMLInputElement;
if (ele) {
ele.value = "";
}
你不妨建立一个阵列,而不是只读的档案清单。
var myReadWriteList = new Array();
// user selects files later...
// then as soon as convenient...
myReadWriteList = FileListReadOnly;
之后,你把清单上载,而不是放在名单上。 我不肯定你的工作环境,但我正在与我发现的 j虫合作,而我必须做的是利用原始来源,用<代码><script>标签”。 之后,我增加了我的阵列,以便它能够作为一个全球变量发挥作用,而gin本可以参考。
然后,这只是夸大提及的内容。
我认为,这也会使你增加 d和amp;如果名单上的建筑只是读物,那么你又怎么能够把档案放在名单上?
:
我以这种方式解决这一问题。
//position -> the position of the file you need to delete
this.fileImgs.forEach((item, index, object) => {
if(item.idColor === idC){
if(item.imgs.length === 1){
object.splice(index,1) }
else{
const itemFileImgs = [...item.imgs];
itemFileImgs.splice(position,1)
item.imgs = [...itemFileImgs]
}
}});
console.log(this.fileImgs)
In vue js:
self.$refs.inputFile.value = I am trying to create a search text-field like on the Apple website. The HTML looks like this: <div class="frm-search"> <div> <input class="btn" type="image" src="http://www....
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