Javascript 计算ajax上载进度的多个文件长度
我在phpbb posting_attach_body.html中有以下内容,它监视文件的上载进度。它可以很好地处理一个文件,但是如果我尝试上传多个文件,那么它将只计算第一个文件的大小,并使用该长度显示上传进度条。如何将其更改为计算并使用多个文件上载的总数 javascript函数*add_more_upload()*加载额外的表单字段以添加文件,允许多次上载Javascript 计算ajax上载进度的多个文件长度,javascript,php,ajax,upload,Javascript,Php,Ajax,Upload,我在phpbb posting_attach_body.html中有以下内容,它监视文件的上载进度。它可以很好地处理一个文件,但是如果我尝试上传多个文件,那么它将只计算第一个文件的大小,并使用该长度显示上传进度条。如何将其更改为计算并使用多个文件上载的总数 javascript函数*add_more_upload()*加载额外的表单字段以添加文件,允许多次上载 <div class="panel bg3" id="attach-panel"> <div class="i
<div class="panel bg3" id="attach-panel">
<div class="inner"><span class="corners-top"><span></span></span>
<p>{L_ADD_ATTACHMENT_EXPLAIN}</p>
<fieldset class="fields2">
<dl>
<dt><label for="fileupload">{L_FILENAME}:</label></dt>
<dd>
<!-- IF TESTY -->
<input type="url" name="remfile" id="remfile" class="inputbox autowidth" /> Remote File URL<br />
<input type="text" name="altname" id="altname" class="inputbox autowidth" /> Alternative Name<br />
<!-- ENDIF -->
<input type="file" name="fileupload" id="fileupload" maxlength="{FILESIZE}" value="" class="inputbox autowidth" />
<input type="button" class="button2" name="files_" value="+" style="width: 40px" onclick="add_more_upload()" title="" />
</dd>
</dl>
<dl>
<dt><label for="filecomment">{L_FILE_COMMENT}:</label></dt>
<dd><textarea name="filecomment" id="filecomment" rows="1" cols="40" class="inputbox autowidth">{FILE_COMMENT}</textarea></dd>
</dl>
<input type="hidden" name="proxid" id="proxid" value="1" />
<div id="multiple"></div>
<dl>
<dd>
<input type="submit" name="add_file" value="{L_ADD_FILE}" class="button2" onclick="uploadFile(); " />
</dd>
</dl>
</fieldset>
<progress id="progressBar" value="0" max="100" style="width:300px;"></progress> <h3 id="status"></h3> <p id="loaded_n_total"></p>
<script>
function _(el){
return document.getElementById(el);
}
function uploadFile(){
var file = _("fileupload").files[0];
var formdata = new FormData();
formdata.append("fileupload", file);
var ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", progressHandler, false);
//ajax.addEventListener("load", completeHandler, false);
ajax.addEventListener("error", uploadFile, false);
ajax.addEventListener("abort", abortHandler, false);
ajax.addEventListener("complete", completeHandler, false);
ajax.open("POST","forum/file_upload_parser.php");
ajax.send(formdata);
}
function progressHandler(event){
_("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
var percent = (event.loaded / event.total) * 100; _("progressBar").value = Math.round(percent); _("status").innerHTML = Math.round(percent)+"% uploaded... please wait";
}
function errorHandler(event){
_("status").innerHTML = "Upload Failed";
}
function abortHandler(event){
_("status").innerHTML = "Upload Aborted";
}
function completeHandler(event){
_("status").innerHTML = event.target.responseText; _("progressBar").value = 100;
_("status").innerHTML = "Upload Complete. Processing File... please wait.";
}
</script>
<span class="corners-bottom"><span></span></span></div>
</div>
{L_添加_附件_解释}
{L_FILENAME}:
远程文件URL
备选名称
{L_FILE_COMMENT}:
{FILE_COMMENT}
函数(el){
返回文档.getElementById(el);
}
函数uploadFile(){
var file=U8;(“文件上载”).files[0];
var formdata=new formdata();
formdata.append(“文件上传”,文件);
var ajax=new-XMLHttpRequest();
addEventListener(“progress”,progressHandler,false);
//addEventListener(“加载”,completeHandler,false);
addEventListener(“错误”,上传文件,错误);
addEventListener(“abort”,abortHandler,false);
addEventListener(“complete”,completeHandler,false);
open(“POST”,“forum/file_upload_parser.php”);
发送(formdata);
}
函数progressHandler(事件){
_(“loaded_n_total”).innerHTML=“Uploaded”+event.loaded+”字节+event.total;
var percent=(event.loaded/event.total)*100;(“progressBar”).value=Math.round(percent);(“status”).innerHTML=Math.round(percent)+%uploaded…请稍候;
}
函数errorHandler(事件){
_(“状态”).innerHTML=“上传失败”;
}
函数abortHandler(事件){
_(“状态”).innerHTML=“上传中止”;
}
函数completeHandler(事件){
_(“状态”).innerHTML=event.target.responseText;(“progressBar”).value=100;
_(“状态”).innerHTML=“上载完成。正在处理文件…请稍候。”;
}
添加更多文件功能:
function add_more_upload() {
var id = document.getElementById('proxid').value ;
var div = document.getElementById('multiple');
var childdiv = document.createElement("div");
childdiv.setAttribute('id','multiple'+ id);
var html = "<dl><dt><label for='fileupload'>{L_FILENAME}:</label></dt><dd><input type='file' name='fileupload" + id + "' id='fileupload" + id + "' maxlength='{FILESIZE}' value='' class='inputbox autowidth' /><input type='button' class='button2' name='files_" + id + "' value='-' style='width: 40px' onclick='remove_more_upload(" + id + ")' title='' /></dd></dl><dl><dt><label for='filecomment'>{L_FILE_COMMENT}:</label></dt><dd><textarea name='filecomment" + id + "' id='filecomment" + id + "' rows='1' cols='40' class='inputbox autowidth'>{FILE_COMMENT}</textarea></dd></dl>";
childdiv.innerHTML = html;
div.appendChild(childdiv) ;
document.getElementById('proxid').value++;
}
函数添加更多上传(){
var id=document.getElementById('proxid')。值;
var div=document.getElementById('multiple');
var childdiv=document.createElement(“div”);
setAttribute('id','multiple'+id);
var html=“{L_FILENAME}:{L_FILE_COMMENT}:{FILE_COMMENT}”;
childdiv.innerHTML=html;
儿童组(儿童组);
document.getElementById('proxid')。value++;
}
看起来您一次只上载一个文件:(“文件上载”).files[0
此代码允许您一次上载多个文件:
<script>
var totalSize = 0;
var formdata = new FormData();
function processFiles(ctrl) {
// if the control has files
if(ctrl.files)
{
for(var i=0; i < ctrl.files.length; i++) {
var file = ctrl.files[i];
totalSize += file.size;
formdata.append("fileupload" + i, file);
}
}
}
// pass the name of the div holding the file upload controls
function uploadFiles(ctrId) {
totalSize = 0;
formdata = new FormData();
// builds a set of INPUT controls and tries to process any files
var uploadControls = document.getElementById(ctrId).getElementsByTagName("INPUT");
for(var i = 0; i< uploadControls.length; i++)
{
processFiles(uploadControls[i]);
}
var ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", progressHandler, false);
ajax.open("POST","forum/file_upload_parser.php");
ajax.send(formdata);
}
function progressHandler(event) {
document.getElementById("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+totalSize;
var percent = (event.loaded / totalSize) * 100; _("progressBar").value = Math.round(percent); _("status").innerHTML = Math.round(percent)+"% uploaded... please wait";
}
</script>
<div id="fileuploads">
<input type="file" name="fileupload" id="fileupload0" multiple maxlength="{FILESIZE}" value="" class="inputbox autowidth" />
<input type="file" name="fileupload" id="fileupload1" multiple maxlength="{FILESIZE}" value="" class="inputbox autowidth" />
<input type="file" name="fileupload" id="fileupload3" multiple maxlength="{FILESIZE}" value="" class="inputbox autowidth" />
</div>
<input type="submit" name="add_file" value="{L_ADD_FILE}" class="button2" onclick="uploadFiles('fileuploads'); " />
<div id="loaded_n_total">waiting...</div>
var totalSize=0;
var formdata=new formdata();
函数processFiles(ctrl){
//如果控件有文件
如果(ctrl.files)
{
对于(var i=0;i
您需要将其纳入现有代码中,它只是为了证明概念,向您展示一种跟踪一组上载文件的累积进度的方法。crtlId指的是什么?如果您查看按钮的onClick事件-它是文件上载控件的第一个按钮。确定上载两个文件时,它只拾取一个并报告大小,而不是第二个。但这两个文件仍在上传。我希望这能为每个文件使用一个单独的上传输入区域,而不是在输入标签中使用多个。在输入标记中使用multiple并选择两个文件时,如果选择yes,则会报告两个文件的总和,但遗憾的是,add_more_files函数无法正确处理此问题。什么add_more_files函数?您的原始问题中没有包含一个,因为您没有包含add#u more_upload()函数,所以我的答案没有它。