Javascript ajaxSubmit uploadprogress始终返回100
我正在尝试制作一个进度条,向用户显示文件上载的数量,我正在使用ajaxSubmit和uploadprogress功能,但是该功能不会更新,它只会给我Javascript ajaxSubmit uploadprogress始终返回100,javascript,jquery,ajax,ruby-on-rails-4,jquery-forms-plugin,Javascript,Jquery,Ajax,Ruby On Rails 4,Jquery Forms Plugin,我正在尝试制作一个进度条,向用户显示文件上载的数量,我正在使用ajaxSubmit和uploadprogress功能,但是该功能不会更新,它只会给我100,就是这样: 以下是我的JS代码: function UploadImage(){ $('#new-post-upload-images').ajaxSubmit({ dataType: "json", beforeSend: function(a,f,o) { $('input.images').unwrap().css(
100
,就是这样:
以下是我的JS代码:
function UploadImage(){
$('#new-post-upload-images').ajaxSubmit({
dataType: "json",
beforeSend: function(a,f,o) {
$('input.images').unwrap().css('display','none');
$('#new_post_overlay,#upload_plus,#upload_wrapper .edit-menu-post').remove();
$(".new_post_btn").attr('disabled', true);
$(".load_new_post").show();
},
uploadProgress: function(event, position, total, percentComplete) {
console.log(percentComplete + '%');
},
complete: function(XMLHttpRequest, textStatus) {
var data= XMLHttpRequest.responseText;
var jsonResponse = JSON.parse(data);
$(".load_new_post").hide();
$('#new_post_wrapper').append('<div class="edit-menu-post"><a class="delete dismiss_image dismiss icon-cancel" title="Remove"><span>Delete</span></a><a class="repos-drag icon-drag" title="Reposition"><span>Reposition</span></a></div><div style="width:100%;height:100%;background-repeat: no-repeat;background-size: cover;position: relative;" id="preview"></div>').parent().find('.bg-port').val('0px 0px');
$('#preview').css('background-position', '0 0').css('background-image', 'url(' + jsonResponse[0]["path"] + ')');
var ids = $.map(jsonResponse, function(n){
return n["id"];
});
$('#uploaded_images_ids').val(ids.join("#"));
$(".new_post_btn").attr('disabled', false);
}
});
函数UploadImage(){
$(“#新上传后图像”).ajaxSubmit({
数据类型:“json”,
发送前:函数(a、f、o){
$('input.images').unwrap().css('display','none');
$(“#新建发布覆盖,#上载增强,#上载包装。编辑菜单发布”).remove();
$(“.new\u post\u btn”).attr('disabled',true);
$(“.load\u new\u post”).show();
},
上载进度:功能(事件、位置、总数、完成百分比){
console.log(完成百分比+'%');
},
完成:函数(XMLHttpRequest,textStatus){
var data=XMLHttpRequest.responseText;
var jsonResponse=JSON.parse(数据);
$(“.load\u new\u post”).hide();
$('new'u post'u wrapper').append('DeleteReposition').parent().find('.bg port').val('0px 0px');
$('#preview').css('background-position','0').css('background-image','url('+jsonResponse[0][“path”]+'));
var id=$.map(jsonResponse,函数(n){
返回n[“id”];
});
$('#上传的_图像_id').val(ids.join(“#”));
$(.new\u post\u btn”).attr('disabled',false);
}
});
}
以下是我的Ruby和HTML代码:
<div id="upload_wrapper">
<%= form_tag(upload_images_path, :multipart => true, method: :post ,id: "new-post-upload-images") do %>
<div class="new_photo_viewport">
<div class="load_new_post" style="340px">
<div><h2>Uploading <%= image_tag("ajax-loader2.gif") %></h2></div>
</div>
<div class="new_post_error edit-menu-post" style="background-color: #fff;">
<span><b>Recommendation:</b> Picture dimensions should be at least 800 x 600 for better quality and the size doesn't exceed 12MB</span>
</div>
<div id="new_post_wrapper" class="new_post_viewport" style="display:block;width:100%;height:100%;">
<div class="add_image_button" id="new_post_overlay">
<span class="icon-camera" id="upload_plus"><br><span>Upload</span></span>
<%= file_field_tag "images[]", type: :file, accept: "image/*" ,class: "images" %>
</div>
</div>
</div>
<% end %>
</div>
true,method::post,id:“新帖子上传图像”)do%>
上传
建议:图片尺寸应至少为800 x 600,以获得更好的质量,并且大小不超过12MB
上传
内部发送前:函数(a,f,o){
添加:
a.upload.addEventListener("progress", function(evt){
if (evt.lengthComputable) {
console.log(evt.loaded / evt.total);
}
}, false);
来源:我找到了这个问题的解决方案,我必须将我的代码部署到服务器上,我在本地主机上尝试,这是它总是给我的
100%
试试这个
$.ajax({
xhr : function() {
var xhr = new window.XMLHttpRequest();
xhr.upload.addEventListener('progress', function(e){
if(e.lengthComputable){
//you can get percent here
var percent_total = Math.round((e.loaded / e.total) * 100);
//then do with your progress bar, i used bootstrap here
$('#theProgressBar').attr('aria-valuenow', percent_total).css('width', percent_total + '%').text(percent_total + '%');
}
});
return xhr;
},
url: url,
data: formdata,
processData: false,
contentType: false,
type: 'POST',
dataType: "json",
success: function (response) {
},
err: function(err){
}
});
有人能回答这个问题吗?令人惊讶的是,现在还没有人回复这个帖子。请不要只发布代码作为答案,还要解释代码的作用以及它是如何解决问题的。带有解释的答案通常更有帮助,质量更好,更容易吸引选民