jquery file upload plugin file upload without refreshing the page - jquery-file-upload

Question

I am using jquery file upload plugin for uploading files to my server but when server returns a json how to display that data without my page refreshing.I know that many posts says using iframe we can acheive i am very new to jquery and ajax can any figure it out and help me thank you in advance.
$('#fileupload').fileupload({
xhrFields: {withCredentials: true},
url: "fileUpload.do?",
type:"POST",
autoUpload: true,
formdata:{name:'FolderId',value:getfolderId()},
});
function getfolderId(){
var FolderId
alert();
$('#fileupload').on("click",function(){
FolderId=document.getElementById('currentFolder').value;
document.getElementById('selectedFolder').value = FolderId;
});
return FolderId;
}`
</form>`<form id="fileupload" on action="fileUpload.do" method="POST" enctype="multipart/form-data">
<div class="row fileupload-buttonbar">
<label for="form-upload">
<img src="htdocs/images/add_file.png"
style="width: 20px; height: 20px; border: 0" >
</label>
<input id="form-upload" type="file" name="upload" multiple style="opacity: 0; filter:alpha(opacity: 0);">
<im:hidden name="selectedFolder" id="selectedFolder" value="1" />
</div>
<div class="col-lg-5 fileupload-progress fade">
<div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100">
<div class="progress-bar progress-bar-success" style="width:0%;"></div>
</div>
<div class="progress-extended"> </div>
</div>
</div>
<table role="presentation" class="table table-striped"><tbody class="files"></tbody></table>
</form>`

Answer 1

$('#addFile-link').bind("click",function(){
var FolderId
FolderId=document.getElementById('currentFolder').value;
document.getElementById('selectedFolder').value = FolderId;
if( FolderId==" " || FolderId==0){
$('#input').prop('disabled', true);
showFileMSg();
//alert("kindly select a folder to upload files");
}
else{
$('#input').prop('disabled', false);
$('#fileupload').fileupload({
xhrFields: {withCredentials: true},
url: "fileUpload.do?",
type:"POST",
dataType : "JSON",
autoUpload: true,
formdata:{name:'FolderId',value:FolderId},
disableImagePreview:true,
filesContainer: $('table.files'),
uploadTemplateId: null,
downloadTemplateId: null,
uploadTemplate: function (o) {
var rows = $();
$.each(o.files, function (index, file) {
var row = $('<tr class="template-upload fade">' +
'<td><span class="preview"></span></td>' +
'<td><p class="name"></p>' +
'<div class="error"></div>' +
'</td>' +
'<td><p class="size"></p>' +
'<div class="progress"></div>' +
'</td>' +
'<td>' +
(!index && !o.options.autoUpload ?
'<button class="start" disabled>Start</button>' : '') +
(!index ? '<button class="cancel">Cancel</button>' : '') +
'</td>' +
'</tr>');
row.find('.name').text(file.name);
row.find('.size').text(o.formatFileSize(file.size));
if (file.error) {
row.find('.error').text(file.error);
}
rows = rows.add(row);
});
return rows;
},
downloadTemplate: function (o) {
var rows = $();
$.each(o.files, function (index, file) {
var row = $('<tr class="template-download fade">' +
'<td><span class="preview"></span></td>' +
'<td><p class="name"></p>' +
(file.error ? '<div class="error"></div>' : '') +
'</td>' +
'<td><span class="size"></span></td>' +
'<td><button class="delete">Delete</button></td>' +
'</tr>');
row.find('.size').text(o.formatFileSize(file.size));
if (file.error) {
row.find('.name').text(file.name);
row.find('.error').text(file.error);
} else {
row.find('.name').append($('<a></a>').text(file.name));
if (file.thumbnailUrl) {
row.find('.preview').append(
$('<a></a>').append(
$('<img>').prop('src', file.thumbnailUrl)
)
);
}
row.find('a')
.attr('data-gallery', '')
.prop('href', file.url);
row.find('button.delete')
.attr('data-type', file.delete_type)
.attr('data-url', file.delete_url);
}
rows = rows.add(row);
});
return rows;
},
always:function (e, data) {
$.each( function () {
$(this).removeClass('fileupload-processing');
});
},
done: function (e, data) {
$('.template-upload').remove();
$.each(data.files, function (index, file) {
openFolder(FolderId);
});
},
error: function (jqXHR, textStatus, errorThrown) {
alert("jqXHR: " + jqXHR.status + "\ntextStatus: " + textStatus + "\nerrorThrown: " + errorThrown);
}
/*add: function (e, data) {
$('body').append('<p class="upl">Uploading...</p>')
data.submit();
},*/
})
}
});