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how to send form data in ajax with multiple files without refreshing?

in my form code there is text input, checkbox input, file input type...etc,
everything working fine except the file input it's only taking one value ( multiple files upload isn't sending through ajax call ) how can i send arrays inside the serialize() function ?
Code :
<form action="#" id="postAdd" enctype="multipart/form-data">
<input accept=".png,.jpg,.jpeg" type="file" class="form-control-file d-none" id="file-upload" name="file[]" multiple required>
<input autocomplete="off" type="text" class="form-control bg-white" name="discName[]">
<button id="postAdbtn" class="btn btn-primary d-block mt-2">Submit</button>
</form> $(document).ready(function() {
$('#postAdbtn').click(function() {
var form = $('#postAdd').serialize();
$.ajax({
url: 'add-product-done.php',
method: "POST",
data: {
form: form
},
success: function(data) {
$('.fetchData').html(data);
}
})
});
});
one more thing, how can i get the files in PHP ?
and thanks

Can you try something like this?
var form = new FormData($("postAdd"));
$.ajax({
url: 'add-product-done.php',
data: form,
contentType: "multipart/form-data",
type: 'POST',
success: function(data){
console.log(data);
},
error: function(err){
console.error(err);
}
});

Why Ajax is sending object in Response?

I have a very simple script in php that is supose to send a request to ajax and return the string im putting in the .php file but when the request respond, it sends an object instead of the string. I dont know why this is hapening because i already have done this the same way previusly and works fine.
this is the form that send the request
<form method="POST" id="personForm">
<div class="form-group col-md-6">
<label for="NameInput">Name</label>
<input type="text" name="name" class="form-control" id="NameInput">
</div>
<div class="form-group col-md-6">
<label for="lNameInput">Last Name</label>
<input type="text" name="lastname" class="form-control" id="lNameInput">
</div>
<input type="button" name="Send" class="btn btn-info" onclick="ajaxRequest($('#NameInput').val(), $('#lNameInput').val())" value="Send">
</form>
<hr>
<div id="result">
</div>
This is the script that send the ajax request
function ajaxRequest(name, lastn) {
var params = {
"name" : name,
"lastn" : lastn
};
$.ajax({
url: './process/resquestAjax.php',
method: 'POST',
data: params,
beforeSend: function() {
$('#result').html('<p>Procesando Peticion...</p>');
},
complete: function(completeResult) {
$('#result').html(completeResult);
},
sucess: function(successResult) {
},
error: function(jqXHR,estado,error){
alert('There was an error!: '+estado+' name-> '+error+' otro-> '+jqXHR);
alert("Please contact support ias soon as posible...!");
}
}); // End Ajax Call
}
and the php file is just this
$nombre = $_POST['name'];
$apellido = $_POST['lastname'];
echo "¡Hello! your name is : ". $nombre ." and your last name: ". $apellido;
I dont know why im not getting the string of that echo in the response of the ajax. it sends an object instead. I'm trying to make other project with database with this but i have the same issue.

See the documentation. You're using the complete callback, which receives the jqXHR object as its first argument.
Instead, you want to use the success (two cs, note), not complete, if you want to use the returned data. success receives the data as its first argument. (You can also use complete to remove the in-progress message, etc.)
So for instance:
function ajaxRequest(name, lastn) {
var params = {
"name" : name,
"lastn" : lastn
};
$.ajax({
url: './process/resquestAjax.php',
method: 'POST',
data: params,
beforeSend: function() {
$('#result').html('<p>Procesando Peticion...</p>');
},
complete: function(completeResult) {
// If you wanted to do something whether the request
// succeeded or failed, you'd do it here. Otherwise,
// remove this handler.
},
success: function(successResult) {
$('#result').html(successResult);
},
error: function(jqXHR,estado,error){
alert('There was an error!: '+estado+' name-> '+error+' otro-> '+jqXHR);
alert("Please contact support ias soon as posible...!");
}
}); // End Ajax Call
}

Laravel csrf token mismatch on ajax post a second time

im trying to submit an ajax post in laravel but im having some problem regarding the form's csrf token. In my form, if the conditions i set in my ajax post url has been met the first time the form has been submitted. However if i submit the form and purposely failed the conditions i set in my ajax post url in the first try, If i submit the form again i get a token mismatch exception in my ajax error log. Do i need to refresh the csrf_token every ajax post?
Below is my code
JS
$(document).on('submit','.registration-form',function(e){
e.preventDefault();
var form = $(this);
var form_url = $(this).attr("action");
var form_values = $(this).serialize();
$.ajax({
url:form_url,
type:'POST',
data:form_values,
dataType: 'json',
async:false,
success: function(result){
console.log(result);
if(result['status']==true){
location.href = result['redirect'];
}
else{
form.find(".form-details").show().html(result['message']);
}
},
error: function(ts) {
console.log(ts.responseText)
}
});
});
HTML
<form action="{{ url('login') }}" method="POST" class="registration-form">
{{ csrf_field() }}
<input type="text" name="username" class="input" placeholder="Email">
<input type="password" name="password" class="input" placeholder="Password">
<button class="button is-redbox is-flat is-fullwidth">Login</button>
</form>

Are u sure that each time that is send in ajax?
data: {
"_token": "{{ csrf_token() }}",
}

$("#cform")[0].reset();
or in plain javascript:
document.getElementById("cform").reset();

public function regenerateToken(){
session()->regenerate();
return response()->json([
'msg'=>'success',
'token'=>csrf_token()
]);
}
$('#form').submit(funtion(event) {
event.preventDefault(event);
// Submit the form using AJAX.
$.ajax({
type: 'POST',
url: form.attr('action'),
data: formData
})
.done(function(response) {
// Make sure that the formMessages div has the 'success' class.
if (response.msg === 'success') {
$('#token').val(response.token);
console.log($('#token').val());
}
}
$('input[type="text"],input[type="email"] ,textarea, select').val(''); $(this).trigger('reset');
});

Parse json data with JS being received from php

My form:
<form class="form-inline signup" action="php/signupForm.php" role="form" id="signupForm">
<div class="form-group">
<input type="email" name="email" class="form-control" placeholder="Email address">
</div>
<div class="form-group">
<button type="submit" class="btn btn-theme ladda-button" data-style="expand-left">
<span class="ladda-label" id="notice">Get notified!</span>
</button>
</div>
</form>
the end of my php script
$response = array(
"status" => $status,
"message" => $message
);
echo json_encode($response);
My page is receiving data like:
{"status":0,"message":"This email is already on list!"}
using JS I need to parse that data and then update text within an element.
<span id="notice">Get notified!</span>
here's my script which doesn't work, after senging form data to my php script I get a white screen that shows the json strong
$(document).ready(function() {
$.ajax({
dataType: 'json',
$('#notice').text(data.message);
});
});

You have to handle the response in a callback.
$(document).ready(function() {
$('form').on('submit', function(e) {
e.preventDefault();
$.ajax({
data: $(this).serialize(),
url: $(this).attr('action'), // Or the path of the PHP file
dataType: 'json',
}).done(function(response) {
$('#notice').text(response.message);
});
});
});
See the related docs here

That ajax call is not well formed, missing success callback and url e.g:
$(document).ready(function () {
$.ajax({
url: '/the/url/where/your/data/comes/from/',
dataType: 'json',
success: function (data) {
$('#notice').text(data.message);
}
});
});

Your code as is, is just executing at page load and not on submission of a form. You need to attach an onsubmit event, prevent the default action of doing the form submit and do your ajax call in there. Also your ajax call itself was malformed
$("#yourFormID").submit(function(e){
e.preventDefault();
$.ajax({
url:"/urlToServerScript",
data:{} //any form data the script needs you should be put here,
dataType:"json" //type of response the server will output
}).then(function(data){
$('#notice').text(data.message);
});
});

JQuery ajax call fails when last input is filled

JQuery noob here,
I'm working on a simple web-app which needs to send registration info to a server.
For some reason this code works fine when only two of the form inputs are filled in, but fails when there's information in the last one, even though I'm not using it in the code. The error callback gets called, but errorThrown is empty. My server receives no data.
Is there anything obviously wrong with this?
Note: the call fails when the last input is filled, no matter how many inputs are in the form.
JQuery:
$(document).ready(function() {
$("#registrationForm button.register").on("click", function(event) {
var params = {
email: $("#registrationForm input.email").val(),
password: $("#registrationForm input.password").val()
};
$.ajax({
url: "/register",
type: "POST",
contentType: "application/json",
data: JSON.stringify(params),
dataType: "json",
success: function(data, textStatus, jqXHR) {
console.log(data);
if(data.user_exists==true)
{
alert("Stop trying to register twice!");
}else{
window.location.href = "/registered";
}
},
error: function(jqXHR, textStatus, errorThrown) {
console.error("Error:", errorThrown);
}
});
});
});
And the HTML:
<form id="registrationForm">
<label>Email:</label>
<input name="user[email]" type="text" required="required" class="email">
<br>
<label>Password:</label>
<input name="user[password]" type="password" required="required" class="password">
<br>
<label>Verify Password:</label>
<input name="nothing" type="text" required="required">
<br>
<button onclick="" class="btn btn-default register">Register</button>
</form>

Unless you specify otherwise, the button inside your form will submit the form when clicked. In the click function, put event.preventDefault() to stop this default action from taking place. For more details, see the jQuery docs here.