Develop Reference

Uploading is stuck

$("#sendingForm").submit(
function ()
{
if (checkForm())
sendForm();
return false;
}
);
function sendForm ()
{
var formData = new FormData($("#sendingForm"));
$.ajax({
url: '/process.php',
method: 'post',
contentType: 'multipart/form-data',
data: formData,
success: function(response){
if (response!="0")
errorsDecode(response);
else
alrightMes();
alert(response);
}
});
}
I used to serialize form data, but then I had to add file uploading, so i use FormData class. but it doesn't work. I can't find out the reason. Help me please.

FormData won't unwrap a jQuery object representing the form element.
Try changing:
var formData = new FormData($("#sendingForm"));
To
var formData = new FormData($("#sendingForm")[0]);
You also need to prevent processing of the FormData object internally by $.ajax and browser will set the multi-part content type when a FormData object is used
$.ajax({
url: '/process.php',
method: 'post',
contentType: false,// browser will set multi-part when FormData used
processing: false,
data: formData,
success: function(response) {
if (response != "0")
errorsDecode(response);
else
alrightMes();
alert(response);
}
});

How to add PHP Session variable into FormData using AJAX?

I'd like to pass a PHP session variable (called 'profileid') using FormData and AJAX. I thought this below would work, it did not. Why?
var imageData = new FormData();
imageData.append('image', $('#uploadImage')[0].files[0]);
imageData.append('profileid', <?php echo $_SESSION['profileid'];?>);
//Make ajax call here:
$.ajax({
url: '/upload-image-results-ajax.php',
type: 'POST',
processData: false, // important
contentType: false, // important
data: imageData,
//leaving out the rest as it doesn't pertain

You could add the profileid in the $.ajax URL parameter instead of adding it in FormData:
$(document).ready(function (e) {
$('#uploadImageForm').on('submit',(function(e) {
e.preventDefault();
var formData = new FormData(this);
$.ajax({
url: "/upload-image-results-ajax.php?profileid=<?= $_SESSION['profileid']; ?>",
type: "POST",
data: formData,
cache: false,
contentType: false,
processData: false,
success: function(response){
console.log("success");
console.log(response);
},
error: function(response){
console.log("error");
console.log(response);
}
});
}));
$('#uploadImage').on("change", function() {
$("#uploadImageForm").submit();
});
});
Don't forget to place session_start(); at the beginning of your code.

Transmitting Form Data via Json

I believe I am making a very basic mistake somewhere.
I have a Form I want to transmit to a PHP page. I also want to send a parameter with that information so I have created a basic 2D array:
$fd['api'] -> contaning the parameter as a string
$fd['body'] -> containing the form data
I am struggling to transmit this array "$fd" as a json string and believe I am using the javascript syntax incorrectly somewhere as I do not often use Javascript.
Any Help would be appreciated.
function admin_statistics_form_send(){
var fd = []
fd['api'] = "refresh_all"
fd['body'] = new FormData(document.getElementById("admin_statistics_form"))
var jsonstring = fd
console.log(jsonstring)
$.ajax({
async: true,
beforeSend: function(){
},
url: "admin_statistics_api.php",
type: "POST",
data: jsonstring,
dataType: "json",
processData: false, // tell jQuery not to process the data
contentType: false, // tell jQuery not to set contentType
success: function (data) {
console.log(data)
},
error: function(data) {
console.log(data)
}
})
}

You only want to send the FormData object. To add other key/value pairs you append to that object:
function admin_statistics_form_send(){
var fd = new FormData($("#admin_statistics_form")[0]);
fd.append('api',"refresh_all");
$.ajax({
//async: true, // redundant since it is default and should never use `false`
beforeSend: function(){
},
url: "admin_statistics_api.php",
type: "POST",
data: fd,
dataType: "json",
processData: false, // tell jQuery not to process the data
contentType: false, // tell jQuery not to set contentType
success: function (data) {
console.log(data)
},
error: function(data) {
console.log(data)
}
})
}

Ajax send array and Image in same request

I want to make an ajax call that sends both JSON and file data to my PHP backend. This is my ajax call currently:
$.ajax({
type: 'POST',
dataType: 'json',
data: jsonData,
url: 'xxx.php',
cache: false,
success: function(data) {
//removed for example
}
});
The data(jsonData) is a JSON array that also holds the input from a file select as well(I am assuming this is wrong due to the type mismatch). I tried using contentType: false, and processData: false, but when I try to access $_POST data in PHP there is nothing there. The data I am passing does not come from a form and there is quite a bit of it so I do not want to use FormData and append it to that object. I am hoping i will not have to make two ajax calls to accomplish this.

If you want to send data along with any file than you can use FormData object.
Send your jsonData as like that:
var jsonData = new FormData(document.getElementById("yourFormID"));
Than in PHP, you can check your data and file as:
<?php
print_r($_POST); // will return all data
print_r($_FILES); // will return your file
?>

Try Using formdata instead of normal serialized json
Here's an example:
var formData = new FormData();
formData.append("KEY", "VALUE");
formData.append("file", document.getElementById("fileinputID").files[0]);
then in your ajax
$.ajax({
type: 'POST',
url: "YOUR URL",
data: formData,
contentType: false,
processData: false,
dataType: 'json',
success: function (response) {
CallBack(response, ExtraData);
},
error: function () {
alert("Error Posting Data");
}
});

You can try like this also
You can visit this answer also
https://stackoverflow.com/a/35086265/2798643
HTML
<input id="fuDocument" type="file" accept="image/*" multiple="multiple" />
JS
var fd = new FormData();
var files = $("#fuDocument").get(0).files; // this is my file input in which We can select multiple files.
fd.append("kay", "value"); //As the same way you can append more fields
for (var i = 0; i < files.length; i++) {
fd.append("UploadedImage" + i, files[i]);
}
$.ajax({
type: "POST",
url: 'Url',
contentType: false,
processData: false,
data: fd,
success: function (e) {
alert("success");
}
})

how to pass a additional data with form serialized data on ajax?

How to pass an additional data with form serialize data on ajax post method?.
below is my code which was using for ajax post,
$(document).ready(function()
{
var additional_data=$("#extra_data").val();
$.ajax({
type: 'POST',
url: 'send_mail.php',
data: frm.serialize(),
success: function (data) {
alert(data);
}
});
});
here, how to pass a additional_data with serialize form data

From jQuery API DOCS
The .serializeArray() method creates a JavaScript array of objects
The .serialize() method creates a text string in standard URL-encoded notation.
I think to use push , we need to use serializeArray
try to use
var frmData = frm.serializeArray();
frmData.push({name: "name", value: "test"});
$(document).ready(function()
{
var additional_data=$("#extra_data").val();
$.ajax({
type: 'POST',
url: 'send_mail.php',
data: frmData,
success: function (data) {
alert(data);
}
});
});

You need to push the elements to the existing serialized data.
var frmData = frm.serialize();
frmData.push({name: nameofthevariable, value: valueofthevariable});
frmData.push({name: nameofthevariable2, value: valueofthevariable2});
frmData.push({name: nameofthevariable3, value: valueofthevariable3});
$(document).ready(function()
{
var additional_data=$("#extra_data").val();
$.ajax({
type: 'POST',
url: 'send_mail.php',
data: frmData,
success: function (data) {
alert(data);
}
});
});

serialize() create a query string of the form. So you can append additional parameters into it.
$(document).ready(function()
{
var additional_data=$("#extra_data").val();
$.ajax({
type: 'POST',
url: 'send_mail.php',
data: frm.serialize()+'&param1='+value1+'&param2='+value2,
success: function (data) {
alert(data);
}
});
});

serializearray() can be used to send additional parameters. PFB code for sending additional parameters.
var request = $('form').serializeArray();
request.push({name: "kindOf", value: "save"});
Ajax call
$.ajax({
url: "/ST/SubmitRequest",
dataType: "json",
//contentType: "application/json",
type: "POST",
data: request,
//data: r1,
success: function (response) {
//Setinterval();
//alert("Done...!");
},
failure: function (response) {
alert(response.responseText);
},
error: function (response) {
alert(response.responseText);
}
});