Upload in Submit form AJAX

Question

I have a form where I send data through AJAX jQuery. However, I would also like to send a file. How do I add to my code?

var formData = {
    'titulo': $('input[name=titulo]').val(),
    'tipo'  : $('select[name=tipo]').val(),
    'dataa' : $('input[name=data]').val(),
    'desc'  : $('textarea[name=desc]').val()
};

// process the form
$.ajax({
    type        : 'POST',
    url         : 'processar.php',
    data        : formData,
    dataType    : 'json',
    encode      : true
})

Answer 1

You could try something like :

HTML

<h1>jQuery Ajax submit Multipart form</h1>

<form method="POST" enctype="multipart/form-data" id="fileUploadForm">
    <input type="text" name="extraField"/><br/><br/>
    <input type="file" name="files"/><br/><br/>
    <input type="file" name="files"/><br/><br/>
    <input type="submit" value="Submit" id="btnSubmit"/>
</form>

<h1>Ajax Post Result</h1>
<span id="result"></span>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>

</body>
</html>

JS

$(document).ready(function () {

    $("#btnSubmit").click(function (event) {

        //stop submit the form, we will post it manually.
        event.preventDefault();

        // Get form
        var form = $('#fileUploadForm')[0];

        // Create an FormData object
        var data = new FormData(form);

        // If you want to add an extra field for the FormData
        data.append("CustomField", "This is some extra data, testing");

        // disabled the submit button
        $("#btnSubmit").prop("disabled", true);

        $.ajax({
            type: "POST",
            enctype: 'multipart/form-data',
            url: "/api/upload/multi",
            data: data,
            processData: false,
            contentType: false,
            cache: false,
            timeout: 600000,
            success: function (data) {

                $("#result").text(data);
                console.log("SUCCESS : ", data);
                $("#btnSubmit").prop("disabled", false);

            },
            error: function (e) {

                $("#result").text(e.responseText);
                console.log("ERROR : ", e);
                $("#btnSubmit").prop("disabled", false);

            }
        });

    });

});

Source : https://www.mkyong.com/jquery/jquery-ajax-submit-a-multipart-form/

The secret here is to use new Formdata() to "retrieve form data" and set the parameter processData from the ajax request to FALSE.