How Can I Use jQuery to Handle File Uploads with AJAX?

File Upload with jQuery Serialization

When uploading a file using jQuery, the conventional serialization method may not work properly with input fields of type "file". To address this issue, we can utilize the FormData object.

FormData operates seamlessly with all types of form elements, including file inputs. It encapsulates all form data, including file content, into a single object. Here's how to implement it:

$(document).on("submit", "form", function (event) {
  event.preventDefault();
  $.ajax({
    url: $(this).attr("action"),
    type: $(this).attr("method"),
    dataType: "JSON",
    data: new FormData(this),
    processData: false,
    contentType: false,
    success: function (data, status) {
      // Handle successful response
    },
    error: function (xhr, desc, err) {
      // Handle error
    },
  });
});

This code enables you to submit form data, including file uploads, using AJAX. The FormData object takes care of serializing the file content for proper transmission.

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