AJAX File Upload with FormData
In the context of dynamic HTML, you've generated a file upload form via drag-and-drop and have JavaScript code for submitting the form using AJAX. However, to facilitate file upload using FormData, you need adjustments.
Preparations
To utilize FormData, choose one of the following:
- Supply the entire form for processing:
var form = $('form')[0];
var formData = new FormData(form);
- Specify exact data for FormData:
var formData = new FormData();
formData.append('section', 'general');
formData.append('action', 'previewImg');
// Attach file
formData.append('image', $('input[type=file]')[0].files[0]);
Sending the Form
Use the provided jQuery snippet:
$.ajax({
url: 'Your url here',
data: formData,
type: 'POST',
contentType: false,
processData: false,
// ... Other options like success and etc
});
This request will mimic a regular form submission with enctype="multipart/form-data", allowing you to upload files successfully.
Note: Remember to specify type: "POST" in the options, as file uploads require POST requests.
Update: Starting with jQuery 1.6, contentType: false is supported.
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