Sending files from a client's computer to a server is a procedure known as file upload.
An encoding type used to convey data from client to the server is known as "multipart/form-data" in the contexts of jQuery, AJAX, & file upload.
It is frequently applied when completing forms that have files attached. A multi-part message containing the file is sent from the client to the server when a file is uploaded using AJAX.
This message is divided into several pieces, each of which includes a separate piece of information, including the file itself as well as any additional form fields.
With jQuery, you may manage file uploads by using the $.ajax() function & setting the "contentType" attribute of the "options" object to "multipart/form-data."
This instructs the server to handle the data appropriately and prepare for a multi-part message.
A common feature of dynamic web applications is file upload functionality.
PHP file uploads typically involve submitting a form and refreshing the page.
However, you can upload files without refreshing the page by using jQuery and Ajax if you want to offer a better user interface.
In the previous tutorial, we looked at a simple way to upload files in PHP using jQuery and Ajax.
This tutorial uses jQuery, Ajax, and PHP to demonstrate the simplest method for uploading files or images along with form data.
The FormData object assembles a collection of key/value pairs for transmission via XMLHttpRequest.
FormData is essentially used in the same way as the submit() method to send form data via an Ajax request.
Including a file input element inside the HTML form allows you to send the files using FormData as well.
Step By Step Guide On jQuery Ajax File Upload Multipart/Form-Data :-
<html> <title>jQuery Ajax Form Submit with Form Data Example</title> <body> <h1>TalkersCode jQuery Ajax Form Submit with FormData Example</h1> <form method="POST" enctype="multipart/form-data" id="myform"> <input type="text" name="title"/><br/><br/> <input type="file" name="files"/><br/><br/> <input type="submit" value="Submit" id="btnSubmit"/> </form> <h1>jQuery Ajax Post Form Result</h1> <span id="output"></span> <script src="https://code.jquery.com/jquery-3.4.1.min.js"></script> </body> </html>
- Our first step is to write <HTML>, which tells the browser what version of HTML we're using. HTML documents contain tags as their first element.
- The project's heading must be described using the <head> tag. Titles and final brackets differ from final brackets because they are both open, rather than closed.
- After closing the title, the head is closed as well.
- The <body> tag follows, which describes the content of the webpage.
- Then we create a form using input type text.
- Then we create a submit button.
- Then we close form using </form>
- Then we close the script.
- Our program was then closed using </body></html>
File uploads were once difficult for developers to implement. Fortunately, file uploads have advanced alongside web standards.
Since AJAX (XMLHttpRequests) is now widely supported by browsers, file uploads can be safely handled by using it.
Also better,the new FormData interface makes it simple to get all of the form's keys and values in a matter of lines.
I hope this article on jQuery ajax file upload multipart/form-data helps you and the steps and method mentioned above are easy to follow and implement.