The FormData interface provides a way to easily construct a set of key/value pairs representing form fields and their values, which can then be easily sent using the XMLHttpRequest. It uses the same format a form would use if the encoding type were set to “multipart/form-data” . …

What is form data in JS?

FormData objects are used to capture HTML form and submit it using fetch or another network method. We can either create new FormData(form) from an HTML form, or create an object without a form at all, and then append fields with methods: formData.

What is form data in HTTP request?

Form data is information provided by the user through interaction with an element in a HTML form, such as a text input box, button, or check box. The information is transmitted as a series of name and value pairs.