Formdata delete not working

1. How do I delete from FormData?
2. What is FormData () in JavaScript?
3. How get all values from FormData?
4. How do I know if FormData has a file?

How do I delete from FormData?

You can use formData. delete(name) to delete the entry of formData with "name" key.

What is FormData () in JavaScript?

The FormData interface provides a way to construct a set of key/value pairs representing form fields and their values, which can be sent using the fetch() or XMLHttpRequest. send() method. It uses the same format a form would use if the encoding type were set to "multipart/form-data" .

How get all values from FormData?

getAll() The getAll() method of the FormData interface returns all the values associated with a given key from within a FormData object. Note: This method is available in Web Workers.

How do I know if FormData has a file?

The has() method of the FormData interface returns whether a FormData object contains a certain key. Note: This method is available in Web Workers.