Note: This feature is available in Web Workers.
The get() method of the FormData interface returns the first value associated with a given key from within a FormData object. If you expect multiple values and want all of them, use the getAll() method instead.
get(name)nameA string representing the name of the key you want to retrieve.
A value whose key matches the specified name. Otherwise, null.
If we add two username values to a FormData using append():
formData.append("username", "Chris");
formData.append("username", "Bob");The following get() method will only return the first username value:
formData.get("username"); // Returns "Chris"