FormData class

The 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.send() method. It uses the same format a form would use if the encoding type were set to "multipart/form-data". You can also pass it directly to the URLSearchParams constructor if you want to generate query parameters in the way a <form> would do if it were using simple GET submission. An object implementing can directly be used in a for...of structure, instead of entries(): for (var p of myFormData) is equivalent to for (var p of myFormData.entries()).

Note: This feature is available in Web Workers.

Inheritance
Available extensions
Annotations
  • @JS()
  • @staticInterop

Constructors

FormData([HTMLFormElement? form])
factory

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

append(String name, [Blob? blobValue, String? filename]) → void

Available on FormData, provided by the PropsFormData extension

delete(String name) → void

Available on FormData, provided by the PropsFormData extension

get(String name) → dynamic

Available on FormData, provided by the PropsFormData extension

getAll(String name) → Iterable

Available on FormData, provided by the PropsFormData extension

has(String name) → bool

Available on FormData, provided by the PropsFormData extension

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
set(String name, [Blob? blobValue, String? filename]) → void

Available on FormData, provided by the PropsFormData extension

toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited