The FormData object allows pages to programmatically construct a list of key/value entries that can be submitted via XHR just like an HTML form. Previously, the object was write-only via a single append() method. The spec was fleshed out to add has(), get(), getAll(), delete(), set(), entries(), keys(), values(), forEach() and Symbol.iterator() methods to allow inspection, iteration and modification.

Demo

• https://googlechrome.github.io/samples/formdata-methods/index.html

Documentation

• https://developer.mozilla.org/en-US/docs/Web/API/FormData
• https://developers.google.com/web/updates/2016/03/formdata-methods-for-inspection-and-modification

Specification

Specification link

Status: Specification currently under development in a Working Group

Status in Chromium

Blink components: Blink

Implementation status: Enabled by default (tracking bug)

Consensus & Standardization

• Firefox: Shipped/Shipping
• Safari: No signal
• Web Developers: Strongly positive

Owner

• jsbell@chromium.com

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Last updated on 2020-11-09