HTML Concepts: Form Owners
Post from December 18, 2021, filed under Web Development.
Today in “HTML Concepts”: form owners. It’s not what you are when you put a form on a page.
What are form owners? In essence,
form elements that so-called form-associated elements are tied to.
Form-associated elements are the following:
img, as well as form-associated custom elements.
(These fall into certain categories, namely listed, submittable, resettable, and autocapitalize-inheriting elements.)
Form ownership is straightforward, as the connection of a form-associated element with a form owner is simple:
The element is associated with its nearest ancestor
form element—unless it is a form-associated listed element (anything not
img) and has a
form attribute that overrides this association. (One can construct scenarios in which neither is the case.)
In many cases one can say that each form element has a form owner, its parent
form element. (And you, if you own a web form, can still call yourself a form owner, too.)
I’m Jens Oliver Meiert, and I’m an engineering manager and author. I’ve worked as a technical lead for Google, I’m close to the W3C and the WHATWG, and I write and review books for O’Reilly. Other than that, I love trying things, sometimes including philosophy, art, and adventure. Here on meiert.com I share some of my views and experiences.
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Perhaps my most comprehensive book: The Web Development Glossary (2020). With explanations and definitions for literally thousands of terms from Web Development and related fields, building on Wikipedia as well as the MDN Web Docs. Available at Apple Books, Kobo, Google Play Books, and Leanpub.