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@ArjanSchouten
Last active May 7, 2021 12:14
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Below is a list of html boolean attributes. All these attributes must be leaved empty, filed with 0|1, filled with on|off, filled with true|false or used as a flag.
async
autocomplete
autofocus
autoplay
border
challenge
checked
compact
contenteditable
controls
default
defer
disabled
formNoValidate
frameborder
hidden
indeterminate
ismap
loop
multiple
muted
nohref
noresize
noshade
novalidate
nowrap
open
readonly
required
reversed
scoped
scrolling
seamless
selected
sortable
spellcheck
translate
@j9t
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j9t commented Apr 29, 2020

@bkdotcom, I’ve been preparing an overview for Boolean attributes, too, and had for that gone through https://html.spec.whatwg.org/, at some point looking for is a boolean. That search seems to lead to all attributes.

PS.
Aforementioned overview is now available at The 25 Boolean Attributes of HTML.

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