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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.
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| 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 |
From checking the living HTML spec
where did you find a list?
or did you have to scan the documentation for each tag?
https://html.spec.whatwg.org/multipage/semantics.html#semantics
edit:
answering my own question:
https://html.spec.whatwg.org/#attributes-3
@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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From checking the living HTML spec, HTML currently has 25 Boolean attributes.
From the list above,
contenteditableis not one of them (enumerated);frameborder,scoped, andtypemustmatchare not part of the HTML standard.