HTML5 valid custom tag/element -


how create valid custom tag/element in html5?

example 1:

<customtag attr1="val" attr2="val"> </customtag>

example 2:

<my:customtag attr1="val" attr2="val"> </my:customtag> <!-- attention colon separator -->

thanks.

using own made elements not valid html.

from w3c spec:

authors must not use elements, attributes, or attribute values not permitted specification or other applicable specifications, doing makes harder language extended in future.


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