Valid HTML5 tag and attribute

Question

I would like to know if this code is allowed?

<article intro> .... </article>

I would like to use this if this is valid as attribute/elements of HTML5. If possible, i wanted to use this to simplify my HTML / CSS connection. Instead of using class="intro" will use [intro].

Yes sir, however i saw one time a site that uses this kind of element. But after i check it to validator. "Attribute intro not allowed on element article at this point". — iMarkDesigns
– iMarkDesigns, Commented Aug 24, 2013 at 7:57
Ok thank you Mr. Alien got your point. Btw, this custom attributes makes me confused. Let say, instead of using class="intro" for my CSS, I'll use intro to make it look like [intro] than to this .intro. But referring to my comment, it is not valid as it is for HTML5. As @nisarg statement link "Custom tags are not valid in HTML5. But currently browsers are supporting to parse them and also you can use them using css." Thank You for your time. — iMarkDesigns
– iMarkDesigns, Commented Aug 24, 2013 at 8:23
Wait wait, what you are trying here, where did class came here? — Mr. Alien
– Mr. Alien, Commented Aug 24, 2013 at 8:25
Nah, don't do that, instead follow the default approach, the way you are doing is wrong — Mr. Alien
– Mr. Alien, Commented Aug 24, 2013 at 8:33

Divya Bhaloidiya · Accepted Answer · 2013-08-24 08:07:16Z

1

Use following validating tool for HTML 5 :

http://html5.validator.nu/

http://validator.w3.org/

Use this code :

<article data-intro> .... </article>

edited Aug 24, 2013 at 8:07

answered Aug 24, 2013 at 7:54

Divya Bhaloidiya

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5 Comments

JJJ Over a year ago

This doesn't answer the question.

Divya Bhaloidiya Over a year ago

Then what is the answer for checking the validate HTML?

Divya Bhaloidiya Over a year ago

Here he can check "HTML is valid or not".

Divya Bhaloidiya Over a year ago

Here he can get answer with suggestion and even also with solution. I think its better way to check validate HTML.

Divya Bhaloidiya Over a year ago

See the above comment i.e :" Yes sir, however i saw one time a site that uses this kind of element. But after i check it to validator. "Attribute intro not allowed on element article at this point". – user852916"

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