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Asked: 2026-05-27T14:28:33+00:00

I’d like to add custom attributes to the <div> tags in my HTML. Is

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I’d like to add custom attributes to the <div> tags in my HTML. Is there a way to append those variables to the Doctype description, or should I not even worry about it. I found a similar question on StackOverflow, but it addressed XHTML.

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  1. Editorial Team

    You can create your own DTD, but not sure how some browsers might react to it, so you will have to test.

    http://www.cs.tut.fi/~jkorpela/html/own-dtd.html

    edit: overall it depends on what you are doing. It’s best if you can avoid a modified dtd.

    .. I had to find it, but once I did something like this to get past validation (using propietary code, and couldn’t change much at the time, but wanted to get it as close to valid as possible)

    <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd" [
<!ATTLIST DIV
    something     CDATA        #IMPLIED
>
]>

    if there was something in the code like:

    <div something="nothing"></div>

    And I wasn’t allowed to change it.

    The problem is that you can’t leave it in the page, because it will probably print out the “]>”, but it works for defining an extra attribute for a validator.

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