No error when using ASCII upper alphas in Attribute Name for Custom Data Attributes #1704
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The violation in the spec applies to the parsed document in the DOM and not to any pre-parsed source markup. And the HTML checker operates on the parsed document in the DOM, not on the source markup. See more at #1668 (comment) To put that in other words: Your source markup represents instructions to the HTML parser — and this instruction: <p data-FOO="foo">…to an HTML parser means exactly the same thing at this instruction: <p data-foo="foo">And in both cases, what the HTML parser creates in the DOM is To clarify a bit further — to an HTML parser, this markup: <!DOCTYPE HTML>
<HTML LANG="en">
<HEAD>
<TITLE>Test</TITLE>
</HEAD>
<BODY>
<P DATA-FOO="FOO">correct??</P>
</BODY>
</HTML>…means exactly the same thing as this markup: <!DOCTYPE html>
<html lang="en">
<head>
<title>Test</title>
</head>
<body>
<p data-FOO="foo">correct??</p>
</body>
</html>And in fact to an HTML parser the following: <!DOCTYPE html>
<html lang=en>
<title>Test</title>
<p data-FOO=foo>correct??</p>… is also exactly the same thing as those above. |
URL being validated or code to reproduce error:
The following specifications would be violated.
If the interpretation is incorrect and is a normal validation, please close. 🫣
3.2.6.6 Embedding custom non-visible data with the data-* attributes
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