Why does this html table definition not validate?_问答_开发者

Why does this html table definition not validate?

开发者 https://www.devze.com 2023-01-28 09:49 出处：网络

I\'m getting this W3C HTML validation error: 开发者_如何转开发end tag for \"table\" which is not finished

I'm getting this W3C HTML validation error:

end tag for "table" which is not finished

for this code:

<table id="myTable">
</table>

This is my DOCTYPE:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

I thought that table definition was perfectly fine!?

If you look at the XHTML 1.0 Strict DTD, it specifies that a table requires at least one of TR OR TBODY:

<!ELEMENT table
     (caption?, (col*|colgroup*), thead?, tfoot?, (tbody+|tr+))>
<!ELEMENT caption  %Inline;>
<!ELEMENT thead    (tr)+>
<!ELEMENT tfoot    (tr)+>
<!ELEMENT tbody    (tr)+>
<!ELEMENT colgroup (col)*>
<!ELEMENT col      EMPTY>
<!ELEMENT tr       (th|td)+>
<!ELEMENT th       %Flow;>
<!ELEMENT td       %Flow;>

The TR, in its turn, requires at least one of TH or TD.

The + sign after an element name means it should appear at least once.

I believe there should be a tr and td tags inside a table to validate. It's the same when you close a head tag without including a title tag

A XHTML 1.0 table is required to have at least a tbody or a tr child. See the DTD, specifically the table element:

<!ELEMENT table
     (caption?, (col*|colgroup*), thead?, tfoot?, (tbody+|tr+))>

Note the last part.

Take a look at http://validator.w3.org/docs/errors.html

73: end tag for X which is not finished

Most likely, you nested tags and closed them in the wrong order. For example .  is not acceptable, as  must be closed before . Acceptable nesting is:

<p><em>...</em></p>

Another possibility is that you used an element which requires a child element that you did not include. Hence the parent element is "not finished", not complete. For instance, in HTML the element must contain a child element, lists require appropriate list items (<ul> and <ol> require <li>; <dl> requires <dt> and <dd>), and so on.

You need at least one <tr> inside your table.