How to fix w3.org validation error: There is no attribute “sid” or, Element “iframe” undefined?

StackOverflow https://stackoverflow.com/questions/11055672

  •  14-06-2021
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Question

i am trying to validate someone else's code here and they are using the xhtml1-strict DOCTYPE.

i am almost there; except for few erors...

  • There is no attribute "sid"
  • Element "iframe" undefined

For the SID attribute issue, this is what they have:

    <li class="drop" sid="nav_products"> <span class="head">Our Products</span>
    <ul id="nav_products" style="display: none;">

      <li><a href="/products/itemNumOne.php">Toys</a></li>

      <li><a href="/products/itemNumTwo.php">Tools</a></li>

      <li><a href="/products/itemNumThree.php">Beauty</a></li>

      <li><a href="/products/itemNumFour.php">Electronics</a></li>

    </ul>
    </li>

And because of the IFRAME error, i am also getting 2 more errors:

  • there is no attribute "src"

  • there is no attribute "style"

    <h2>Read The Latest News</h2>
<iframe src="http://p.p0.com/YesConnect/HtmlMessagePreview?a=TiTnp" style="width:100%; height:4350px; border-collapse:collapse; border:1px solid #ccc; padding:10px 0 0"></iframe>

Can anyone PLEASE help me fix these errors? I am not an expert in this area, so you will have to explain a bit the solutions. Thanks a lot in advance for your time and help!!!

Was it helpful?

Solution

The question to ask is probably why the previous developer was using "sid" in the first place. As far as I know, attribute "sid" will never validate in any XHTML doctype, so it's a good idea to change it to "class" or "id", and then change the code that relies on "sid" accordingly.

OTHER TIPS

Okay, so I was googling for solutions and found this site that kind of answered my questions on iframe

So I ended up changing the DOCTYPE for that one page to "XHTML 1.0 Transitional" from "XHTML 1.0 Strict" and that fixed all 3 errors I was getting for using iframe. Hope this info helps someone :)

however, i am still stuck with the error for sid, any help will be greatly appreciated!

UPDATE: This answer is almost 6 yrs old, and looks like since then few things have changed :P As Davide Andrea had pointed out, the above link doesn't work anymore, some of you might find this answer helpful: https://stackoverflow.com/a/8265544/1081016

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