Question
I want to check the validation standard, on W3C Validation Engine (HTML, CSS) I got some error could you explain what that means exactly? Validation
I want to check the validation standard, on W3C Validation Engine (HTML, CSS)
I got some error
could you explain what that means exactly?
Validation Output: 16 Errors
end tag for X omitted, but OMITTAG NO was specified
You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
Line 7, column 28: end tag for "meta" omitted, but OMITTAG NO was specified
>
Line 8, column 76: end tag for "meta" omitted, but OMITTAG NO was specified
>
Line 78, column 97: end tag for "img" omitted, but OMITTAG NO was specified
"Images/homeimage.jpg" alt="student submitted image, transcription available below" height="400" width="400">
Line 83, column 113: end tag for "b" omitted, but OMITTAG NO was specified
l, and programming skills to thrive as an entry level software engineer.>
Line 83, column 113: end tag for "b" omitted, but OMITTAG NO was specified
l, and programming skills to thrive as an entry level software engineer.>
Line 92, column 11: end tag for "div" omitted, but OMITTAG NO was specified
>
Line 92, column 11: end tag for "div" omitted, but OMITTAG NO was specified
>
Line 94, column 12: end tag for "html" omitted, but OMITTAG NO was specified
>
Missing xmlns attribute for element X. The value should be: Y
Many Document Types based on XML need a mandatory xmlns attribute on the root element. For example, the root element for XHTML might look like:
Line 2, column 1: Missing xmlns attribute for element html. The value should be: http://www.w3.org/1999/xhtml
<html lang="en">
there is no attribute X
You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the
Line 7, column 20: there is no attribute "charset"
"UTF-8">
document type does not allow element X here
The element named above was found in a context where it is not allowed. This could mean that you have incorrectly nested elements -- such as a "style" element in the "body" section instead of inside "head" -- or two elements that overlap (which is not allowed).
One common cause for this error is the use of XHTML syntax in HTML documents. Due to HTML's rules of implicitly closed elements, this error can create cascading effects. For instance, using XHTML's "self-closing" tags for "meta" and "link" in the "head" section of a HTML document may cause the parser to infer the end of the "head" section and the beginning of the "body" section (where "link" and "meta" are not allowed; hence the reported error).
Line 3, column 43: document type does not allow element "html" here
>
end tag for element X which is not open
The Validator found an end tag for the above element, but that element is not currently open. This is often caused by a leftover end tag from an element that was removed during editing, or by an implicitly closed element (if you have an error related to an element being used where it is not allowed, this is almost certainly the case). In the latter case this error will disappear as soon as you fix the original problem.
If this error occurred in a script section of your document, you should probably read this FAQ entry.
Line 82, column 125: end tag for element "br" which is not open
t, and Data analysis want to Utilize broad educational background with>
Line 91, column 15: end tag for element "fieldset" which is not open
>
X not finished but document ended
Line 94, column 12: "html" not finished but document ended
>
required attribute X not specified
The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are type="text/css" for