[Invalid] Markup Validation of https://webapps.jyu.fi/moodle/ - W3C Markup Validator
Markup Validation Service
Check the markup (HTML, XHTML, …) of Web documents
Error found while checking this document as XHTML 1.0 Strict!
| Result: | 1 Error | |
|---|---|---|
| Address: | ||
| Modified: | (undefined) | |
| Server: | Apache/2.2.3 (Red Hat) | |
| Size: | (undefined) | |
| Content-Type: | text/html | |
| Encoding: | utf-8 | (detect automatically) utf-8 (Unicode, worldwide) utf-16 (Unicode, worldwide) iso-8859-1 (Western Europe) iso-8859-2 (Central Europe) iso-8859-3 (Southern Europe) iso-8859-4 (North European) iso-8859-5 (Cyrillic) iso-8859-6-i (Arabic) iso-8859-7 (Greek) iso-8859-8 (Hebrew, visual) iso-8859-8-i (Hebrew, logical) iso-8859-9 (Turkish) iso-8859-10 (Latin 6) iso-8859-11 (Latin/Thai) iso-8859-13 (Latin 7, Baltic Rim) iso-8859-14 (Latin 8, Celtic) iso-8859-15 (Latin 9) iso-8859-16 (Latin 10) us-ascii (basic English) euc-jp (Japanese, Unix) shift_jis (Japanese, Win/Mac) iso-2022-jp (Japanese, email) euc-kr (Korean) gb2312 (Chinese, simplified) gb18030 (Chinese, simplified) big5 (Chinese, traditional) Big5-HKSCS (Chinese, Hong Kong) tis-620 (Thai) koi8-r (Russian) koi8-u (Ukrainian) iso-ir-111 (Cyrillic KOI-8) macintosh (MacRoman) windows-1250 (Central Europe) windows-1251 (Cyrillic) windows-1252 (Western Europe) windows-1253 (Greek) windows-1254 (Turkish) windows-1255 (Hebrew) windows-1256 (Arabic) windows-1257 (Baltic Rim) |
| Doctype: | XHTML 1.0 Strict | (detect automatically) HTML5 (experimental) XHTML 1.0 Strict XHTML 1.0 Transitional XHTML 1.0 Frameset HTML 4.01 Strict HTML 4.01 Transitional HTML 4.01 Frameset HTML 3.2 HTML 2.0 ISO/IEC 15445:2000 ("ISO HTML") XHTML 1.1 XHTML + RDFa XHTML Basic 1.0 XHTML Basic 1.1 XHTML Mobile Profile 1.2 XHTML-Print 1.0 XHTML 1.1 plus MathML 2.0 XHTML 1.1 plus MathML 2.0 plus SVG 1.1 MathML 2.0 SVG 1.0 SVG 1.1 SVG 1.1 Tiny SVG 1.1 Basic SMIL 1.0 SMIL 2.0 |
| Root Element: | html | |
| Root Namespace: | http://www.w3.org/1999/xhtml | |
| Show Source | Show Outline | List Messages Sequentially Group Error Messages by Type |
| Validate error pages | Verbose Output | Clean up Markup with HTML Tidy |
Help on the options is available.
Validation Output: 1 Error
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Line 183, Column 141:
Attribute "target" exists, but can not be used for this element.
…confluence-wiki-huoltokatko" target="_blank">https://www.jyu.fi/thk/ajankohtaYou 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 <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
