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I tried to validate my site and i get this following error
there is no attribute "property"
<meta property="og:title" content="Free Sms" />
there is no attribute "allowTransparency"
…w:hidden; width:450px; height:21px;" allowTransparency="true">Facebook</iframe>
there is no attribute "placeholder"
…"search" type="text" placeholder="SEARCH" value="" class="searchInp …
First my code has this and i get 13 errors.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
Changing the code to this reduce my error. but I get the 3 errors.Why? Any guide how to fix this?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:og="http://ogp.me/ns#"
xmlns:fb="https://www.facebook.com/2008/fbml"
xml:lang="en" lang="en">
Complete
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:og="http://ogp.me/ns#"
xmlns:fb="https://www.facebook.com/2008/fbml"
xml:lang="en" lang="en">
<head>
<title>Welcome to mysite</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<meta name="keywords" content="Social, Programming" />
<meta name="description" content="Share Ideas and become the best" />
<meta http-equiv="Content-Language" content="en" />
<meta name="robots" content="*" />
<meta name="document-type" content="text" />
<meta name="googlebot" content="NOODP" />
<meta name="slurp" content="NOYDIR" />
<meta name="msnbot" content="NOODP" />
<meta name="Generator" content="snippet" />
<meta property="og:title" content="Welcome to mysite" />
<meta property="og:type" content="website" />
<meta property="og:url" content="" />
<meta property="og:description" content="Share Ideas and become the best" />
<meta property="fb:app_id" content="" />
<meta property="og:image" content="http://mysite.com/images/fbicon.png" />
921
The attributes you mention are simply not part of XHTML 1.0 Transitional, so a validator has to report them as errors. Just remember that the concept of error is relative here: it means that the document does not conform to the document type definition it purports to comply with (by referring to a document type definition by the doctype declaration).
The property attribute is not part of HTML5 CR either, but validators like http://validator.nu use a “schema for HTML5 + SVG 1.1 + MathML 3.0 + RDFa Lite 1.1”, where the RDFa part allows property.
If your markup is a mix of XHTML 1.0 Transitional and HTML5, for example, just relax. The mix works in browsers and other relevant software, except for validators, which need to be picky. Just use a doctype that best corresponds to the markup you have, and manually check the error messages. If you get just 3 error messages when using XHTML 1.0 Transitional, keep using it, until you get fewer errors when checking against HTML5.
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