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onpaste raises error


Andynic

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I am using the onpaste even in an <input> tag.

 

According to the W3 website, this is a valid tag. (http://www.w3schools.com/jsref/event_onpaste.asp)

 

Yet when I pass the html through the W3 html validator, I receive this error:

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Line 287, Column 26: there is no attribute "onpaste" onpaste="return false;"

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 <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.

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This is the <input> tag:

=================

<p>Uw e-mailadres herhalen</p> <p><input class="tekstopmaak" type="text" name="contactmailadresHerhalen" id="contactmailadresHerhalen" size="40" maxlength="50"onpaste="return false;"onblur="validateContactMailadresHeralen('contactMailadresHerhalen');" value="" /></p>

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This is the page's heading:

===================

<!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"><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />

===================

 

In spite of the error, it works as expected, but why does the validator produce the error on a W3 documented event?

 

Thanks for your help,

Andynic

 

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onpaste is not a standard event. W3Schools is not the W3C, they're two completely independent organizations.

 

Here's the MDN page about it: https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/onpaste

Non-standardThis feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

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