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Validation: attribute 'data-dojo-type' is not a valid attribute of element 'button'

ShaningYu

Got several warnings on <button ... > <div ... >, etc., such as:
attribute 'data-dojo-type' is not a valid attribute of element 'button'
attribute 'data-dojo-props' is not a valid attribute of element 'button'
attribute 'data-dojo-type' is not a valid attribute of element 'div'
attribute 'data-dojo-props' is not a valid attribute of element 'div'
How can those problems be handled? Thanks.

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Accepted answers

JonathanUihlein

Great!

Those errors should go away when you change the doctype of your webpage to the HTML5 standard:

<!DOCTYPE html>

All comments

ShaningYu

The errors were gone from the files in VS 2010. Not sure why. Thanks to Jon for his valuable response.

ShaningYu

Got 43 on my IE and 446 on my FireFox.

JonathanUihlein

Given that IE-8 scores a whopping 43 out of a possible 555 points on http://html5test.com/ maybe that's the problem right there?

Indeed.... I'm not sure those warnings will ever go away when viewing your web application in IE8.

evtguy

Given that IE-8 scores a whopping 43 out of a possible 555 points on http://html5test.com/ maybe that's the problem right there?

ShaningYu

Run in IE 8

JonathanUihlein

Interesting! What browser and what specific version are you using?

ShaningYu

Changed to

<!DOCTYPE html>

still shows not a valid attribute.

JonathanUihlein

Great!

Those errors should go away when you change the doctype of your webpage to the HTML5 standard:

<!DOCTYPE html>

ShaningYu

Ideally, I should use HTML5. I need investigate more. Thanks for you to remind me. I have turned he Q as not answered.

JonathanUihlein

I believe 'data-*' is a valid property on HTML5 elements.

Is your webpage in HTML5?

* * *

Read more here about Dojo-specific data props:
http://www.sitepen.com/blog/2012/01/19/html5-data-dojo-attribute-support/

Read more about HTML5 data props:
http://ejohn.org/blog/html-5-data-attributes/

*edit

You posted while I was posting; my suspicion was correct 😃

Is there any reason you aren't using HTML5?

ShaningYu

Referring the thread at http://forums.arcgis.com/threads/12911-Warnings-why, I did
<%--<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">--%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
Namely, change to 4.01. The warning messages were gone. Thanks.

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