[🐛 Bug]: `element.get_dom_attribute("checked")` for a checked checkbox element is not returning True

[mdmintz]

What happened?

element.get_dom_attribute("checked") for a checked checkbox element is not returning True

In 4.27.0, element.get_attribute() was deprecated in favor of element.get_dom_attribute(). However, the new method does not get the correct results, as in the following example where I was determining whether or not a checkbox was checked:

(Pdb+) element.tag_name
'input'
(Pdb+) attribute
'checked'
(Pdb+) element.get_attribute(attribute)
'true'
(Pdb+) element.get_dom_attribute(attribute)
(Pdb+) element.get_dom_attribute(attribute)
(Pdb+)

How can we reproduce the issue?

Call `element.get_dom_attribute(attribute)` for an `input` element of `type="checkbox"`, where the checkbox is checked.

There's no output.

The deprecated method, `element.get_attribute(attribute)`, correctly returns `true`.

Relevant log output

(Pdb+) element.tag_name
'input'
(Pdb+) attribute
'checked'
(Pdb+) element.get_attribute(attribute)
'true'
(Pdb+) element.get_dom_attribute(attribute)
(Pdb+) element.get_dom_attribute(attribute)
(Pdb+)

Operating System

Any

Selenium version

Python - 4.27.0

What are the browser(s) and version(s) where you see this issue?

Chrome

What are the browser driver(s) and version(s) where you see this issue?

Latest

Are you using Selenium Grid?

No

[github-actions]

@mdmintz, thank you for creating this issue. We will troubleshoot it as soon as we can.

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Thank you!

[mdmintz]

[AutomatedTester]

Can I see the exact HTML for this? What happens when you do this in other browsers?

…

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[joerg1985]

To read the checked state getDomProperty should be used. Some words on why i think this depreation is something good:

• the implementation did not return false in case the element was not checkable at all, so you might check the wrong element and do not realize it
• on page javascript could lead to incorrect results, in case someone did set a property named like the attribute
• the behavoiur was inconsistent, e.g. reading the src of an img returned null if not defined, lowsrc did return an empty string
• the implementation did things not documented, e.g. for the spellcheck attribute and ignored the element does support spellcheck at all
• the javascript is multiple kb big, so people complained about the slowness

and these are only the points i can recall, without even beeing in the discussion at the tlc meeting.

[AutomatedTester]

What @jimevans said is oversimplified (his words). Most of the times attributes and properties are mirrored so won't matter.

[mdmintz]

It's still being used in Selenium 4.27.0:

selenium/py/selenium/webdriver/support/select.py

Line 97 in b501589

if opt.get_attribute("index") == match:

selenium/py/selenium/webdriver/support/select.py

Line 185 in b501589

if opt.get_attribute("index") == str(index):

Select(element).select_by_index(option)

...python3.13/site-packages/selenium/webdriver/support/select.py:97: DeprecationWarning: using WebElement.get_attribute() has been deprecated. Please use get_dom_attribute() instead. if opt.get_attribute("index") == match:

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So either the deprecation must be removed, or all instances of get_attribute() in Selenium must be replaced.

[mdmintz]

Lots of places where get_attribute() can still be found being used in selenium 4.27.0:
https://github.com/search?q=repo%3ASeleniumHQ%2Fselenium%20get_attribute&type=code

Perhaps removing the deprecation is the best option for the time being.

[Delta456]

We can also update the instances of get_attribute() in Selenium as the release is already done.

[diemol]

We are going to revert this. Thanks, @VietND96, for creating the PR.

For 4.28, we will put back the deprecation code AND replace all the usages of get_attribute() to avoid the warnings.

[diemol]

https://pypi.org/project/selenium/4.27.1/

[diemol]

Thank you, @VietND96!