Implement setter for document.domain
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This PR implements the setter for `document.domain`.
It builds on #15438 and #15478, only the last commit is part of this PR.
It includes tests for similar-origin security checks.
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Also handle datetime content attribute when attribute is absent.
Rephrase terms used in the test: dateTime IDL property, datetime
attribute and datetime content attribute.
Remove failure expectations for time element.
Issue 13363 - Step 1.2 of compiling event handler
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Adds the conditional to test that scripting is enabled in `EventTarget#get_compiled_event_handler`, and return `None` early if not.
Adds tests for "scripting enabled" and "scripting disabled" cases.
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When compiling event handlers, check whether scripting is enabled
and early return None/null if not.
https://html.spec.whatwg.org/multipage/
webappapis.html#getting-the-current-value-of-the-event-handler
Issue 13363 - Fix spec for disabled scripting
The original spec for this PR was bad because it depended on the
DOM without scripting enabled to use Javascript to signal the test's
failure, so it could never fail.
Use an onerror handler on `window` where scripting is enabled, and
use an invalid string of JavaScript for the handler, to detect
whether or not the event handler is *really* being compiled or not.
Condense tests into a single HTML file
Yup, didn't even realize I could do that at the time.
Remove an unnecessary test
Implement HTMLDataElement#value
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Implement HTMLDataElement#value
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