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LibWeb/HTML: Implement and use "optional value"

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Corresponds to f3444c23ff

Also import a test.
This commit is contained in:
Sam Atkins
2025-07-08 11:28:10 +01:00
committed by Tim Ledbetter
parent 22cc36eeaa
commit af17f38bbf
Notes: github-actions[bot] 2025-07-08 16:10:58 +00:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/LadybirdBrowser/ladybird/commit/af17f38bbf6
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5353
Reviewed-by: https://github.com/tcl3 ✅
9 changed files with 228 additions and 7 deletions
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8
Libraries/LibWeb/HTML/HTMLButtonElement.cpp
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@@ -119,9 +119,17 @@ bool HTMLButtonElement::is_submit_button() const
// https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:concept-fe-value
String HTMLButtonElement::value() const
{
// The element's value is the value of the element's value attribute, if there is one; otherwise the empty string.
return attribute(AttributeNames::value).value_or(String {});
}
// https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:concept-fe-optional-value
Optional<String> HTMLButtonElement::optional_value() const
{
// The element's optional value is the value of the element's value attribute, if there is one; otherwise null.
return attribute(AttributeNames::value);
}
bool HTMLButtonElement::has_activation_behavior() const
{
return true;