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LibWeb/HTML: Implement default value of range inputs

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Range inputs now always uses the default value if the value attribute
is not set and the input is not dirty.
This commit is contained in:
Glenn Skrzypczak
2025-08-10 22:45:24 +02:00
committed by Tim Flynn
parent aea8650d8b
commit a127f77602
Notes: github-actions[bot] 2025-08-14 15:06:56 +00:00 
Author: https://github.com/skyz1
Commit: https://github.com/LadybirdBrowser/ladybird/commit/a127f77602a
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5812
Reviewed-by: https://github.com/gmta
Reviewed-by: https://github.com/trflynn89
2 changed files with 5 additions and 4 deletions
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2
Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@@ -1728,6 +1728,8 @@ Utf16String HTMLInputElement::value_sanitization_algorithm(Utf16String const& va
// as a floating-point number, of the default value.
auto maybe_value = parse_floating_point_number(value);
if (!is_valid_floating_point_number(value) ||
// AD-HOC: Use the default value if the value has not been set.
(!m_dirty_value && !has_attribute(AttributeNames::value)) ||
// AD-HOC: The spec doesn't require these checks - but other engines do them.
!maybe_value.has_value() || !isfinite(maybe_value.value())) {
// The default value is the minimum plus half the difference between the minimum and the maximum, unless