Skip to content

Avoid setting value for progress with nullish value #4492

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Sep 13, 2024
Merged

Avoid setting value for progress with nullish value #4492

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
7c0ee5e
Avoid setting value for progress with nullish value
JoviDeCroock Sep 12, 2024
54a1f24
Merge branch 'main' into fix-undefined-null-progress
JoviDeCroock Sep 13, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 3 additions & 1 deletion src/diff/index.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -531,7 +531,9 @@ function diffElementNodes(
// As above, don't diff props during hydration
if (!isHydrating) {
i = 'value';
if (
if (nodeType === 'progress' && inputValue == null) {
dom.removeAttribute('value');
} else if (
inputValue !== undefined &&
// #2756 For the <progress>-element the initial value is 0,
// despite the attribute not being present. When the attribute
Expand Down
14 changes: 14 additions & 0 deletions test/browser/render.test.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -919,6 +919,20 @@ describe('render()', () => {
expect(scratch.firstChild.getAttribute('value')).to.equal('0');
});

// #4487
it('should not set value for undefined/null on a progress element', () => {
render(<progress value={undefined} />, scratch);
expect(scratch.firstChild.getAttribute('value')).to.equal(null);
render(<progress value={null} />, scratch);
expect(scratch.firstChild.getAttribute('value')).to.equal(null);
render(<progress value={0} />, scratch);
expect(scratch.firstChild.getAttribute('value')).to.equal('0');
render(<progress value={50} />, scratch);
expect(scratch.firstChild.getAttribute('value')).to.equal('50');
render(<progress value={null} />, scratch);
expect(scratch.firstChild.getAttribute('value')).to.equal(null);
});

it('should always diff `checked` and `value` properties against the DOM', () => {
// See https://github.com/preactjs/preact/issues/1324

Expand Down