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fix: value/checked not correctly set using spread #15239

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Feb 11, 2025
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fix test form-default-value-spread
  • Loading branch information
adiguba committed Feb 7, 2025
commit 0531f279c50306462903379930e14b7ecd66b3c4
15 changes: 7 additions & 8 deletions packages/svelte/src/internal/client/dom/elements/attributes.js
Original file line number Diff line number Diff line change
Expand Up @@ -382,19 +382,18 @@ export function set_attributes(
if (name === 'value' || name === 'checked') {
// removing value/checked also removes defaultValue/defaultChecked — preserve
let input = /** @type {HTMLInputElement} */ (element);

const use_default = prev === undefined;
if (name === 'value') {
let prev = input.defaultValue;
let previous = input.defaultValue;
input.removeAttribute(name);
input.defaultValue = prev;
input.value = '';
input.defaultValue = previous;
// @ts-ignore
input.__value = null;
input.value = input.__value = use_default ? previous : null;
} else {
let prev = input.defaultChecked;
let previous = input.defaultChecked;
input.removeAttribute(name);
input.defaultChecked = prev;
input.checked = false;
input.defaultChecked = previous;
input.checked = use_default ? previous : false;
}
} else {
element.removeAttribute(key);
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