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LibWeb: Allow FormData entry list to be mutated within a FormDataEvent

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Previously, the list was copied when constructing the FormData object,
then the original list was passed to the event, meaning any changes to
the list that happened within the event would not be reflected outside
of it.
This commit is contained in:
Tim Ledbetter 2024-11-21 13:09:47 +00:00 • committed by Andreas Kling
commit ea0e434d1d
Notes: github-actions[bot] 2024-11-21 19:26:21 +00:00
3 changed files with 23 additions and 2 deletions
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19
Tests/LibWeb/Text/input/HTML/form-add-dynamic-formdata.html Normal file
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<!DOCTYPE html>
<form id="test-form">
<input type="text" name="field1" value="value1">
</form>
<script src="../include.js"></script>
<script>
test(() => {
const form = document.getElementById('test-form');
form.addEventListener('formdata', (event) => {
event.formData.append('field2', 'value2');
});
const formData = new FormData(form);
println(`formData.get('field1') === 'value1': ${formData.get('field1') === 'value1'}`);
println(`formData.get('field2') === 'value2': ${formData.get('field2') === 'value2'}`);
});
</script>