<!
doctype html>
<
title>VTTRegion.id</
title>
<
link rel=
"help" href=
"https://w3c.github.io/webvtt/#dom-vttregion-id">
<
script src=/resources/testharness.js></
script>
<
script src=/resources/testharnessreport.js></
script>
<
div id=log></
div>
<
script>
test(function() {
var region = new VTTRegion();
assert_true(
'id' in region,
'id is not supported');
assert_equals(region.id,
'',
'initial value');
region.id =
'1';
assert_equals(region.id,
'1',
'value after setting to "1"');
region.id =
'';
assert_equals(region.id,
'',
'value after setting to the empty string');
}, document.
title +
' script-created region');
</
script>
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