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<!doctype html>
<html>
<head>
<meta charset="utf8">
<link rel="help" href="http://url.spec.whatwg.org/#dom-urlsearchparams-delete">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/testharness-extras.js"></script>
<script>
test(function() {
var params = new URLSearchParams('a=b&c=d');
params.delete('a');
assert_equals(params + '', 'c=d');
params = new URLSearchParams('a=a&b=b&a=a&c=c');
params.delete('a');
assert_equals(params + '', 'b=b&c=c');
params = new URLSearchParams('a=a&=&b=b&c=c');
params.delete('');
assert_equals(params + '', 'a=a&b=b&c=c');
params = new URLSearchParams('a=a&null=null&b=b');
params.delete(null);
assert_equals(params + '', 'a=a&b=b');
params = new URLSearchParams('a=a&undefined=undefined&b=b');
params.delete(undefined);
assert_equals(params + '', 'a=a&b=b');
}, 'Delete basics');
test(function() {
var params = new URLSearchParams();
params.append('first', 1);
assert_true(params.has('first'), 'Search params object has name "first"');
assert_equals(params.get('first'), '1', 'Search params object has name "first" with value "1"');
params.delete('first');
assert_false(params.has('first'), 'Search params object has no "first" name');
params.append('first', 1);
params.append('first', 10);
params.delete('first');
assert_false(params.has('first'), 'Search params object has no "first" name');
}, 'Deleting appended multiple');
</script>
</head>
</html>
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