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Co-authored-by: Naomi <accounts+github@nhcarrigan.com>
1.3 KiB
1.3 KiB
| id | title | challengeType | forumTopicId | dashedName |
|---|---|---|---|---|
| a77dbc43c33f39daa4429b4f | Boo who | 1 | 16000 | boo-who |
--description--
Check if a value is classified as a boolean primitive. Return true or false.
Boolean primitives are true and false.
--hints--
booWho(true) should return true.
assert.isTrue(booWho(true));
booWho(false) should return true.
assert.isTrue(booWho(false));
booWho([1, 2, 3]) should return false.
assert.isFalse(booWho([1, 2, 3]));
booWho([].slice) should return false.
assert.isFalse(booWho([].slice));
booWho({ "a": 1 }) should return false.
assert.isFalse(booWho({ a: 1 }));
booWho(1) should return false.
assert.isFalse(booWho(1));
booWho(NaN) should return false.
assert.isFalse(booWho(NaN));
booWho("a") should return false.
assert.isFalse(booWho('a'));
booWho("true") should return false.
assert.isFalse(booWho('true'));
booWho("false") should return false.
assert.isFalse(booWho('false'));
--seed--
--seed-contents--
function booWho(bool) {
return bool;
}
booWho(null);
--solutions--
function booWho(bool) {
return typeof bool === 'boolean';
}
booWho(null);