1.1 KiB
1.1 KiB
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
adf08ec01beb4f99fc7a68f2 | Remover falsos | 5 | 16014 | falsy-bouncer |
--description--
Remover todos os valores falsos de um array.
Valores falsos (falsy) em JavaScript são false
, null
, 0
, ""
, undefined
, e NaN
.
Dica: tente converter cada valor para um booleano.
--hints--
bouncer([7, "ate", "", false, 9])
deve retornar [7, "ate", 9]
.
assert.deepEqual(bouncer([7, 'ate', '', false, 9]), [7, 'ate', 9]);
bouncer(["a", "b", "c"])
deve retornar ["a", "b", "c"]
.
assert.deepEqual(bouncer(['a', 'b', 'c']), ['a', 'b', 'c']);
bouncer([false, null, 0, NaN, undefined, ""])
deve retornar []
.
assert.deepEqual(bouncer([false, null, 0, NaN, undefined, '']), []);
bouncer([null, NaN, 1, 2, undefined])
deve retornar [1, 2]
.
assert.deepEqual(bouncer([null, NaN, 1, 2, undefined]), [1, 2]);
--seed--
--seed-contents--
function bouncer(arr) {
return arr;
}
bouncer([7, "ate", "", false, 9]);
--solutions--
function bouncer(arr) {
return arr.filter(e => e);
}
bouncer([7, "ate", "", false, 9]);