[javascript] -One Line Solution
please upvote, you motivate me to solve problems in original ways

```javascript []
const canConstruct = (s, k, frequencies = Object.values([...s].reduce((o, v) => (o[v] = (o[v]|0) + 1, o), {}))) =>
    s.length >= k && frequencies.filter(n => n%2).length <= k;

```

#### please upvote, you motivate me to solve problems in original ways
['JavaScript']