Construct K Palindrome Strings LeetCode solution in JavaScript

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var canConstruct = function (s, k) {
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  if (s.length < k) return false;
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  // all even all even
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  // all even max k odd
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  const freq = {};
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  for (let c of s) {
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    freq[c] = (freq[c] || 0) + 1;
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  }
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  let oddCount = 0;
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  const freqOfNums = Object.values(freq);
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  for (let cnt of freqOfNums) {
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    if (cnt & 1) oddCount++;
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  }
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  return oddCount <= k;
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};