Number of 1 Bits LeetCode solution in JavaScript

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var hammingWeight = function (n) {
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  let count = 0,
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    i = 0;
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  while (n > 0) {
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    i = 0;
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    while (n >= Math.pow(2, i)) {
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      i++;
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    }
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    count++;
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    n -= Math.pow(2, i - 1);
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  }
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  return count;
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};