Maximum Nesting Depth of the Parentheses LeetCode solution in JavaScript

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var maxDepth = function (s) {
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  let maxCount = 0,
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    count = 0;
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  for (let i = 0; i < s.length; i++) {
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    if (s[i] === "(") {
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      maxCount = Math.max(maxCount, ++count);
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    } else if (s[i] === ")") {
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      count--;
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    }
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  }
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  return maxCount;
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};