Divide Two Integers LeetCode solution in JavaScript

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var divide = function (dividend, divisor) {
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  if (dividend == -2147483648 && divisor == -1) return 2147483647;
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  let subdividend = Math.abs(dividend);
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  let subdivisor = Math.abs(divisor);
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  let string_dividend = subdividend.toString();
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  let i = 0;
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  let ans = 0;
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  let remainder = 0;
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  while (i < string_dividend.length) {
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    remainder = remainder * 10 + Number(string_dividend[i]);
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    let quotient = Math.floor(remainder / subdivisor);
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    ans = ans * 10 + quotient;
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    remainder = remainder - quotient * subdivisor;
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    i++;
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  }
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  if ((dividend > 0 && divisor < 0) || (dividend < 0 && divisor > 0))
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    return 0 - ans;
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  return ans;
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};