24 Game LeetCode solution in JavaScript

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/**
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 * @param {number[]} cards
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 * @return {boolean}
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1487
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7-1 8-4
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 */
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var judgePoint24 = function (cards) {
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  let minV = 0.00000001;
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  let numL = [];
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  cards.forEach((card) => numL.push(card));
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  function judge(nums) {
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    if (nums.length === 1) return Math.abs(nums[0] - 24) <= minV;
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    else {
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      for (let i = 0; i < nums.length; i++) {
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        for (let j = 0; j < i; j++) {
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          let a = nums[i],
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            b = nums[j];
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          let val = [a + b, a - b, b - a, a * b, a / b, b / a];
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          let copy = [...nums];
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          copy.splice(i, 1);
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          copy.splice(j, 1);
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          for (let v of val) {
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            copy.push(v);
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            if (judge(copy)) {
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              return true;
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            }
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            copy.pop();
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          }
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        }
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      }
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      return false;
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    }
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  }
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  return judge(numL);
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};