业务算法

利用 reduce 方法对数据进行归并组合

const tyreList = [
  {
    type: "02",
  },
  {
    type: "04",
  },
  {
    type: "05",
  },
  {
    type: "06",
  },
];
const arr = [2, 4];
let cacheCount = 1;
const resultArr = arr.reduce((acc, item) => {
  const tempArr = new Array(item).fill({});
  const median = tempArr.length / 2;
  const leftTyreArr = [];
  const rightTyreArr = [];
  tempArr.forEach((t, index) => {
    const newInfo = { type: `0${cacheCount}` };
    const f = tyreList.find((l) => l.type === `0${cacheCount}`);
    if (!f) newInfo.className = "no-info-tyre";
    cacheCount += 1;

    if (index < median) {
      leftTyreArr.push(newInfo);
    } else {
      rightTyreArr.push(newInfo);
    }
  });
  acc.push.call(acc, {
    leftTyreArr,
    rightTyreArr,
    tyreType: tempArr.length > 2 ? "back" : "front",
  });
  return acc;
}, []);
console.log("result", resultArr);

TODO