题解 | #判断版本#

const _shouldUpdate = (oldVersion, newVersion) => {
  // 补全代码
  const olds = oldVersion.split('.');
  const news = newVersion.split('.');
  let num = 0
  for (let i = 0; i < 3; i++) {
    if (news[i] > olds[i] && i == num) {
      return true;
      break;
    } else if (news[i] == olds[i] && i == num) {
      num++;
      continue;
    } else if (news[i] < olds[i] && i == num) {
      return false;
      break;
    }
  }

}

当然还有更好的解答方法，但这种方法最常规，也最容易理解