Javascript 您如何简化这个if/else语句？

我对学习JavaScript非常陌生，所以我使用if/else对一些数据进行分类，但数据量很大

这是VO2max计算器的一部分，它计算出一个人的VO2max，然后决定这个值是不是很好，到底是不是很差

从中提取值的数据表可能是一种方法？但我不知道怎么做：

我怎样才能简化这个？我能读些什么来弄明白呢？或者使用下面的方法不是一个坏习惯吗？谢谢

if(vitals.gender === 1) {
            if(vitals.age >= 18 && vitals.age <= 25) {
                if(vo2 > 60) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 52) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 47) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 42) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 37) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 30) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 26 && vitals.age <= 35) {
                 if(vo2 > 56) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 49) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 43) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 40) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 35) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 30) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 36 && vitals.age <= 45) {
                 if(vo2 > 51) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 43) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 39) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 35) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 31) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 26) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 46 && vitals.age <= 55) {
                 if(vo2 > 45) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 39) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 36) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 32) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 29) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 25) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } 
            } else if (vitals.age >= 56 && vitals.age <= 65) {
                 if(vo2 > 41) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 36) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 32) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 30) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 26) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 22) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 65) {
                 if(vo2 > 37) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 33) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 29) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 26) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 22) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 20) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else {
                VO2MaxRating = "Missing";
                document.getElementById("outputVo2").textContent = 'Either you\re under 18 or missing details';
            }
        } else {
            if(vitals.age >= 18 && vitals.age <= 25) {
                if(vo2 > 56) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 47) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 42) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 38) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 33) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 28) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 26 && vitals.age <= 35) {
                 if(vo2 > 52) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 45) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 39) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 35) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 31) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 26) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 36 && vitals.age <= 45) {
                 if(vo2 > 45) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 38) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 34) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 31) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 27) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 22) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 46 && vitals.age <= 55) {
                 if(vo2 > 40) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 34) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 31) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 28) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 25) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 20) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } 
            } else if (vitals.age >= 56 && vitals.age <= 65) {
                 if(vo2 > 37) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 32) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 28) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 25) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 22) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 18) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else if (vitals.age >= 65) {
                 if(vo2 > 32) {
                    VO2MaxRating = "Excellent";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 28) {
                    VO2MaxRating = "Good";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 25) {
                    VO2MaxRating = "Above Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 22) {
                    VO2MaxRating = "Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 19) {
                    VO2MaxRating = "Below Average";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else if (vo2 >= 17) {
                    VO2MaxRating = "Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                } else {
                    VO2MaxRating = "Very Poor";
                    document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + VO2MaxRating + ")";
                }
            } else {
                VO2MaxRating = 
                document.getElementById("outputVo2").textContent = 'Either you\re under 18 or missing details';
            }
        }

if（vitals.gender==1）{
如果（vitals.age>=18和vitals.age 60）{
VO2MaxRating=“极好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=52）{
VO2MaxRating=“良好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=47）{
VO2MaxRating=“高于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=42）{
VO2MaxRating=“平均”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=37）{
VO2MaxRating=“低于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=30）{
VO2MaxRating=“差”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则{
VO2MaxRating=“非常差”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}
}否则如果（vitals.age>=26和vitals.age 56）{
VO2MaxRating=“极好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=49）{
VO2MaxRating=“良好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=43）{
VO2MaxRating=“高于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=40）{
VO2MaxRating=“平均”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=35）{
VO2MaxRating=“低于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=30）{
VO2MaxRating=“差”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则{
VO2MaxRating=“非常差”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}
}否则如果（vitals.age>=36和vitals.age 51）{
VO2MaxRating=“极好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=43）{
VO2MaxRating=“良好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=39）{
VO2MaxRating=“高于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=35）{
VO2MaxRating=“平均”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=31）{
VO2MaxRating=“低于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=26）{
VO2MaxRating=“差”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则{
VO2MaxRating=“非常差”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}
}否则如果（vitals.age>=46和vitals.age 45）{
VO2MaxRating=“极好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=39）{
VO2MaxRating=“良好”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=36）{
VO2MaxRating=“高于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=32）{
VO2MaxRating=“平均”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=29）{
VO2MaxRating=“低于平均值”；
document.getElementById（“outputVo2”）.textContent=vo2+'ml/kg/min（'+VO2MaxRating+”）；
}否则如果（vo2>=25）{
VO2MaxRating=“差”；
document.get
const VO2MaxRating = {
  52: 'Excellent',
  47: 'Good',
  42: 'Above Average',
  37: 'Average',
  30: 'Below Average',
  0: 'Poor',
}

const setRating = (rate, maxRatingObject) => {
  for (let vo2Rating in maxRatingObject) {
    if (rate >= parseInt(vo2Rating)) {
      return maxRatingObject[vo2Rating]
    }
  }
}
document.getElementById("outputVo2").textContent = vo2 + ' ml/kg/min (' + setRating(vo2, VO2MaxRating) + ")";