帮忙优化一下代码，总觉得自己写的好麻烦，哪里不太对?

Question

应该一次循环就能搞定吧

  let MondayTotal = 0;

  MondayTotal = newData.reduce((item, v) => {

    return item + parseFloat(v.Monday);

  }, MondayTotal);

  let TuesdayTotal = 0;

  TuesdayTotal = newData.reduce((item, v) => {

    return item + parseFloat(v.Tuesday);

  }, TuesdayTotal);

  let WednesdayTotal = 0;

  WednesdayTotal = newData.reduce((item, v) => {

    return item + parseFloat(v.Wednesday);

  }, WednesdayTotal);

  let ThursdayTotal = 0;

  ThursdayTotal = newData.reduce((item, v) => {

    return item + parseFloat(v.Thursday);

  }, ThursdayTotal);

  let FridayTotal = 0;

  FridayTotal = newData.reduce((item, v) => {

    return item + parseFloat(v.Friday);

  }, FridayTotal);

  let SaturdayTotal = 0;

  SaturdayTotal = newData.reduce((item, v) => {

    return item + parseFloat(v.Saturday);

  }, SaturdayTotal);

  let SundayTotal = 0;

  SundayTotal = newData.reduce((item, v) => {

    return item + parseFloat(v.Sunday);

  }, SundayTotal);

Answer 1

const week = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']const weekdata = week.map((day, idx) => newData.reduce((item, v) => item + parseFloat(v[day]), 0)后面那块逻辑是按照你代码搬过来了，出问题不怪我 :)

Answer 2

安利一下柯里化：const getTotal = function (list) {    return function (day) {        return list.reduce((result, item) => (            result + parseFloat(item[day])        ), 0);    };}const getWeekdayTotal = getTotal(newData);// single daylet mondayTotal = getWeekdayTotal("Monday");let tuesdayTotal = getWeekdayTotal("Tuesday");// multiple dayslet days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'];let daysTotal = days.map(getWeekdayTotal);