如何为存储对象的数组创建循环？

Question

所以，我有一个包含多个对象的数组。

var profile = [
    {"MODE":"Comfort","MONDAY":"09:00:00","TUESDAY":"09:00:00","WEDNESDAY":"09:00:00",
    "THURSDAY":"09:00:00","FRIDAY":"09:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Eco","MONDAY":"22:00:00","TUESDAY":"22:00:00","WEDNESDAY":"22:00:00",
    "THURSDAY":"22:00:00","FRIDAY":"22:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"07:30:00","TUESDAY":"07:30:00","WEDNESDAY":"07:30:00",
    "THURSDAY":"07:30:00","FRIDAY":"07:30:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"21:00:00","TUESDAY":"21:00:00","WEDNESDAY":"21:00:00",
    "THURSDAY":"21:00:00","FRIDAY":"21:00:00","SATURDAY":null,"SUNDAY":null}
    ];

有一个 MODE 属性和一个 week days 属性。

我想要的是将所有 MONDAY 值存储在名为 MONDAY 的数组中，将所有 TUESDAY 值存储在名为 TUESDAY 的数组中，等等。该值的键必须是 MODE（舒适、生态等）的值。 这就是目标：

var MONDAY =  ["Comfort":"09:00:00","ECO":"22:00:00", ...]
var TUESDAY = ["Comfort":"09:00:00","ECO":"22:00:00",...]

我尝试过滤初始数组

var comfort = profile.filter(p => p.MODE == "Comfort");
var eco = profile.filter(p => p.MODE == "Eco");
var standby = profile.filter(p => p.MODE == "Standby");



var comfortMode = comfort[0];
var ecoMode = eco[0];
var standbyMode0 = standby[0];
var standbyMode1 = standby[1];



console.log(ecoMode["MONDAY"]);
console.log(standbyMode0["MONDAY"]);

但我已经卡在那个点上。似乎我需要硬编码值，并手写

    var MONDAY = [ecoMode["MONDAY"],comfortMode["MONDAY"],standbyMode0["MONDAY"],standbyMode1["MONDAY"]];
var TUESDAY  = [...,...,...,...]

有没有什么方法可以为comfortMode、ecoMode 和其他数组创建循环，其中每个键为MONDAY 的值都存储在一个名为MONDAY 的数组中？

Answer 1

这是您的问题的解决方案。唯一的区别是在最终输出中你不会是：

var MONDAY =  ["Comfort":"09:00:00","ECO":"22:00:00", ...]
var TUESDAY = ["Comfort":"09:00:00","ECO":"22:00:00",...]

它将是一个以工作日为键的对象。

{
  "MONDAY": [
    {
      "Comfort": "09:00:00"
    },
    {
      "Eco": "22:00:00"
    },
    {
      "Standby": "07:30:00"
    },
    {
      "Standby": "21:00:00"
    }
  ],
  "TUESDAY": [
    {
      "Comfort": "09:00:00"
    },
    {
      "Eco": "22:00:00"
    },
    {
      "Standby": "07:30:00"
    },
    {
      "Standby": "21:00:00"
    }
  ],
  "WEDNESDAY": [
    {
      "Comfort": "09:00:00"
    },
    {
      "Eco": "22:00:00"
    },
    {
      "Standby": "07:30:00"
    },
    {
      "Standby": "21:00:00"
    }
  ],
  "THURSDAY": [
    {
      "Comfort": "09:00:00"
    },
    {
      "Eco": "22:00:00"
    },
    {
      "Standby": "07:30:00"
    },
    {
      "Standby": "21:00:00"
    }
  ],
  "FRIDAY": [
    {
      "Comfort": "09:00:00"
    },
    {
      "Eco": "22:00:00"
    },
    {
      "Standby": "07:30:00"
    },
    {
      "Standby": "21:00:00"
    }
  ],
  "SATURDAY": [
    {
      "Comfort": null
    },
    {
      "Eco": null
    },
    {
      "Standby": null
    },
    {
      "Standby": null
    }
  ],
  "SUNDAY": [
    {
      "Comfort": null
    },
    {
      "Eco": null
    },
    {
      "Standby": null
    },
    {
      "Standby": null
    }
  ]
}

var profile = [
    {"MODE":"Comfort","MONDAY":"09:00:00","TUESDAY":"09:00:00","WEDNESDAY":"09:00:00",
    "THURSDAY":"09:00:00","FRIDAY":"09:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Eco","MONDAY":"22:00:00","TUESDAY":"22:00:00","WEDNESDAY":"22:00:00",
    "THURSDAY":"22:00:00","FRIDAY":"22:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"07:30:00","TUESDAY":"07:30:00","WEDNESDAY":"07:30:00",
    "THURSDAY":"07:30:00","FRIDAY":"07:30:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"21:00:00","TUESDAY":"21:00:00","WEDNESDAY":"21:00:00",
    "THURSDAY":"21:00:00","FRIDAY":"21:00:00","SATURDAY":null,"SUNDAY":null}
    ];

var weekdays = ["MONDAY", "TUESDAY", "WEDNESDAY", "THURSDAY", "FRIDAY", "SATURDAY", "SUNDAY"];

var finalResult = weekdays.reduce((acc, currentDay) => {
    var dayValues = profile.reduce((acc1, currentProfile) => {
        return [...acc1, {
            [currentProfile.MODE]: currentProfile[currentDay]
        }]
    }, []);

    return {
        ...acc,
        [currentDay]: dayValues,
    };
}, {});

console.log(finalResult);

Answer 2

这是您可以使用的解决方案。这不是最漂亮的，但它很有效，可以让你开始

var profile = [
    {"MODE":"Comfort","MONDAY":"09:00:00","TUESDAY":"09:00:00","WEDNESDAY":"09:00:00",
    "THURSDAY":"09:00:00","FRIDAY":"09:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Eco","MONDAY":"22:00:00","TUESDAY":"22:00:00","WEDNESDAY":"22:00:00",
    "THURSDAY":"22:00:00","FRIDAY":"22:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"07:30:00","TUESDAY":"07:30:00","WEDNESDAY":"07:30:00",
    "THURSDAY":"07:30:00","FRIDAY":"07:30:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"21:00:00","TUESDAY":"21:00:00","WEDNESDAY":"21:00:00",
    "THURSDAY":"21:00:00","FRIDAY":"21:00:00","SATURDAY":null,"SUNDAY":null}
    ];

    let monday = []
    let tuesday = []
    let wednesday = []
    let thursday = []
    let friday = []
    let saturday = []
    let sunday = []
    profile.forEach(e => {
        let mode = e.MODE
        let mondayVal = e.MONDAY
        let tuesdayVal = e.TUESDAY
        let wednesdayVal = e.WEDNESDAY
        let thursdayVal = e.THURSDAY
        let fridayVal = e.FRIDAY
        let saturdayVal = e.SATURDAY
        let sundayVal = e.SUNDAY
        monday.push({[mode]: mondayVal})
        tuesday.push({[mode]: tuesdayVal})
        wednesday.push({[mode]: wednesdayVal})
        thursday.push({[mode]: thursdayVal})
        friday.push({[mode]: fridayVal})
        saturday.push({[mode]: saturdayVal})
        sunday.push({[mode]: sundayVal})
    })

console.log("Monday: ", monday)
console.log("Tuesday: ", tuesday)
console.log("Wednesday: ", wednesday)
console.log("Thursday: ", thursday)
console.log("Friday: ", friday)
console.log("Saturday: ", saturday)
console.log("Sunday: ", sunday)

如果您有任何问题，请告诉我。

Answer 3

您可以这样做以获得每天的一组小时数

let profile = [
    {"MODE":"Comfort","MONDAY":"09:00:00","TUESDAY":"09:00:00","WEDNESDAY":"09:00:00",
    "THURSDAY":"09:00:00","FRIDAY":"09:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Eco","MONDAY":"22:00:00","TUESDAY":"22:00:00","WEDNESDAY":"22:00:00",
    "THURSDAY":"22:00:00","FRIDAY":"22:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"07:30:00","TUESDAY":"07:30:00","WEDNESDAY":"07:30:00",
    "THURSDAY":"07:30:00","FRIDAY":"07:30:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"21:00:00","TUESDAY":"21:00:00","WEDNESDAY":"21:00:00",
    "THURSDAY":"21:00:00","FRIDAY":"21:00:00","SATURDAY":null,"SUNDAY":null}
];

// declare the object with the resulting arrays
let days = {}

profile.forEach(prof => {
  // we remember the mode for later
  let mode = prof.MODE;
  
  // for .. in loop each attribute of an object
  for (let i in prof) {
    // not needed to save modes
    if (i !== "MODE") {
      // create the array for the day if it doesn't exists 
      if (typeof days[i] === "undefined") {days[i] = [];}
      // add the current value
      days[i].push(prof[i]);
    }
  }
  
})

// show the final object
console.log(days)

或者这个仍然有模式

let profile = [
    {"MODE":"Comfort","MONDAY":"09:00:00","TUESDAY":"09:00:00","WEDNESDAY":"09:00:00",
    "THURSDAY":"09:00:00","FRIDAY":"09:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Eco","MONDAY":"22:00:00","TUESDAY":"22:00:00","WEDNESDAY":"22:00:00",
    "THURSDAY":"22:00:00","FRIDAY":"22:00:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"07:30:00","TUESDAY":"07:30:00","WEDNESDAY":"07:30:00",
    "THURSDAY":"07:30:00","FRIDAY":"07:30:00","SATURDAY":null,"SUNDAY":null},
    {"MODE":"Standby","MONDAY":"21:00:00","TUESDAY":"21:00:00","WEDNESDAY":"21:00:00",
    "THURSDAY":"21:00:00","FRIDAY":"21:00:00","SATURDAY":null,"SUNDAY":null}
];
// declare the object with the resulting arrays
let days = {}

profile.forEach(prof => {

  // we remember the mode for later
  let mode = prof.MODE;
  
  // for .. in loop each attribute of an object
  for (let i in prof) {
    // not needed to save modes
    if (i !== "MODE") {
      // create the object for the day if it doesn't exists 
      if (typeof days[i] === "undefined") {days[i] = {};}
      // create the array for the mode if it doesn't exists 
      if (typeof days[i][mode] === "undefined") {days[i][mode] = []}
      
      // add the current value
      days[i][mode].push(prof[i]);
    }
  }
  
})

// show the final object
console.log(days)

这两种方法可以让你毫无问题地增长你的初始数组

Answer 4

您可以使用Array.prototype.reduce 对输入数组中的项目进行分组并聚合所需的输出：

var profile=[{MODE:"Comfort",MONDAY:"09:00:00",TUESDAY:"09:00:00",WEDNESDAY:"09:00:00",THURSDAY:"09:00:00",FRIDAY:"09:00:00",SATURDAY:null,SUNDAY:null},{MODE:"Eco",MONDAY:"22:00:00",TUESDAY:"22:00:00",WEDNESDAY:"22:00:00",THURSDAY:"22:00:00",FRIDAY:"22:00:00",SATURDAY:null,SUNDAY:null},{MODE:"Standby",MONDAY:"07:30:00",TUESDAY:"07:30:00",WEDNESDAY:"07:30:00",THURSDAY:"07:30:00",FRIDAY:"07:30:00",SATURDAY:null,SUNDAY:null},{MODE:"Standby",MONDAY:"21:00:00",TUESDAY:"21:00:00",WEDNESDAY:"21:00:00",THURSDAY:"21:00:00",FRIDAY:"21:00:00",SATURDAY:null,SUNDAY:null}];

var result = profile.reduce((all, el) => {

    Object.keys(el).filter(k => k !== 'MODE').forEach(k => all[k].push({[el.MODE]: el[k]}));

    return all;

}, { MONDAY:[], TUESDAY:[], WEDNESDAY: [], THURSDAY:[], FRIDAY:[], SATURDAY:[], SUNDAY:[] });

console.log(result);