如何为存储对象的数组创建循环？

时间：2018-08-01 14:23:39

标签： javascript arrays object filter

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属性和一个工作日属性。

我想要的是将所有MONDAY值存储在称为MONDAY的数组中，所有TUESDAY值存储在称为TUESDAY的数组中，等等。该值的键必须为MODE（舒适度，eco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"]);

但是我在这一点上陷入了困境。似乎我需要对值进行硬编码，并手动编写

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

是否有任何方法可以为comfortMode，ecoMode和其他数组创建循环，而每个键为MONDAY的值都存储在名为MONDAY的数组中？

4 个答案:

答案 0 :(得分：0)

这是您可以使用的解决方案。它不是最漂亮，但可以正常工作，并且可以帮助您入门

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)

如果您有任何疑问，请告诉我。

答案 1 :(得分：0)

您可以执行此操作以每天获得一小时的时间

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)

或者这仍然具有模式

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)

这两种方法使您可以毫无问题地扩展初始数组

答案 2 :(得分：0)

这里是您的问题的解决方案。唯一的不同是，在最终输出中，您将不会：

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);

答案 3 :(得分：0)

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

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);

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