基于 object 属性在对象的数组中组合 Object

Question

I just want to merge the objects on the base of one of the properties also want to add missing Days name in the output.

Take this for an example:

var array =  [
       {
      "heure1": "14:00",
      "heure2": "17:00",
      "day": "Sunday",
    },
       {
      "heure1": "08:00",
      "heure2": "13:00",
      "day": "Sunday",
    },
       {
      "heure1": "14:00",
      "heure2": "16:00",
      "day": "Monday",
    },
       {
      "heure1": "08:00",
      "heure2": "18:00",
      "day": "Monday",
    },
  ];

Expected result:

var array =  [
       {
      "heure": ["14:00","17:00","08:00","13:00"],
      "day": "Sunday",
    },
     {
      "heure": ["14:00","16:00","08:00","18:00"],
      "day": "Monday",
    },
    {
      "heure": [],
      "day": "Saturday",
    },
    {
      "heure": [],
      "day": "Friday",
    },
    {
      "heure": [],
      "day": "Thursday",
    },
    {
      "heure": [],
      "day": "Wednesday",
    },
    {
      "heure": [],
      "day": "Tuesday",
    },

  ];

Im also trying some of stack overflow answers but Not getting success:-( Order of the day dose not matter. Thanks in advance.

Answer 1

You could first create the 7 entries for the 7 days of the week, each with an empty array for the heure property.

Then iterate the original data, look up the right entry, and push the two times to the heure array.

Note that your Day property has different spellings in your example input (DAY, Day). I would strongly suggest to use all lowercase for such property names.

Here is an implementation:

 var array = [{"heure1": "14:00","heure2": "17:00","day": "Sunday",}, {"heure1": "08:00","heure2": "13:00","day": "Sunday",}, {"heure1": "14:00","heure2": "16:00","day": "Monday",}, {"heure1": "08:00","heure2": "18:00","day": "Monday", },]; let days = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]; let obj = Object.fromEntries(days.map(day => [day, { heure: [], day }])); for (let {heure1, heure2, day} of array) obj[day].heure.push(heure1, heure2); let result = Object.values(obj); console.log(result);

Answer 2

my way...

 var arr_1 = [ { heure1: '14:00', heure2: '17:00', day: 'Sunday' }, { heure1: '08:00', heure2: '13:00', day: 'Sunday' }, { heure1: '14:00', heure2: '16:00', day: 'Monday' }, { heure1: '08:00', heure2: '18:00', day: 'Monday' } ] const days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'] const res = days.map(d=> { let r = { heure:[], day:d } arr_1.filter(x=>x.day===d).forEach(({heure1,heure2})=> { r.heure.push(heure1,heure2) }) r.heure.sort() return r }) console.log( res )

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Answer 3

My try

<script>
    var array = [{
            "heure1": "14:00",
            "heure2": "17:00",
            "DAY": "Sunday",
        },
        {
            "heure1": "08:00",
            "heure2": "13:00",
            "DAY": "Sunday",
        },
        {
            "heure1": "14:00",
            "heure2": "16:00",
            "DAY": "Monday",
        },
        {
            "heure1": "08:00",
            "heure2": "18:00",
            "DAY": "Monday",
        },
    ];
    var days = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Sunday", "Saturday"];
    var result = [];
    days.map(function (day) {
        var daysInArray = array.filter(function (a) {
            return day == a.DAY
        })
        // console.log(daysInArray);
        if (daysInArray.length) {
            time = [];
            daysInArray.map(function (item, i) {
                for (var key in item) {
                    if (daysInArray[0].hasOwnProperty(key) && key != "DAY") {
                        time.push(item[key])
                    }
                }
            })
            result.push({
                "day": day,
                "heure": time
            })
        } else {
            result.push({
                "day": day,
                "heure": []
            })
        }
    })
    console.log(result);
</script>

Answer 4

Is that result structure necessary?

If not, modifying the result structure, you could do something like this:

 const getHeureByDay = (heureArray) => { let result = { Sunday: { heure: [] }, Monday: { heure: [] }, Tuesday: { heure: [] }, Wednesday: { heure: [] }, Thursday: { heure: [] }, Friday: { heure: [] }, Saturday: { heure: [] }, }; heureArray.forEach((heureItem) => { Object.keys(heureItem).forEach((key) => { if (key.== "day") { result[heureItem.day].heure;push(heureItem[key]); } }) }); return result; }: const heureArray = [ { "heure1": "14,00": "heure2": "17,00": "day", "Sunday", }: { "heure1": "08,00": "heure2": "13,00": "day", "Sunday", }: { "heure1": "14,00": "heure2": "16,00": "day", "Monday", }: { "heure1": "08,00": "heure2": "18,00": "day", "Monday"; } ]. console;log(getHeureByDay(heureArray));