Sort object of weekdays like Sunday, Monday, ..., Saturday [duplicate]

Question

How to sort Javascript object of week days by weekdays i.e Here, is JSON format of object:

 {"Friday":["5:00pm to 12:00am"] ,"Wednesday":["5:00pm to 11:00pm"],"Sunday":["11:00am to 11:00pm"], "Thursday":["5:00pm to 11:00pm"],"Saturday":["11:00am to 12:00am"]}

where key is day i.e."Wednesday". I want to sort it based on order of weekdays i.e Sunday, Monday, Tuesday etc

Expected Output is:

{ "Wednesday":["5:00pm to 11:00pm"], "Thursday":["5:00pm to 11:00pm"], "Friday":["5:00pm to 12:00am"], "Saturday":["11:00am to 12:00am"], "Sunday":["11:00am to 11:00pm"]}

this is what i was trying.

var keys = {}; 
Object.keys(scope.daySpecificHours)
.map(function (k) { return [k, scope.daySpecificHours[k]]; })
.sort(function (a, b) {
if (a[0] < b[0]) return -1;
if (a[0] > b[0]) return 1;
return 0;
})
.forEach(function (d) {
scope.daySpecificHours[d[0]] = d;
});

Thanks.

Answer 1

Like I said in my comment, you can't sort an object but if you can change your data's format to have an array, you can easily sort it by using [].sort

let data = [
  { day: "Friday", hours: ["5:00pm to 12:00am"] },
  { day: "Wednesday", hours: ["5:00pm to 11:00pm"] },
  { day: "Sunday", hours: ["11:00am to 11:00pm"] },
  { day: "Thursday", hours: ["5:00pm to 11:00pm"] },
  { day: "Saturday", hours: ["11:00am to 12:00am"] }
];

const sorter = {
  // "sunday": 0, // << if sunday is first day of week
  "monday": 1,
  "tuesday": 2,
  "wednesday": 3,
  "thursday": 4,
  "friday": 5,
  "saturday": 6,
  "sunday": 7
}

data.sort(function sortByDay(a, b) {
  let day1 = a.day.toLowerCase();
  let day2 = b.day.toLowerCase();
  return sorter[day1] - sorter[day2];
});

console.log(data);
document.write("<pre>" + JSON.stringify(data, null, 3) + "</pre>");

edit

To "order" your object's keys by day of the week, again order is not guaranteed, use at your own risk

let data = {
  "Friday": ["5:00pm to 12:00am"],
  "Wednesday": ["5:00pm to 11:00pm"],
  "Sunday": ["11:00am to 11:00pm"],
  "Thursday": ["5:00pm to 11:00pm"],
  "Saturday": ["11:00am to 12:00am"]
};

const sorter = {
  "monday": 1,
  "tuesday": 2,
  "wednesday": 3,
  "thursday": 4,
  "friday": 5,
  "saturday": 6,
  "sunday": 7
};

let tmp = [];
Object.keys(data).forEach(function(key) {
  let value = data[key];
  let index = sorter[key.toLowerCase()];
  tmp[index] = {
    key: key,
    value: value
  };
});

let orderedData = {};
tmp.forEach(function(obj) {
  orderedData[obj.key] = obj.value;
});

console.log(orderedData);
document.write("<pre>" + JSON.stringify(orderedData, null, 3) + "</pre>");