Sorting object properties by property value

Question

I have an JavaScript object:

var objs = {'1':2, '2':3, '3':1, '4':2};

How can I sort the properties by the value of numbers in JavaScript?

I know about sort(a,b), but that only seems to work on strings and numbers. Do I need to add a toString() method to my objects?

why do you want to sort an object? Even if you build an object with presorted properties, it is not guaranteed that they will display in the same order in the future — bill.gates, Jun 18 '20 at 11:51
@evolutionxbox, you can with a new object, but not index like values. — Nina Scholz, Jun 18 '20 at 11:51
i want to get arr = [3,1,4,2] from that object. how to get that? — Ahmad S Habibi, Jun 18 '20 at 12:01

score 1 · Accepted Answer · edited Jun 18 '20 at 12:41

An object does not (always) follow the insertion order. So it can't be guaranty that you always get same output. For sorting you can use either array or Map to maintain the order. For more info please see stackoverflow discussion.

According to question: var objs = {'1':2, '2':3, '3':1, '4':2}; How can I sort them by the value of numbers in JavaScript? You can do as follows

var objs = {
  '1': 2,
  '2': 3,
  '3': 1,
  '4': 2
};
var map = new Map(Object.entries(objs));
var sorted = new Map(Array.from(map).sort((a, b) => a[1] - b[1]));
console.log(sorted);

Sorting object properties by property value

1 Answers1