I have a JS object as follows:
var obj = {"00:11:22:33:44:55" : "AddressB", "66:77:88:99:AA:BB" : "AddressA", "55:44:33:22:11:00" : "AddressC", "AA:BB:CC:DD:EE:FF" : "AddressD"};
The code as follows sorts it alphabetically via key:
sorted = Object.keys(obj)
.sort()
.reduce(function (accSort, keySort)
{
accSort[keySort] = obj[keySort];
return accSort;
}, {});
console.log(sorted);
Which produces the output:
{"00:11:22:33:44:55": "AddressB", "55:44:33:22:11:00": "AddressC", "66:77:88:99:AA:BB": "AddressA", "AA:BB:CC:DD:EE:FF": "AddressD"}
How can I sort the object alphabetically by value so the output is:
{"66:77:88:99:AA:BB": "AddressA", "00:11:22:33:44:55": "AddressB", "55:44:33:22:11:00": "AddressC", "AA:BB:CC:DD:EE:FF": "AddressD" }
You need to sort by the keys
by their values
first, then, use .reduce
to create the resulting ordered object:
const obj = { "00:11:22:33:44:55": "AddressB", "66:77:88:99:AA:BB": "AddressA", "55:44:33:22:11:00": "AddressC", "AA:BB:CC:DD:EE:FF": "AddressD" }; const sorted = Object.keys(obj).sort((a,b) => obj[a].localeCompare(obj[b])).reduce((acc,key) => { acc[key] = obj[key]; return acc; }, {}); console.log(sorted);
Use Object.entries()
to get a 2-dimensional array of keys and values. Sort that by the values, then create the new object with reduce()
.
var obj = {"00:11:22:33:44:55": "AddressB", "66:77:88:99:AA:BB": "AddressA", "55:44:33:22:11:00": "AddressC", "AA:BB:CC:DD:EE:FF": "AddressD"}; sorted = Object.entries(obj).sort(([key1, val1], [key2, val2]) => val1.localeCompare(val2)).reduce(function(accSort, [key, val]) { accSort[key] = val; return accSort; }, {}); console.log(sorted);
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