Let say I have an object with numbers as key and string as value
var obj = {
'24': 'Sean',
'17': 'Mary',
'88': 'Andrew',
'46': 'Kelvin'
}
Is there an easy way to sort the keys into an array based on their value where the result will looks like this:
[88,46,17,24]
Here's one way to do it:
var obj = {
'24': 'Sean',
'17': 'Mary',
'88': 'Andrew',
'46': 'Kelvin'
}
var sortedKeys = Object.keys(obj).sort(function(a, b) {
return obj[a].localeCompare(obj[b]);
}).map(Number)
console.log(sortedKeys)Omit the .map() part if you are happy for the result to be an array of strings rather than numbers.
Further reading:
Or the same thing but with ES6 arrow functions:
const sortedKeys = Object.keys(obj)
.sort((a, b) => obj[a].localeCompare(obj[b]))
.map(Number)
.map() I happened to notice the strings in the output. I notice that other than that you independently came up with exactly the same thing except with arrow functions, which is certainly a lot neater assuming they're acceptable to the OP. Given that you deleted that answer I might add arrow functions to mine..map(Number)