CODEWITHSUNDEEP
lodash
Daniel Santos
Daniel Santos

Reputation: 15908

How to use lodash sortBy together with custom order comparator

I would like to sort an array with a comparator like:

function myCustomComparator(a, b){...}

It would be like

var sorted = myArray.sort(myCustomComparator);

But I would like to use it inside a lodash command chain using sortBy

How can i use myCustomComparator in a Lodash SortBy call?

Upvotes: 3

Views: 1259

Answers (1)

wesleyfung
wesleyfung

Reputation: 102

From the Lodash documentation, it states:

Creates an array of elements, sorted in ascending order by the results of running each element in a collection thru each iteratee.

If anyone can prove me wrong otherwise, I don't think you're able to apply a custom comparator to lodashs' sortBy function.

If it helps, or for anyone stumbling on this, a custom comparator sort function can be achieved with the following snippet.

var arr = [ 4, 2, 1, 3, 5, 8, 7, 6, 0 ];

function customComparator(a, b) {
    return (a > b) ? -1 : 1;
}

var sorted = arr.sort(customComparator);

Upvotes: 5

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