Learn D3.js

Sorting

For simple ascending and descending sorting order, you can use the native JavaScript sort() method to sort arrays without having to write a comparator function, thus returning one of the two built-in comparators provided in d3-array:

Comparator	Description
d3.ascending(a,b)	Comparator to sort an array in ascending order.
d3.descending(a,b)	Comparator to sort an array in descending order.

Built-in sort comparator functions

The following code examples demonstrate the use of these comparators and the expected results (see Arrays/2-sort.html):

const array = [4,2,9,12,6,23,9,71,55,49];const objects = [{value: 5},{value: 3},{value: 9}]array.sort((a,b) => d3.descending(a,b));  // [71,55,49,23,12,9,9,6,4,2]objects.sort((a,b) ...