How to sort an array of objects by total score

Question

Let's say I have an array of parent objects. Each parent has been given points and each parent has N children, each children has points as well. How can I sort the parents by total points descending (most points to least points). I've provided an example:

const parentsArray = [
{id:1, name: "Wendy", points:3, children: [{name: "Josh", points:2}, {name: "Josh", points: 15}]},
{id:2, name: "George", points: 10, children: [{name: "Mary", points:6}]},
{id:3, name: "Anne", points: 2, children: [{name: "Sarah", points:1.41},
{name: "Kim", points:0.41}]}
];

This is currently my code, but it only sorts on how to sort the points of the parent and does not take into account the points of the children:

parentsArray.sort((p1, p2) => (p2.points - p1.points));

Does this answer your question? [Sort array of objects by string property value](https://stackoverflow.com/questions/1129216/sort-array-of-objects-by-string-property-value) — Ali Abbasov, Jul 17 '21 at 18:59
_"I've provided an example"_ - But not what you've tried so far... — Andreas, Jul 17 '21 at 19:00
I'm sorry, something must've gone wrong during publishing the question, I've added my code during my last edit @Andreas — TeetoGo, Jul 17 '21 at 19:49
Before you answer, make sure you couldn't find your answer in google. — Amini, Jul 17 '21 at 20:07

Spectric · Answer 1 · 2021-07-17T21:57:05.500

0

You can make use of Array.sort:

const parentsArray = [
{id:1, name: "Wendy", points:3, children: [{name: "Josh", points:2}, {name: "Josh"}]},
{id:2, name: "George", points: 10, children: [{name: "Mary", points:6}]},
{id:3, name: "Anne", points: 2, children: [{name: "Sarah", points:1.41},
{name: "Kim", points:0.41}]}
];
parentsArray.sort((a, b)=>{
  return b.points - a.points;
})
parentsArray.forEach((e)=>{
  e.children.sort((a,b)=>{return b.points - a.points});
})
console.log(parentsArray);

edited Jul 17 '21 at 21:57

answered Jul 17 '21 at 19:03

Spectric

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Unfortunately this only sorts on the points of the parents and not parents AND the children – TeetoGo Jul 17 '21 at 19:50
@TeetoGo I've updated my answer. It should work now. – Spectric Jul 17 '21 at 21:57

How to sort an array of objects by total score

1 Answers1