manipulating an array of ranked objects in JS.

ranked-object-manipulation.js

const randRankObjArray = [
  'phil',
  'bennie',
  'carmen',
  'ope',
  'weaksauce',
  'amos',
  'jude',
  'princess',
  'some_person',
  'other_person'
].map(name => ({
  name,
  rank: Math.floor(Math.random() * 10 + 1)
}));

console.log(randRankObjArray);

const orderByRanking = rankedObjArray =>
  rankedObjArray.sort((a, b) => (a.rank <= b.rank ? -1 : 1));

const averageRanking = rankedObjArray => {
  const rankSum = rankedObjArray.reduce(
    (rankAccum, currentRank) => rankAccum + currentRank.rank,
    0
  );
  return rankSum / rankedObjArray.length;
};

console.log('\n\n ordering by rank... ');

console.log(orderByRanking(randRankObjArray));

console.log(`\n Average rank: ${averageRanking(randRankObjArray)}`);