how to make an array in descending order in javascript code example

Example 1: javascript ascending and descending

// ascending and discending for number
const arr1 = [21, 2100, 2, 35000];
const arr2 = [21, 2100, 2, 35000];

let ascN = arr1.sort((f, s) => f - s);
let dscN = arr2.sort((f, s) => s - f);

// ascending and discending for string
const arr3 = ['21', '2100', '2', '35000'];
const arr4 = ['21', '2100', '2', '35000'];

let ascS = arr3.sort((f, s) => f.length - s.length);
let dscS = arr4.sort((f, s) => s.length - f.length);

Example 2: javascript sort

homes.sort(function(a, b) {
    return parseFloat(a.price) - parseFloat(b.price);
});

Example 3: sort function

var vehicules= [
   { nom: "Peugeot 208 1,2l PureTech", img:"208.png" , co2:108 },
   { nom: "Peugeot 5008 2.0 BlueHDi 150", img:"5008.png" , co2: 118 },
   { nom: "Golf GTI", img:"golfgti.png" , co2:148 },
   { nom: "Renault Clio 0.9 TCe 90", img:"clio.jpg" , co2:114 },
   { nom: "Audi A4 2.0 TDI 190", img:"a4.png" , co2: 111},
   { nom: "BMW Serie 2 Tourer 220d", img:"serie2tourer.png" , co2:124 },
   { nom: "Audi SQ7", img:"sq7.png" , co2:198 },
   { nom: "Audi TTS", img:"tts.png" , co2:159 },
];
vehicules.sort(function (a, b) {
   return a.co2 - b.co2;
});
vehicules.forEach(function(v) {
   console.log(v.nom+" avec "+v.co2+" g de CO2/km");    
});

Example 4: javascript sort descending

function sortEggsInNest(a, b) {
  return a > b ? -1 : b > a ? 1 : 0;
}