JAVASCRIPT

ascending and descending val in array using js

numArray.sort((a, b) => a - b); // For ascending sort
numArray.sort((a, b) => b - a); // For descending sort

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);

js sort numbers descending order

// Sort Numbers in Descending Order
function sortDescending(num) {
	return Number(num.toString().split('').sort((a, b) => b - a).join(''));
//or: return parseInt(num.toString().split('').sort().reverse().join(''));
}

console.log(sortDescending(123)); // 321
console.log(sortDescending(1254859723)); // 9875543221

javascript sort numbers descending

var numArray = [140000, 32, 12, 63323, 104, 99];

numArray.sort(function(a, b) {
  return b - a;
});

// Array(6) [ 140000, 63323, 104, 99, 32, 12 ]

javascript sort Array descending order

//used arraow functions
const years = [1970, 1999, 1951, 1982, 1963, 2011, 2018, 1922]
const sortYears = arr =>{
  arr.sort((a,b)=>{return b-a})
  return arr
}
console.log(sortYears(years))
// Should print [ 2018, 2011, 1999, 1982, 1970, 1963, 1951, 1922 ]