array how to sort javascript code example

Example 1: sorting array from highest to lowest javascript

// Sort an array of numbers 
let numbers = [5, 13, 1, 44, 32, 15, 500]

// Lowest to highest
let lowestToHighest = numbers.sort((a, b) => a - b);
//Output: [1,5,13,15,32,44,500]

//Highest to lowest
let highestToLowest = numbers.sort((a, b) => b-a);
//Output: [500,44,32,15,13,5,1]

Example 2: in compare method why we taking a and b for sorting in javascript

for compare and sort method:-
  
function compare(a,b) {
    return a - b;
}
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var numbers = [1,5,3.14];
compare(1,5);     // Returns -4, a is less than b
compare(1,3.14);  // Return -2.14, a is less than b
compare(5,3.14);  // returns 1.86, a is greater than b