Sorts an array of objects alphabetically based on a given property.

Sort array alphabetically in Javascript.js

// Removed the localeCompare function call
// Replaced it with a more efficient comparison using the less-than and greater-than operators.
// This avoids the overhead of string comparison and should make the function faster.

/**
 * Sorts an array of objects alphabetically based on a specified getter function.
 *
 * @param {Array} arr - The array to be sorted.
 * @param {Function} getter - The getter function used to retrieve the value to compare.
 * @param {string} [order="asc"] - The order in which to sort the array. Default is "asc" (ascending).
 * @return {Array} - The sorted array.
 */
function alphabetical(arr, getter, order = "asc") {
  return arr.sort((a, b) => {
    const aValue = getter(a)
    const bValue = getter(b)
    if (aValue === bValue) return 0
    return order === "asc" ? (aValue < bValue ? -1 : 1) : (aValue > bValue ? -1 : 1)
  })
}



const people = [ { name: 'John' }, { name: 'Adam' }, { name: 'Mary' } ]
alphabetical(people, g => g.name)                       //= [ { name: 'Adam' }, { name: 'John' }, { name: 'Mary' } ]
alphabetical(people, g => g.name, 'desc')               //= [ { name: 'Mary' }, { name: 'John' }, { name: 'Adam' } ]