Sort arrays of objects by string, number, or date properties.
Use Array.prototype.sort() with a custom comparator function to sort objects by any property.
Subtract: (a, b) => a.age - b.age for ascending, or b.age - a.age for descending.
Use localeCompare() for correct alphabetical ordering (handles accents, locale differences).
Convert to Date objects or timestamps and subtract.
.sort() mutates the original array. Use [...arr].sort() to sort a copy.
const users = [
{ name: 'Charlie', age: 30 },
{ name: 'Alice', age: 25 },
{ name: 'Bob', age: 35 }
];
// Sort by age ascending
const byAge = [...users].sort((a, b) => a.age - b.age);
// Sort by name alphabetically
const byName = [...users].sort((a, b) => a.name.localeCompare(b.name));
// Sort by date
const posts = [
{ title: 'First', date: '2024-01-15' },
{ title: 'Second', date: '2024-03-20' },
];
const byDate = [...posts].sort((a, b) => new Date(a.date) - new Date(b.date));