JavaScript - sort array of objects

In this article, we would like to show you how to sort an array of objects by a property value in JavaScript.

1. Sorting array in ascending order

In this example, objects are sorted from smallest to biggest age - Array sort (Array.prototype.sort) method with ascending ordering has been used.

// ONLINE-RUNNER:browser;

var array = [
    { name: 'John', age: 25 },
    { name: 'Kate', age: 32 },
    { name: 'Chris', age: 19 }
];

// sort by age operation asc order eg 1,2,3
array.sort(function(a, b) {
    return a.age - b.age;
});

console.log(JSON.stringify(array));

Output:

[
  { name: 'Chris', age: 19 },
  { name: 'John', age: 25 },
  { name: 'Kate', age: 32 }
]

Notes:

• for a.age - b.age is ascending ordering critery - from smallest to biggest value
• using a.name - b.name we can order ascending by name

2. Sorting array in descending order

In this example, objects are sorted from biggest to smallest age - Array sort (Array.prototype.sort) method with descending ordering has been used.

// ONLINE-RUNNER:browser;

var array = [
    { name: 'John', age: 25 },
    { name: 'Kate', age: 32 },
    { name: 'Chris', age: 19 }
];

// sort by age operation desc order eg 3,2,1
array.sort(function(a, b) {
    return b.age - a.age;
});

console.log(JSON.stringify(array));

Output:

[
  { name: 'Kate', age: 32 },
  { name: 'John', age: 25 },
  { name: 'Chris', age: 19 }
]

Notes:

• for b.age - a.age is descending ordering critery - from biggest to smallest value
• using b.name - a.name we can order descending by name

See also

1. JavaScript - sort array of objects by multiple properties 

2. JavaScript - sort array of objects by date property value

3. JavaScript - sort array of objects by ISO 8601 date string property value