TypeScript Array sort() Method

TypeScript Sorting Array

Last Updated : 24 Apr, 2025

To sort an array in TypeScript we could use Array.sort() function. The Array.sort() is an inbuilt TypeScript function that is used to sort the elements of an array.

Syntax:

array.sort(compareFunction)

Below are the places where we could use the sort() function:

Table of Content

Sorting array of numbers
Sorting Array of Strings
Sorting Array of Objects

Sorting Array of Numbers

Example: In this example, we have an array of numbers, and we use the sort method with a custom comparison function to sort the array in ascending order.

JavaScript

const numbers: number[] = [4, 2, 7, 1, 9, 5];

numbers.sort((a, b) =&gt; a - b);

console.log(&quot;Sorted Numbers: &quot;, numbers);

Output:

Sorted Numbers: [1, 2, 4, 5, 7, 9]

Sorting Array of Strings

Example: In this example, we have an array of strings, and we use the sort method to sort the strings in default lexicographic order.

JavaScript

const fruits: string[] = [&quot;Apple&quot;, &quot;Orange&quot;, &quot;Banana&quot;, &quot;Mango&quot;];

fruits.sort();

console.log(&quot;Sorted Fruits: &quot;, fruits);

Output:

Sorted Fruits: [ 'Apple', 'Banana', 'Mango', 'Orange' ]

Sorting Array of Objects

Example: In this example, we have an array of people with name and age properties. We use the sort method with a custom comparison function to sort the array based on the age property in ascending order.

JavaScript

interface Person {
    name: string;
    age: number;
}

const people: Person[] = [
    { name: &quot;Alice&quot;, age: 25 },
    { name: &quot;Bob&quot;, age: 30 },
    { name: &quot;Charlie&quot;, age: 22 },
    { name: &quot;David&quot;, age: 28 }
];
people.sort((a, b) =&gt; a.age - b.age);

console.log(&quot;Sorted People by Age: &quot;, people);

Output:

Sorted People by Age: [   
    { name: 'Charlie', age: 22 },   
    { name: 'Alice', age: 25 },   
    { name: 'David', age: 28 },   
    { name: 'Bob', age: 30 }
 ]

TypeScript Array sort() Method

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