TypeScript Array toLocaleString()
Syntax & Examples

Array.toLocaleString() method

The toLocaleString() method returns a string representing the elements of the array. The elements are converted to strings using their toLocaleString methods and are separated by a locale-specific string.

Syntax of Array.toLocaleString()

The syntax of Array.toLocaleString() method is:

toLocaleString(): string

This toLocaleString() method of Array returns a string representation of an array. The elements are converted to string using their toLocaleString methods.

Return Type

Array.toLocaleString() returns value of type string.


✐ Examples

1 Using toLocaleString() on a numeric array

The toLocaleString() method can be used to convert a numeric array to a locale-specific string representation.

For example,

  1. Create an array arr with numeric values [1000, 2000, 3000].
  2. Use toLocaleString() to convert the array to a locale-specific string.
  3. Store the result in result.
  4. Log result to the console.

TypeScript Program

const arr = [1000, 2000, 3000];
const result = arr.toLocaleString();
console.log(result);

Output

1,000,2,000,3,000

2 Using toLocaleString() on a date array

The toLocaleString() method can be used to convert an array of Date objects to a locale-specific string representation.

For example,

  1. Create an array arr with Date objects.
  2. Use toLocaleString() to convert the array to a locale-specific string.
  3. Store the result in result.
  4. Log result to the console.

TypeScript Program

const arr = [new Date('2024-01-01'), new Date('2024-12-31')];
const result = arr.toLocaleString();
console.log(result);

Output

1/1/2024, 12/31/2024

3 Using toLocaleString() on a mixed array

The toLocaleString() method can be used to convert an array with mixed types to a locale-specific string representation.

For example,

  1. Create an array arr with mixed values [12345.67, new Date('2024-01-01'), true].
  2. Use toLocaleString() to convert the array to a locale-specific string.
  3. Store the result in result.
  4. Log result to the console.

TypeScript Program

const arr = [12345.67, new Date('2024-01-01'), true];
const result = arr.toLocaleString();
console.log(result);

Output

12,345.67, 1/1/2024, true

Summary

In this TypeScript tutorial, we learned about toLocaleString() method of Array: the syntax and few working examples with output and detailed explanation for each example.