String

`String.fromCodePoint`

Returns a string created by using the specified sequence of code points

Syntax

JavaScript

String.fromCodePoint(...codePoints)

Parameters

Parameter	Type	Description
codePoints	number[]	Sequence of code points

Return Value

A string created from the specified code points

Examples

Basic Usage

console.log(String.fromCodePoint(128512)); // '😀'

Practical Example

console.log(String.fromCodePoint(9731, 9733, 9842)); // '☃★♲'

Advanced Usage

const codePoints = [72, 101, 108, 108, 111];
console.log(String.fromCodePoint(...codePoints)); // 'Hello'

Understanding String.fromCodePoint

The String.fromCodePoint method in JavaScript returns a string created by using the specified sequence of code points. It belongs to the String object and is one of the most widely used methods for working with string values in modern JavaScript and TypeScript applications.

The method signature is String.fromCodePoint(...codePoints). It accepts 1 parameter: codePoints. When called, it returns a string created from the specified code points. Understanding when and how to use fromCodePoint() helps you write more expressive, readable code.

Common use cases for String.fromCodePoint include data transformation, input validation, API response processing, and building reusable utility functions. It works well alongside related methods like string-fromcharcode, string-codepointat, enabling you to chain operations together for complex data manipulation pipelines.

Browser support for String.fromCodePoint is excellent across all modern browsers including Chrome, Firefox, Safari, and Edge. It is also fully supported in Node.js and Deno. For older environments, transpilation with Babel or a polyfill may be needed.