String

`String.prototype.trimEnd`

Removes whitespace from the end of a string and returns a new string

Syntax

JavaScript

string.trimEnd()

Return Value

A new string with trailing whitespace removed

Examples

Basic Usage

const str = '   Hello   ';
console.log(str.trimEnd()); // '   Hello'

Practical Example

const line = 'content   \n';
console.log(line.trimEnd()); // 'content'

Advanced Usage

const msg = 'no trailing  ';
console.log(msg.trimEnd().length); // 11

Understanding String.prototype.trimEnd

The String.prototype.trimEnd method in JavaScript removes whitespace from the end of a string and returns a new string. 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.trimEnd(). When called, it returns a new string with trailing whitespace removed. Understanding when and how to use trimEnd() helps you write more expressive, readable code.

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

Browser support for String.prototype.trimEnd 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.