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JavaScript - String endsWith() method example

3 points
Created by:
Jan-Alfaro
501

The method checks if string ends with some text.

// ONLINE-RUNNER:browser;

const text = 'ABC';

console.log(text.endsWith('C'));  // true
console.log(text.endsWith('BC')); // true

 


1. Documentation

Syntax

String endsWith(searchString)

String endsWith(searchString, endPosition)

Typed syntaxString endsWith(searchString: string, endPosition?: number): boolean
Parameters

searchString - text searched for at the end of the string

endPosition (optional) - indicates the part of the string that we want to test (by default this.length)

ResultReturns true if the given text was found at the end of the string, otherwise returns false.
Description

The endsWith() is non-static method that checks whether a string ends with the text of a specified string, returning true or false. When we use endPosition paramter the metod cuts search area to endPosition (it is treat as the string length).

Warning: intoduced in ES2015.


2. Practical example

Example 1

// ONLINE-RUNNER:browser;

const text = 'Some text ...';

console.log(text.endsWith('...'));       // true
console.log(text.endsWith('text ...'));  // true

console.log(text.endsWith('Some'));      // false
console.log(text.endsWith('Some text')); // false

Example 2 - with optional endPosition character

// ONLINE-RUNNER:browser;

// endPosition:   4    9
//                |    |
//                v    v
const text = 'Some text ...';

console.log(text.endsWith('Some', 4));  // true 
console.log(text.endsWith('text', 9));  // true
console.log(text.endsWith('Some', 9));  // false   // 'Some text' doesn't end with 'Some'

console.log(text.endsWith('text ...', text.length));  // true

 

References

  1. String.prototype.endsWith() - JavaScript | MDN

Alternative titles

  1. JavaScript - String.prototype.endsWith() documentation with examples
  2. js - String endsWith() method documentation with examples
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JavaScript - String (documentation)

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