Jul 10, 2025 · The includes () method of String values performs a case-sensitive search to determine whether a given string may be found within this string, returning true or false as appropriate.

Description The includes() method returns true if a string contains a specified string. Otherwise it returns false. The includes() method is case sensitive.

Jan 16, 2026 · The includes () method is used to check whether a string contains a specific value. It returns a boolean result based on whether the text is found or not. Returns true if the string contains …

In this tutorial, you will learn how to use the JavaScript String includes () method to check if a string contains a substring.

Dec 5, 2025 · Learn how to check if a string contains a specific value in JavaScript using includes (), indexOf (), and regex. Simple examples for beginners.

Nov 5, 2021 · In JavaScript you can use the .includes() method to see if one string is found in another. But how does it work exactly? In this article, I will walk you through a few code examples of the …

Learn how to use the JavaScript String includes () method to check if a string contains a specified substring. Explore syntax, examples, and practical applications.

Sep 12, 2025 · JavaScript string includes () method checks whether one string may be found within another string, returning true or false as appropriate.

Feb 5, 2025 · Learn how to use the JavaScript string includes () method to check if a string contains another substring, with practical examples and use cases.

In JavaScript, includes () is a string method that determines whether a substring is found in a string. Because the includes () method is a method of the String object, it must be invoked through a …