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

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 …

Jul 11, 2025 · Example 1: The code checks if the string "Geeks" is present in the string "Welcome to GeeksforGeeks.". It then logs the result, which is true, since "Geeks" is indeed present in …

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

The JavaScript String includes () method searches for the part of the string and determines whether the specified string is found in the original string. It returns a boolean value 'true' if the …

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.

May 21, 2025 · When working with strings in JavaScript, performance matters – especially when dealing with large texts or frequent operations. Let‘s look at how includes() performs compared …

In this article, you will learn about the includes () method of String with the help of examples.

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.

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 …