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

Mar 13, 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 …

Nov 24, 2009 · String.prototype.includes is case-sensitive and is not supported by Internet Explorer without a polyfill. In ECMAScript 5 or older environments, use …

ES6 contains inbuilt method (includes) in String's prototype, which can be used to check if string contains another string or not. var str = 'To be, or not to be, that is the question.'; Following …

Jan 10, 2025 · The includes() method returns true if a string contains a specified string. Otherwise, it returns false. Note: The includes() method is case sensitive i.e. it will treat the …

Apr 10, 2025 · Strings are useful for holding data that can be represented in text form. Some of the most-used operations on strings are to check their length, to build and concatenate them …

Oct 7, 2022 · In this article, you will learn two different ways you can check if a string contains a substring using JavaScript methods. Specifically, you will learn: How to use the built-in …

Nov 5, 2021 · In JavaScript you can use the .includes() method to see if one string is found in another. Here is the basic syntax for the .includes() method. If the search-string is found then it …

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

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 …