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

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 …

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 …

A sample regex pattern test you can use to find out if the string contains a character '@': /(@[A-Za-z])\w+/.test(str_text)

The includes() method determines whether one string may be found within another string, returning true or false as appropriate. Syntax :-string.includes(searchString[, position]) …

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. But how does it work exactly? In this article, I will walk you through a few code …

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 …

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

Jan 7, 2021 · You can check if a JavaScript string contains a character or phrase using the includes() method, indexOf(), or a regular expression. includes() is the most common method …