JavaScript String includes() Method - W3Schools
The includes() method returns true if a string contains a specified string. Otherwise it returns false. The includes() method is case sensitive.
How to check whether a string contains a substring in JavaScript ...
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 …
String.prototype.includes() - JavaScript | MDN - MDN Web Docs
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 …
How to Check if a String Contains a Substring in JavaScript
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 …
JavaScript String includes() Method - GeeksforGeeks
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 …
How to check if a String contains Specified String in JavaScript?
JavaScript – Check if String contains Specified String. To check if a string str1 contains a specified string str2 in JavaScript, call includes() method on the string str1, and pass the …
JavaScript String Contains: Step-By-Step Guide - Career Karma
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 …
javascript - How do I check if string contains substring ... - Stack ...
The includes() method determines whether one string may be found within another string, returning true or false as appropriate. Syntax :-string.includes(searchString[, position]) …
How to check if a string contains a substring in JavaScript
Apr 24, 2019 · There are multiple ways to check if a string contains a substring in JavaScript. You can use either String.includes() , String.indexOf() , String.search() , String.match() , regular …
Check if String Contains a Specific Word or Substring in JavaScript
May 20, 2022 · Using String.indexOf() to Check if String Contains Substring. The fastest way to check if a string contains a particular word or substring is with the help of String.indexOf() …