JavaScript String includes () Method - W3Schools
Description The includes () method returns true if a string contains a specified string. Otherwise it returns false. The includes () …
String.prototype.includes () - JavaScript | MDN
Jul 10, 2025 · Thrown if searchString is a regex. This method lets you determine whether or not a string includes another string. The …
How to check whether a string contains a substring in JavaScript ...
Nov 24, 2009 · Usually I would expect a String.contains () method, but there doesn't seem to be one. What is a reasonable way to …
JavaScript contains () Method
In this tutorial, you will learn how to use the JavaScript contains () method to check if a node is a descendant of a given node.
JavaScript String includes() Method - GeeksforGeeks
Jun 1, 2026 · The includes () method is used to check whether a string contains a specific value. It returns a boolean result based on …
HTML DOM Element contains () Method - W3Schools
Description The contains () method returns true if a node is a descendant of a node. The contains () method returns false if not.
JavaScript String includes () Method
In this tutorial, you will learn how to use the JavaScript String includes () method to check if a string contains a substring.
JavaScript - How To Check Whether a String Contains a Substring ...
Jul 23, 2025 · The includes () method is the most simple and modern way to check if a string contains a specific substring. It returns …
Node: contains () method - Web APIs | MDN - MDN Web Docs
Jun 24, 2025 · The contains () method of the Node interface returns a boolean value indicating whether a node is a descendant of a …
JavaScript String Contains – How to use JS .includes ()
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 …