![]() The general syntax for the includes() method looks something similar to this: string.includes(substring, index) The JavaScript includes() method was introduced with ES6, and it is the most common and modern way of checking if a string contains a specific character or a series of characters. What Is The includes() Method in JavaScript? includes() Method Syntax Breakdown How to make a case-insensitive check with the includes() and indexOf() methods.How to check if a string contains a specific substring using the indexOf() method.Syntax breakdown of the indexOf() method in JavaScript.How to check if a string contains a specific substring using the includes() method.Syntax breakdown of the includes() method in JavaScript.Here is what we will cover in more detail: How to use the built-in indexOf() JavaScript method.How to use the built-in includes() JavaScript method.In this article, you will learn two different ways you can check if a string contains a substring using JavaScript methods. Thankfully, there are a few quick ways to achieve this with JavaScript. ![]() Specifically, you might need to check whether a word contains a specific character or a specific set of characters. A substring is a string inside another string. When you're working with a JavaScript program, you might need to check whether a string contains a substring.
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