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The includes() method returns true if a string contains a specified string. Otherwise it returns false. The includes() method is case sensitive.
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24 Νοε 2009 · const substring = "oo"; console.log(string.includes(substring)); // true. 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.indexOf, which returns -1 when a substring cannot be found: var string = "foo";
9 Αυγ 2023 · 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 appropriate.
24 Απρ 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 expressions, or 3rd-party library like Lodash.
7 Οκτ 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 includes() JavaScript method.
16 Μαΐ 2019 · There's two common ways to check whether a string contains a substring in JavaScript. The more modern way is the String#includes() function. const str = 'Arya Stark'; str.includes('Stark'); // true. str.includes('Snow'); // false. You can use String#includes() in all modern browsers except Internet Explorer.
5 Νοε 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 examples of the JavaScript string method called .includes().
