![]() ![]() ![]() See the tutorial on JavaScript ES6 Features to learn more about arrow function notation. The some() method is supported in all major browsers, such as Chrome, Firefox, IE (9 and above), etc. Likewise, two distinct arrays are not equal even if they have the same values in the same order. Because, two distinct objects are not equal even if they look the same (i.e. Read Next: Check if a string contains a substring in JavaScript to learn about other JavaScript functions that can be used to check the presence of a substring in a string.Var persons = [) it will not work (always return -1). It feature-detects the support for includes() and only loads the polyfill if the browser does not support the includes() method. Here is a simple example that uses the includes() method to check if a word is present in a sentence: const sentence = 'The JavaScript is a client-side language.' const word = 'language' Ĭonsole. If not specified, the search will start from zero.Ī Boolean value true indicating the presence of the given substring or false indicating the absence. position - The index to start the search from.searchString - The substring to search for within this string.The includes() method takes two arguments: The includes() method is case-sensitive, which means it acts differently to both uppercase and lowercase characters. The includes() method returns true if a string contains a specified string. This method returns true if the string contains the given characters, otherwise, it returns false. The includes() method was introduced in E6/ES2015. ![]() It determines whether a string contains the given substring or not. In JavaScript, the includes() method is used to check the presence of a substring. ![]()
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