The string includes() method in javascript returns boolean values only. Return Value of String includes() in Javascript By default, the value of the starting index is zero. Name_of_the_string.includes(search_string) name_of_the_string.includes(search_string, starting_index) Parameters of String Includes() in Javascriptįor the parameter of string includes() function in javascript, we use the "set of characters"(string) that we want to search and the second parameter is optional that is, the starting index (the index from where the search will begin in the original string).
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