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Just do the following... myArray.findIndex(element => element.includes("substring")) findIndex () is an ES6 higher order method that iterates through the elements of an array and returns the index of the first element that matches some criteria (provided as a function).
9 sie 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.
28 cze 2022 · You can use the includes() method in JavaScript to check if an item exists in an array. You can also use it to check if a substring exists within a string. It returns true if the item is found in the array/string and false if the item doesn't exist.
4 cze 2024 · Description. substring() extracts characters from indexStart up to but not including indexEnd. In particular: If indexEnd is omitted, substring() extracts characters to the end of the string. If indexStart is equal to indexEnd, substring() returns an empty string.
12 lip 2024 · Example: Using RegExp.test() provides a versatile and efficient way to check if an array of strings contains a substring in JavaScript. It’s particularly useful when you need to handle case insensitivity or more complex substring search patterns.
25 lip 2024 · The first is the charAt () method: js. "cat".charAt (1); // gives value "a" The other way is to treat the string as an array-like object, where individual characters correspond to a numerical index: js. "cat" [1]; // gives value "a"
17 wrz 2012 · var array = [ { name:"string 1", value:"this", other: "that" }, { name:"string 2", value:"this", other: "that" } ]; You can use the following function to search for items. const search = what => array.find(element => element.name === what); And you can check whether the item was found or not.
