Jul 3, 2018 · How can I get the index of an element in Arrow Function? Here is my code: this.data.forEach(element => { //console.log(index); //I want to get this index …

Feb 2, 2024 · The findIndex() method returns the element’s index that satisfies a testing function or -1 if no element passed the test. The findIndex() is best for arrays with non-primitive types …

Jan 4, 2024 · The method findIndex () returns the index of the first element in an array that satisfies the provided testing function. If no element satisfies the testing function, -1 is returned.

The first example uses a regular function, and the second example uses an arrow function. The result shows that the first example returns two different objects (window and button), and the …

Mar 13, 2025 · If you need the index of the found element in the array, use findIndex(). If you need to find the index of a value, use indexOf(). (It's similar to findIndex(), but checks each …

May 6, 2019 · It should take a userId parameter and use the Array .find function on the users collection to find and return the selected user object. Your .find call should take an inline arrow …

Dec 30, 2022 · The find() method allows you to check for the presence of a certain value in an array, in cases when you do not know its index. At the same time, it accepts various conditions …

Aug 10, 2023 · By using arrow functions with implicit return, default exports and imports, Array.find(), Array.findIndex(), and async/await, you can write more concise and expressive …

The findIndex method in JavaScript is used to get the index of the first element in an array that satisfies a provided testing function. If no elements satisfy the testing function, it returns -1, …

The findIndex() method executes a function for each array element. The findIndex() method returns the index (position) of the first element that passes a test. The findIndex() method …