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 …

Sep 1, 2021 · index: This is the index position of the currentItem inside the array. array: This represents the target array along with all its items. In the following examples, I will …

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.

Mar 13, 2025 · If you need to find the index of a value, use indexOf(). (It's similar to findIndex() , but checks each element for equality with the value instead of using a testing function.) If you …

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 …

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 …

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 …

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, …

To begin with the most square definition: An arrow function is a conciser way to define an anonymous function, with slightly different semantics as well. Arrow functions are also used to …

JavaScript find index. Like the JavaScript find(), the findIndex() processes the array until it finds the match. The difference is findIndex() returns array index instead of the value. This example …