The indexOf() method starts at a specified index and searches from left to right (from the given start postion to the end of the array). By default the search starts at the first element and ends …

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 …

Sep 8, 2011 · You can use the function to find index of a particular element as below, var index = functiontofindIndexByKeyValue(studentsArray, "name", "tanmay"); alert(index);

Mar 13, 2025 · The indexOf() method of Array instances returns the first index at which a given element can be found in the array, or -1 if it is not present.

The indexOf() method searches an array for an element value and returns its position. Note: The first item has position 0, the second item has position 1, and so on. Example

Jun 29, 2012 · There's now a great way of doing this called findIndex which takes a function that return true/false based on whether the array element matches (as always, check for browser …

The Array indexOf() method returns the index of the first matching element in an array or -1 if there is no matching element. Here’s the syntax of the indexOf() method: const index = array …

Nov 18, 2024 · indexOf () returns the first index of a specified value in an array, or -1 if the value is not found. findIndex () is used for finding the index of an element based on complex …

Sep 27, 2024 · This code demonstrates the use of the indexOf() method to find the index of a specific element (2) in an array (A). It returns the index of the first occurrence of the element in …

Feb 5, 2025 · A comprehensive guide to the JavaScript Array indexOf() method, covering its syntax, usage, and practical examples for finding the index of elements within an array.