Find Index In Javascript

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find index in javascript how to use js inbuilt methods

Find Index In Javascript How To Use JS Inbuilt Methods

The findIndex method returns the index of the first element in the array that satisfies the provided testing function Otherwise 1 is returned var fooArray 5 10 15 20 25 console log fooArray findIndex num return num 5 expected output 1 Find an index by object property To find an index by object property ES6 added a new method called findIndex () to the Array.prototype, which allows you to find the first element in an array that satisfies a provided testing function. The findIndex () method returns the index of the element that satisfies a testing function or -1 if no element passed the test. The following illustrates the syntax of the ...

How to get the index from for of loop with javascript

How To Get The Index From For of Loop With JavaScript

Find Index In JavascriptIn this tutorial, you will learn about the JavaScript Array findIndex() method with the help of examples. The findIndex() method returns the index of the first array element that satisfies the provided test function or else returns -1. ... In the above example, we have used the findIndex() method to find the index of the first even number in ... Array prototype findIndex The findIndex method of Array instances returns the index of the first element in an array that satisfies the provided testing function If no elements satisfy the testing function 1 is returned See also the find method which returns the first element that satisfies the testing function rather than its