find and findIndex

Locate the first matching item — or its index — in an array.

find returns the first matching element (or undefined). findIndex returns its index (or -1 if nothing matches).

Players


        

        

          
Result

          

        

      

      
Search the roster.

    


    

      
Important JavaScript

      
const players = [
  { id: 1, name: "Ava" },
  { id: 2, name: "Ben" },
  { id: 3, name: "Cara" }
];

const found = players.find((player) => player.id === 3);
// { id: 3, name: "Cara" }

const missing = players.find((player) => player.id === 99);
// undefined

const index = players.findIndex((player) => player.id === 3);
// 2

const notFound = players.findIndex((player) => player.id === 99);
// -1