get item position in array javascript code example

Example 1: how to get the index of an array in javascript

search = (arr, item) => { return arr.indexOf(item); }

Example 2: get the location of an item in an array

console.log(scores.indexOf(10)); // 0
console.log(scores.indexOf(30)); // 2
console.log(scores.indexOf(50)); // -1
console.log(scores.indexOf(20)); // 1