find index of list item javascript code example
Example 1: js find index in list
let myList = ['foo', 'bar', 'qux'];
myList.indexOf('bar'); // 1
Example 2: get index of element in array javascript
var scores = [10, 20, 30, 10, 40, 20];
console.log(scores.indexOf(30)); // 2
console.log(scores.indexOf(50)); // -1