JSFiddle - React, Tailwind, and code Playground

by Edward Tanguay

HTML

<div id="content"></div>

JavaScript

const customers = [
	{
  	id: 1,
    name: "Joe",
    selected: false
  },
	{
  	id: 2,
    name: "Hank",
    selected: false
  },
	{
  	id: 3,
    name: "Wanda",
    selected: false
  }
];

const index = customers.findIndex(function(customer) {
	return customer.id == 2;
});

const html = "Index of found item is " + index;

document.getElementById('content').innerHTML = html;