JSFiddle - React, Tailwind, and code Playground

HTML

<div id="arrVal"></div>

JavaScript

// array[0][0] will produce brian
// array[0][1] will produce james

// array[1][0] will produce kevin
// array[1][1] will produce haley

var array = [];
    array[0] = "brian,james,doug".split(",");
    array[1] = "kevin,haley,steph".split(",");
    
    document.getElementById("arrVal").innerHTML = array[1][1];