SO - 15788472

by Arun P Johny

HTML

<div id="x"></div>

JavaScript

var s=['John', 'Alex', 'Mark'];
var x = document.getElementById('x');

function display(i){
    if(i >= s.length){
        i = 0;
    }
    
    x.innerHTML = s[i];
    setTimeout(function(){
       display(i + 1)
    }, 2000)
}

display(0)