JSFiddle - React, Tailwind, and code Playground

HTML

<button id="decre">
prev
</button>

<button id="incre">
next
</button>

JavaScript

var tab = ["one", "two", "three", "four", "five"];
var btnPlus = document.getElementById('incre');
var btnMinus = document.getElementById('decre');
var counter = 0;

function next(){

    if(counter < tab.length){
      counter++;
    }
    if(counter == tab.length){
    	counter = 0;
    }
    console.log(counter + ' ' + tab[counter]);
}

function prev(){

		if(counter > 0){
    	counter--;
    }
    if(counter < 0){
    	counter = tab.length;
    }
     console.log(counter + ' ' + tab[counter]);
}

btnPlus.addEventListener('click', next);
btnMinus.addEventListener('click', prev);