JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <a href="javascript:;" onclick="previous()">Anterior</a>
  <span id="view">a</span>
  <a href="javascript:;" onclick="next()">Próximo</a>
</div>

JavaScript

var photos = ['a','b','c','d','e','f','g','h','i','j'];
var total = photos.length;
var page = 1;

function next() {
	page++;
  if (page > total){
  	page = total;
  }
  view();
}

function previous() {
	page--;
  if (page < 1){
  	page = 1;
  }
  view();
}

function view() {
	document.getElementById("view").innerHTML = photos[page - 1];
}

view();