JSFiddle - React, Tailwind, and code Playground

HTML

<img src="http://i1054.photobucket.com/albums/s499/vadimzbanok/1379.gif" alt="" class="transition opacity" width="100" onclick="nextQ()" />

JavaScript

var prevQuestion = 0;
var currentQuestion = 1;

function nextQ(id) {
 
    prevQuestion++;
    currentQuestion++;    

    alert(currentQuestion);
}