JSFiddle - React, Tailwind, and code Playground

HTML

<a>
      <img id="passo1" class="passo" src="http://img2.wikia.nocookie.net/__cb20140902050035/pokemon/images/b/b1/025Pikachu_XY_anime_3.png" style="float:left"/>
  </a>

JavaScript

teste = document.querySelector("#passo1").addEventListener('click', function(){
this.src = "http://4.bp.blogspot.com/_sPNF_uQkyus/TCH3cALsCYI/AAAAAAAAJDc/gfadAWf_gK4/s1600/Raichu.png";});