JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">

  <img id="img1" src="http://www.html.am/images/samples/remarkables_queenstown_new_zealand-300x225.jpg" />
  <img id="img2" src="http://www.primeliving.at/wp-content/uploads/2016/12/terrasse_ref38_klein_640x480-300x225.jpg" style="display: none" />
 
</div>

<button onClick="togglethis()">
Toggle images!
</button>

JavaScript

var toggler=true;

function togglethis(){
	if(toggler){
	document.getElementById("img2").style.display="inherit";
	document.getElementById("img1").style.display="none";
  
  }else{
	document.getElementById("img1").style.display="inherit";
	document.getElementById("img2").style.display="none";
  
  }
toggler=!toggler;
  
}