title: How to Change Image on click and get back again on clicking
body: <p>I am Building a Javascript app</p>
  
  <p>Now I want to have a image button that I have given already now I want to change the image to another image on clicking current image.</p>
  
  <p>When i click again I want to get back the old image  please any one help me by giving a coding example pls..</p>