<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div class="background-wrapper">
    <img class="background" src="https://picsum.photos/300/100?1"/>
  </div>
</body>
</html>
let getImg = document.querySelector('.background');
let backgroundArrayImg = [
   'https://picsum.photos/300/100?1', 'https://picsum.photos/300/100?2', 'https://picsum.photos/300/100?3'
];
let count = 1;
getImg.addEventListener('click', () => {
  if(count === backgroundArrayImg.length){
    count = 0;
  }
  else{
    getImg.src = backgroundArrayImg[count];
    count++;
  }
})