<!DOCTYPE html>
<html lang="en-US">
<head>
<link rel="prefetch" href="horse.jpg" as="image">
</head>
<body>
<div id="myImg"></div>
<button onclick="myFunction()">Click to get</button>
<script>
function myFunction(){
document.getElementById("myImg").innerHTML="<img src='/horse.jpg' height='250px' width='250px'>"
}
</script> </body>
</html>