Image src inside Dom

<!DOCTYPE html>
<html lang="en">
<head>
<title>Image src inside Dom</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
</head>
<body>


<iframe style='display:none;' id='box' src='https://gradely-oceans.000webhostapp.com/anime.png'></iframe>


<img id='image'/>


<script>

image.src=box.src;
image.style.width='500px';


</script>
</body>
</html>