<!DOCTYPE html>
<html>
<body>
<img id="myImg" src="compman.gif" style="width:500px;height:98px;">
<p>In this example, the image's width is originally 107 pixels. We have used CSS to style the image to 500 pixels wide.</p>
<p>Click the button to display the original width of the image.</p>
<p><strong>Note:</strong> The naturalWidth property is not supported in Internet Explorer 8 and earlier.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myImg").naturalWidth;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>