<html>
<body onresize="myFunction()">
<p>Try to resize the browser window to display the windows height and width.</p>
<p id="demo"></p>
<p><strong>Note:</strong> this example will not work properly in IE8 and earlier. IE8 and earlier do not support the outerWidth/outerHeight propery of the window object.</p>
<script>
function myFunction() {
var w = window.outerWidth;
var h = window.outerHeight;
var txt = "Window size: width=" + w + ", height=" + h;
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
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</html>