<!DOCTYPE html>
<html>
<body>
<p>Click the button to check the encoding of this document</p>
<button onclick="myFunction()">Try it</button>
<p><strong>Note:</strong> Internet explorer 8 and earlier does not support the inputEncoding property.</p>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.inputEncoding;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>