【form】
<html>
<body>
<script language="JavaScript">
function getEncoding(){
var encodingType = document.form1.encoding;
console.log(encodingType);
}
</script>
<form name="form1" action="post" enctype="application/x-www-form-urlencoded">
<input type="button" value="Get Encoding" onClick='getEncoding()'>
</form>
</body>
</html>
