为什么设置年份 无输出结果
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>获得年份 </title>
<script type="text/javascript">
var mydate=new Date();
// document.write(mydate+"<br>");
// document.write(mydate.getFullYear()+"<br>");
mydate.setFullyear(81);
document.write(mydate+"<br>");
// var mydate=new Date();
// var myyear= ;
// document.write("年份:"+myyear);
</script>
</head>
<body>
</body>
</html>
