JS将日期转换为英文格式输出

<script language="javascript">
var dt = new Date();
var m=new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Spt","Oct","Nov","Dec");
var w=new Array("Monday","Tuseday","Wednesday","Thursday","Friday","Saturday","Sunday");
var d=new Array("st","nd","rd","th");
mn=dt.getMonth();
wn=dt.getDay();
dn=dt.getDate();
var dns;
if(((dn%10)<1) ||((dn%10)>3)){
dns=d[3];
}
else
{
dns=d[(dn%10)-1];
if((dn==11)||(dn==12)){
dns=d[3];
}
}
document.write(m[mn]+" "+dn+dns+" " +w[wn-1]+" "+dt.getFullYear());
</script>