js 获得系统当前时间

<script language='javascript'>

   function convertFullDateToString()
   {
  
     var date = new Date();
     var DATE_DELIMITER="/";
     var strDate = "";
     strDate = date.getFullYear() + DATE_DELIMITER +
               (date.getMonth() + 1) + DATE_DELIMITER +
               date.getDate();
     alert(strDate);
   }
</script>