js时间戳怎么转成日期格式

<script>     
function getLocalTime(nS) {     
   return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/,' ');     
}     
alert(getLocalTime(1293072805));     
</script> 

<script>     
function getLocalTime(nS) {     
    return new Date(parseInt(nS) * 1000).toLocaleString().substr(0,17)}     
alert(getLocalTime(1293072805));     
</script> 

 <script>     
    function getLocalTime(nS) {     
       return new Date(parseInt(nS) * 1000).toLocaleString().replace(/年|月/g, "-").replace(/日/g, " ");      
    }     
    alert(getLocalTime(1177824835));     
    </script>  

function   formatDate(now)   {     
              var   year=now.getYear();     
              var   month=now.getMonth()+1;     
              var   date=now.getDate();     
              var   hour=now.getHours();     
              var   minute=now.getMinutes();     
              var   second=now.getSeconds();     
              return   year+"-"+month+"-"+date+"   "+hour+":"+minute+":"+second;     
              }     
         
              var   d=new   Date(1230999938);     
              alert(formatDate(d)); 

replace("/Date(","").replace(")/","");