js 时间格式

<script type="text/javascript">

 window.onload = function() {

  varshow = document.getElementById("show");

  setInterval(function() {

   vartime = newDate();

   // 程序计时的月从0开始取值后+1

   varm = time.getMonth() + 1;

   vart = time.getFullYear() + "-"+ m + "-"

     + time.getDate() + " " + time.getHours() + ":"

     + time.getMinutes() + ":"+ time.getSeconds();

   show.innerHTML = t;

  }, 1000);

 };

</script>