javascript转时间戳为日期格式

date=(new Date()).getTime();  //这样可以得到一串数字时间戳

 function formatDate(date) {
     var date=new Date(date*1000);
      var year = date.getFullYear()
      var month = date.getMonth() + 1
      var day = date.getDate()
      var hour = date.getHours()
      var minute = date.getMinutes()
      var second = date.getSeconds()
      //  return year+"-"+month+"-"+date+" "+hour+":"+minute+":"+second;
      return (
        year +
        '-' +
        (String(month).length > 1 ? month : '0' + month) +
        '-' +
        (String(day).length > 1 ? day : '0' + day) +
        ' ' +
        (String(hour).length > 1 ? hour : '0' + hour) +
        ':' +
        (String(minute).length > 1 ? minute : '0' + minute) +
        ':' +
        (String(second).length > 1 ? second : '0' + second)
      )
    }