js 时间戳转为日期格式

function FormatDate(timestamp) {
        var date = new Date(timestamp * 1000);//时间戳为10位需*1000，时间戳为13位的话不需乘1000
       var Year = date.getFullYear() + '-';
       var Mouth = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-';
       var Date = (date.getDate() < 10 ? '0'+date.getDate() : date.getDate()) + ' ';
       var Hours = (date.getHours() < 10 ? '0'+date.getHours() : date.getHours()) + ':';
       var Minutes = (date.getMinutes() < 10 ? '0'+date.getMinutes() : date.getMinutes()) + ':';
       var Seconds = (date.getSeconds() < 10 ? '0'+date.getSeconds() : date.getSeconds());
        return Year +Mouth +Date +Hours +Minutes +Seconds ;
    }