JS时间长转换为日期格式

timestampToTime:function(timestamp) {
    var date = new Date(timestamp * 1000);  
    var Y = date.getFullYear() + '-';
    var M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-';
    var D = date.getDate() + "\u00a0\u00a0\u00a0";

    var h = date.getHours() + ':';
    var m = date.getMinutes() + ':';
    var s = date.getSeconds();
    return Y+M+D+h+m+s;
}

//时间戳为10位需*1000，时间戳为13位的话不需乘1000