/*
@desc：時間綴轉時間字符串
@param time 時間綴，長度為10
@return 時間字符串 格式為：2018-06-10 22:00:00
*/
function timetostr(time){
this.time = time
/*
 @desc：內部方法，若數字小於10補0
 @param input 傳入數值
 @return ret 格式化後的數值
 */
this.parsetime = function(input){
    var ret
    if(input >= 0 && input < 10){
        ret = ‘0‘+input
    }else{
        ret = input
    }
    return ret
}
/*
 @desc：主方法，獲取轉換後的時間
 @return ret 時間字符串，格式為：2018-06-10 22:00:00
 */
this.get = function(){
    var time = (this.time)?(this.time):(Math.round(new Date().getTime()/1000))
    var date = new Date(time*1000)
    var year = this.parsetime(date.getFullYear())
    var month = this.parsetime(date.getMonth())
    var day = this.parsetime(date.getDate())
    var hour = this.parsetime(date.getHours())
    var minute = this.parsetime(date.getMinutes())
    var second = this.parsetime(date.getSeconds())
    var ret = year+‘-‘+month+‘-‘+day+‘ ‘+hour+‘:‘+minute+‘:‘+second
    return ret
}
}
 

var timetostr = new timetostr(1528593779)
var ret = timetostr.get()
console.log(ret)

2018-05-10 09:22:59