javascript时间缀转时间字符串

1. 代码：

   /*
   @desc：时间缀转时间字符串
   @param time 时间缀，长度为10
   @return 时间字符串 格式为：2018-06-10 22:00:00
   */
   function timetostr(time){
   this.time = time
   /*
    @desc：内部方法，若数字小于10补0
    @param input 传入数值
    @return ret 格式化后的数值
    */
   this.parsetime = function(input){
       var ret
       if(input >= 0 && input < 10){
           ret = '0'+input
       }else{
           ret = input
       }
       return ret
   }
   /*
    @desc：主方法，获取转换后的时间
    @return ret 时间字符串，格式为：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
   }
   }

2. 测试：

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

3. 输出：

   2018-05-10 09:22:59