简单的时间初始化yyyy-MM-dd HH:mm:ss 格式

    initDate(){
      let now = new Date()

      let y=now.getFullYear();
      let  m=now.getMonth() + 1 >9?now.getMonth() + 1 :"0"+(now.getMonth() + 1);
      let  d= now.getDate()>9?now.getDate() :"0"+now.getDate();
      let  h=now.getHours()>9?now.getHours() :"0"+now.getHours();
      let  i=now.getMinutes()>9?now.getMinutes() :"0"+now.getMinutes();
      let  s= now.getSeconds()>9?now.getSeconds() :"0"+now.getSeconds();
      
      return y+'-'+m+'-'+d+' '+h+':'+i+':'+s
    }