methods : { getRangeDate ( ranges )  { let  nowDays =  new  Date ( ) ; let  getYear =  nowDays. getFullYear ( ) ; let  getMonth =  nowDays. getMonth ( )  +  1 ; let  getDate =  nowDays. getDate ( ) ; let  nd =  new  Date ( ) ; nd =  nd. valueOf ( ) ; nd =  nd -  ranges *  24  *  60  *  60  *  1000 ; nd =  new  Date ( nd) ; let  lastYear =  nd. getFullYear ( ) ; let  lastMonth =  nd. getMonth ( )  +  1 ; let  lastDate =  nd. getDate ( ) ; if  ( getMonth ===  0 )  { getMonth =  '12' ; getYear =  new  Date ( ) . getFullYear ( )  -  1 ; }  else  { getYear =  new  Date ( ) . getFullYear ( ) ; } if  ( getMonth <  10 )  { getMonth =  '0'  +  getMonth; } if  ( getDate <  10 )  { getDate =  '0'  +  getDate; } if  ( lastMonth <  10 )  { lastMonth =  '0'  +  lastMonth; } if  ( lastDate <  10 )  { lastDate =  '0'  +  lastDate; } let  nowTime =  getYear +  ''  +  getMonth +  ''  +  getDate; console. log ( '当前日期' ,  getYear,  getMonth,  getDate) ; let  lastTime =  '' ; lastTime =  lastYear +  ''  +  lastMonth +  ''  +  lastDate; console. log ( '近7天' ,  lastTime) ; let  doubleTime =  { nowTime :  nowTime, lastTime :  lastTime, } ; return  doubleTime; } , 
isOneYear ( )  { let  year =  new  Date ( ) . getFullYear ( ) ; let  lastYear =  new  Date ( ) . getFullYear ( )  -  1 ; let  month =  new  Date ( ) . getMonth ( )  +  1 ; let  getDate =  new  Date ( ) . getDate ( ) ; if  ( month <  10 )  { month =  '0'  +  month; } if  ( getDate <  10 )  { getDate =  '0'  +  getDate; } const  nowDate = year. toString ( )  +  '/'  +  month. toString ( )  +  '/'  +  getDate. toString ( ) ; let  lastDate = lastYear. toString ( )  +  '/'  +  month. toString ( )  +  '/'  +  getDate. toString ( ) ; console. log ( 'isOneYear' ,  nowDate,  lastDate) ; let  nowTime =  new  Date ( nowDate) . getTime ( ) ; let  lastTime =  new  Date ( lastDate) . getTime ( ) ; let  doubleTime =  { nowTime :  nowTime, lastTime :  lastTime, } ; return  doubleTime; } , 
} 
created ( ) { this . getRangeDate ( 7 ) ; this . isOneYear ( ) ; 
}