// 获取本月时间
    getCurrentMonth(value){
        // if(value==''|| value==undefined){
        //     return value
        // }
        // if(value.length==10){
        //     value = value *1000
        // }
        // let nowdays = new Date(value)
        let nowdays = new Date()
        let year = nowdays.getFullYear()
        let month = nowdays.getMonth()+1
      
        if (month < 10) {
            month = '0' + month
        }
    
        let yDate = new Date(year, month, 0)
    
        let startDateTime = year + '-' + month + '-01' //上个月第一天
        let endDateTime = year + '-' + month + '-' + yDate.getDate() //上个月最后一天
    
        return {
            startDateTime:startDateTime,
            endDateTime:endDateTime
        }
    }