根据月份区间值取出所有月份

getMonths:function(monthRange){
    let value = []
    if(monthRange){
        const [start,end] = monthRange
        if(start == end && start){
            value = [start]
        }else{
            let startDate = new Date(start+'-01')
            let endDate = new Date(end+'-01')
            const startYear = startDate.getFullYear()
            const startMonth = startDate.getMonth()
            const endYear = endDate.getFullYear()
            const endMonth = endDate.getMonth()
            if(startYear == endYear){
                const m = endMonth - startMonth - 1
                let arr = []
                let s = startMonth + 1
                for (let i = 0; i < m; i++) {
                    s++
                    s = s<10?'0'+s:s // 补0
                    arr = [...arr,startYear+'-'+ s]
                }
                value = [start,...arr,end]
            }else{
                const y = endYear - startYear
                const m = endMonth - startMonth - 1
                const totalMonth = 12 * y + m
                console.log(totalMonth)
                let arr = []
                let startDate = new Date(start+'-01')
                let endDate = new Date(end+'-01')
                for (let i = 0; i < totalMonth; i++) {
                    startDate.setMonth(startDate.getMonth()+1)
                    if(startDate.getTime() < endDate.getTime()){ // 比较时间大小
                        let s = startDate.getMonth()+1
                        s = s < 10 ? '0'+s : s // 补0
                        arr = [...arr,startDate.getFullYear() +'-'+ s]
                    }
                }
                value = [start,...arr,end]
            }
        }
        return value
    }
    return value
},