amonthpicker 禁止当前完后月份，禁止当前往前推2月份 Jim

<template>
    <div>
        <a-month-picker v-model="monthPicker" :disabled-date="disabledDate" placeholder="选择月份" @change="onChange" />
    </div>
</template>

<script>
import moment from 'moment'
export default {
    name: 'Fullcalendar',

    data () {
        let that = this
        return {
            monthPicker: '',
            dateFormat: 'YYYY-MMD'
        }
    },
    mounted () {
　　　　this.rangeFC()
    },
    methods: {
        moment,
        rangeFC () {
            this.monthPicker = ''
            this.monthPicker = moment(this.getCurrentData(), this.dateFormat)
            this.$parent.onMonthPick(this.monthPicker)
        },
        getCurrentData () {
            let time = new Date().toLocaleDateString()
            return time
        },
        onChange (val) {
            let A = moment(val).format('YYYY-MM')
            if (A === 'Invalid date') {
                this.rangeFC()
            } else {
                this.monthPicker = moment(val).format('YYYY-MM')
            }
        },
        disabledDate (current) {
            const date = new Date()
            let month = date.getMonth() + 1
            // 禁止当前月往前推2月且后面月份不可选
            return current.month() < month - 3 || current > moment().endOf('day')
        },
        beforeDestroy () {}
    }
}
</script>

<style>
</style>