// 定时刷新
const intervalUpdate=  {
    data: function () {
        return {
            intervalUpdateTimer:null
        }
    },
    beforeDestroy() {
        console.log('销毁之前 清空定时器')
        if( this.intervalUpdateTimer) {
            window.clearInterval(this.intervalUpdateTimer)
            this.intervalUpdateTimer = null
        }
    },
    methods:{
        updateInterval: function (cn,time=10000) {
            window.clearInterval(this.intervalUpdateTimer)
            this.intervalUpdateTimer = null
            this.intervalUpdateTimer = window.setInterval(cn,time)
        }
    }

}
export default intervalUpdate