el-date-picker设置默认值

这种如何设置默认值

   import * as dayjs from "dayjs";created() {const firstDay = dayjs().startOf('month').format('DD/MM/YYYY');const today = dayjs().format('DD/MM/YYYY');console.log("firstDay===",firstDay);console.log("today===",today);this.data[0]=firstDay;this.data[1]=today;}