vue3兄弟组件传值

main.ts

import mitt from 'mitt'

const vueEvent = mitt()

 

app.config.globalProperties.vueEvent = vueEvent

 

 

 

import {getCurrentInstance} from 'vue'
 const vueEvent = getCurrentInstance()?.appContext.config.globalProperties.vueEvent
//发送
vueEvent.emit('handleCurrentNo', 1)
//接收
   onMounted(() => {
      vueEvent.on('handleCurrentNo', (val: number) => {
        state.currentNo = val
      })
    })
    onUnmounted(() => {
      vueEvent.off('handleCurrentNo')
    })