如何在uniapp中实现页面间的传参和回传

// 页面Auni.navigateTo({  url: '/pages/B/B?param1=123&param2=456'})// 页面BonLoad: function (options) {  console.log(options.param1) //输出123  console.log(options.param2) //输出456}

// 父组件<template><child-component :param1="param1"></child-component></template><script>export default {  data() {    return {      param1: '123',      param2: '456'    }  }}</script>// 子组件<template><view>{{ $props.param1 }}</view><view>{{ $props.param2 }}</view></template>

// 页面A<template><button>传递参数</button></template><script>export default {  methods: {    sendParam() {      this.$store.commit('SET_PARAM', '参数值')      uni.navigateTo({        url: '/pages/B/B'      })    }  }}</script>// 页面BonLoad: function () {  console.log(this.$store.getters.param) //输出参数值}// storeimport Vue from 'vue'import Vuex from 'vuex'Vue.use(Vuex)const store = new Vuex.Store({  state: {    param: ''  },  mutations: {    SET_PARAM(state, value) {      state.param = value    }  },  getters: {    param: state =&gt; state.param  }})export default store

// 页面Auni.navigateTo({  url: '/pages/B/B'})// 页面Buni.navigateBack({  delta: 1,  success: function () {    uni.getOpenerEventChannel().emit('acceptDataFromB', {data: '回传的参数'})  }})// 页面AonLoad: function () {  const eventChannel = this.getOpenerEventChannel()  eventChannel.on('acceptDataFromB', function (data) {    console.log(data) //输出{data: '回传的参数'}  })}

// 页面A// main.jsVue.prototype.$eventBus = new Vue()// 页面Bthis.$eventBus.$emit('acceptDataFromB', {data: '回传的参数'})uni.navigateBack({  delta: 1})// 页面Athis.$eventBus.$on('acceptDataFromB', function (data) {  console.log(data) //输出{data: '回传的参数'}})