首页 > 解决方案 > Vue 收到了一个组件,它是一个响应式对象

问题描述

我需要解决的问题:我正在写一个基于VueJS3的小vue-app。

我有很多不同的侧边栏,我需要防止同时打开多个侧边栏的情况。

为了存档这个,我正在关注这篇文章

现在我遇到了一个问题:

Vue 收到了一个组件,它是一个响应式对象。这可能会导致不必要的性能开销,应通过使用markRaw或使用shallowRef而不是标记组件来避免ref。(6)

这是我的代码:

SlideOvers.vue

<template>
    <component :is="component" :component="component" v-if="open"/>
</template>
<script>

export default {
    name: 'SlideOvers',
    computed: {
        component() {
            return this.$store.state.slideovers.sidebarComponent
        },
        open () {
            return this.$store.state.slideovers.sidebarOpen
        },
    },
}
</script>

UserSlideOver.vue

<template>
    <div>test</div>
</template>
<script>

export default {
    name: 'UserSlideOver',
    components: {},
    computed: {
        open () {
            return this.$store.state.slideovers.sidebarOpen
        },
        component () {
            return this.$store.state.slideovers.sidebarComponent
        }
    },
}
</script>

slideovers.js(vuex商店)

import * as types from '../mutation-types'

const state = {
    sidebarOpen: false,
    sidebarComponent: null
}

const getters = {
    sidebarOpen: state => state.sidebarOpen,
    sidebarComponent: state => state.sidebarComponent
}

const actions = {
    toggleSidebar ({commit, state}, component) {
        commit (types.TOGGLE_SIDEBAR)
        commit (types.SET_SIDEBAR_COMPONENT, component)
    },
    closeSidebar ({commit, state}, component) {
        commit (types.CLOSE_SIDEBAR)
        commit (types.SET_SIDEBAR_COMPONENT, component)
    }
}

const mutations = {
    [types.TOGGLE_SIDEBAR] (state) {
        state.sidebarOpen = !state.sidebarOpen
    },

    [types.CLOSE_SIDEBAR] (state) {
        state.sidebarOpen = false
    },

    [types.SET_SIDEBAR_COMPONENT] (state, component) {
        state.sidebarComponent = component
    }
}

export default {
    state,
    getters,
    actions,
    mutations
}

App.vue

<template>
    <SlideOvers/>
    <router-view ref="routerView"/>
</template>

<script>
import SlideOvers from "./SlideOvers";

export default {
    name: 'app',
    components: {SlideOvers},
};
</script>

这就是我尝试切换一个幻灯片的方式:

<template>
  <router-link
      v-slot="{ href, navigate }"
      to="/">
    <a :href="href"
       @click="$store.dispatch ('toggleSidebar', userslideover)">
        Test
    </a>
  </router-link>
</template>
<script>
import {defineAsyncComponent} from "vue";

export default {
  components: {
  },
  data() {
    return {
      userslideover: defineAsyncComponent(() =>
          import('../../UserSlideOver')
      ),
    };
  },
};
</script>

标签: vue.jsvue-componentvuexvuejs3

解决方案


按照警告的建议,使用markRawon 的值usersslideover来解决警告:

export default {
  data() {
    return {
      userslideover: markRaw(defineAsyncComponent(() => import('../../UserSlideOver.vue') )),
    }
  }
}

演示


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