How vue uses the same component multiple times to make data Synchronize

different parent components refer to the same child component. Modify the value of the child component in one parent component, while the value of the child component in the other parent component is not modified
child component:
< group >

      <popup-picker :data="list" v-model="province" @on-show="onShow" @on-hide="onHide" @on-change="onChange" :columns="list.length"
        :show-name="true" value-text-align="left"></popup-picker>
    </group>

this component is used in both parent component An and parent component B. I changed the value of provice in component A, but the value of profile in component B did not change

Vue.js

Jun.28,2021

maybe the component has been uninstalled! You can't understand

because different component instances are generated and the data is independent of each other (why the data in the component configuration option should be a function rather than a direct object, just to avoid the data of the same component in different places interacting with each other).
according to the description of the subject, this situation is usually implemented by Vuex state management, which is very simple to understand.

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