我想从vuejs传递一个变量来启动

<template>
  <ChildComponent :childProp="parentData" />
</template>

<script>
import ChildComponent from './ChildComponent.vue';

export default {
  components: {
    ChildComponent
  },
  data() {
    return {
      parentData: 'Hello from parent'
    };
  }
};
</script>

<template>
  <div>{{ childProp }}</div>
</template>

<script>
export default {
  props: {
    childProp: String
  }
};
</script>

<template>
  <button @click="sendToParent">Send to Parent</button>
</template>

<script>
export default {
  methods: {
    sendToParent() {
      this.$emit('child-event', 'Hello from child');
    }
  }
};
</script>

<template>
  <ChildComponent @child-event="handleChildEvent" />
</template>

<script>
import ChildComponent from './ChildComponent.vue';

export default {
  components: {
    ChildComponent
  },
  methods: {
    handleChildEvent(data) {
      console.log(data); // 'Hello from child'
    }
  }
};
</script>

// store.js
import { createStore } from 'vuex';

export default createStore({
  state() {
    return {
      sharedData: 'Shared data'
    };
  },
  mutations: {
    updateSharedData(state, payload) {
      state.sharedData = payload;
    }
  }
});

<script>
export default {
  provide() {
    return {
      sharedData: 'Shared data'
    };
  }
};
</script>

<script>
export default {
  inject: ['sharedData'],
  mounted() {
    console.log(this.sharedData); // 'Shared data'
  }
};
</script>

// Vue 3.x
this.someObject.newProperty = 'New value'; // 直接修改响应式对象