在Vue中将对象属性与子组件同步

<template>
  <div>
    <child-component :data="obj"></child-component>
  </div>
</template>

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

export default {
  data() {
    return {
      obj: {
        name: 'John',
        age: 25
      }
    };
  },
  components: {
    ChildComponent
  }
};
</script>

<template>
  <div>
    <input v-model="data.name" type="text">
    <input v-model="data.age" type="number">
  </div>
</template>

<script>
export default {
  props: {
    data: {
      type: Object,
      required: true
    }
  }
};
</script>

<template>
  <div>
    <child-component v-model="obj"></child-component>
  </div>
</template>

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

export default {
  data() {
    return {
      obj: {
        name: 'John',
        age: 25
      }
    };
  },
  components: {
    ChildComponent
  }
};
</script>

<template>
  <div>
    <input v-model="innerValue.name" type="text">
    <input v-model="innerValue.age" type="number">
  </div>
</template>

<script>
export default {
  model: {
    prop: 'value',
    event: 'input'
  },
  props: {
    value: {
      type: Object,
      required: true
    }
  },
  computed: {
    innerValue: {
      get() {
        return this.value;
      },
      set(newValue) {
        this.$emit('input', newValue);
      }
    }
  }
};
</script>