vue父子组件之间的传参的几种方式小结

<template>
  <ChildComponent :message="hello"></ChildComponent>
</template>
<script>
import ChildComponent from './ChildComponent.vue';
export default {
  components: {
    ChildComponent
  },
  data() {
    return {
      hello: 'Hello, Vue!'
    }
  }
}
</script>

<template>
  <div>{{ message }}</div>
</template>
<script>
export default {
  props: ['message']
}
</script>

<template>
  <button @click="handleClick">传递数据</button>
</template>
<script>
export default {
  methods: {
    handleClick() {
      const data = "Hello, World!"
      this.$emit('customEvent', data);
    }
  }
}
</script>

<template>
  <div>
    <child-component @customEvent="handleCustomEvent"></child-component>
  </div>
</template>
<script>
import ChildComponent from '@/components/ChildComponent.vue'
export default {
  components: {
    ChildComponent
  },
  methods: {
    handleCustomEvent(data) {
      console.log(data)
    }
  }
}
</script>