Vue中子组件调用父组件的3种方法实例

<template>
  <div>
    <child></child>
  </div>
</template>
<script>
  import child from './components/childcomponent';
  export default {
    components: {
      child
    },
    methods: {
      fatherMethod() {
        console.log('父组件方法');
      }
    }
  };
</script>

<template>
  <div>
    <button @click="childMethod()">点击按钮</button>
  </div>
</template>
<script>
  export default {
    methods: {
      childMethod() {
        this.$parent.fatherMethod();
      }
    }
  };
</script>

<template>
  <div>
    <child @fatherMethod="fatherMethod"></child>
  </div>
</template>
<script>
  import child from './components/childcomponent'
  export default {
    components: {
      child
    },
    methods: {
      fatherMethod() {
        console.log('父组件方法');
      }
    }
  };
</script>

<template>
  <div>
    <button @click="childMethod()">点击按钮</button>
  </div>
</template>
<script>
  export default {
    methods: {
      childMethod() {
        this.$emit('fatherMethod');
      }
    }
  };
</script>

<template>
  <div>
    <child :fatherMethod="fatherMethod"></child>
  </div>
</template>
<script>
  import child from './components/childcomponent';
  export default {
    components: {
      child
    },
    methods: {
      fatherMethod() {
        console.log('父组件方法');
      }
    }
  };
</script>

<template>
  <div>
    <button @click="childMethod()">点击按钮</button>
  </div>
</template>
<script>
  export default {
    props: {
      fatherMethod: {
        type: Function,
        default: null
      }
    },
    methods: {
      childMethod() {
          this.fatherMethod();
        }
      }
    }
  };
</script>