Vuejs2.0 child component calls the method of parent component

Sometimes due to layout problems, the sub-component needs to pass data to the parent component and execute a certain method of the parent. This article mainly introduces the method (sample code) of the Vuejs 2.0 sub-component to access/call the parent component, which is required Friends can refer to it, I hope it can help everyone.

Not much to say about the code:

Child component:

##

<template> 
  <p class="isShowing" ref="isShowing"> 
    <p class="menu-wrapper" ref="scroll_warpper" v-show="!hid_show_switch"> 
      <ul ref="scroll_warpper_ul"> 
        <li class="menu-item" @click="goToFatherDetail(233)"> 
        </li> 
      </ul> 
    </p> 
    <v-loading class="isloading" v-show="hid_show_switch"></v-loading> 
  </p> 
</template> 
<script type="text/ecmascript-6"> 
  export default { 
    methods: { 
      goToFatherDetail (itemId) { 
        // this.$parent.$router.push(&#39;goToDetail&#39;); 
        console.log(&#39;子组件方法走了&#39; + itemId); 
        this.$emit(&#39;refreshbizlines&#39;, itemId); /* <span style="font-family: Arial, Helvetica, sans-serif;">itemId就是子要传的数据 - 这里很重要,refreshbizlines就是父组件$on监测的自定义函数不是父组件的自定义函数。*/</span> 
      } 
    } 
  }; 
</script>

Parent component:

<template> 
  <p class="main-wrapper"> 
      <p class="tab-wrapper"> 
        <p class="tab-item"> 
          <router-link to="/isShowing" class="table-item-text">正在热映</router-link> 
        </p> 
        <p class="tab-item"> 
          <router-link to="/willShow" class="table-item-text">即将上映</router-link> 
        </p> 
      </p> 
    </p> 
    <router-view class="items-show" v-on:refreshbizlines="goToDetail" keep-alive></router-view> 
  </p> 
</template> 
<script type="text/ecmascript-6"> 
  export default { 
    methods: { 
      goToDetail (itemId) { 
        console.log(&#39;父组件走你：&#39; + itemId); 
      } 
    }<strong> 
  }; 
</script></strong>

The parent component uses v-on to make a monitoring function to detect. The final generated code is similar to

on: {
   "refreshbizlines": function($event) {
    _vm.goToDetail(123)
}
}

So the principle is that the child component accesses the parent If the component's detection function refreshbizlines is accessed, the function below refreshbizline will be executed

goToDetail -- that is, the

goToDetail function of the parent component

Pay attention to the

of the parent component

v-on:refreshbizlines="goToDetail"

must be placed on the module name of your parent component calling the child component.

Related recommendations:

vuejs2.0 implementation of paging components using $emit for event monitoring data transfer_javascript skills

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