> For the complete documentation index, see [llms.txt](https://xml-1.gitbook.io/vuejs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xml-1.gitbook.io/vuejs/ep08-06-tuy-chinh-mot-su-kien-trong-component-con-and-and-ep08-08-viec-giao-thuc-qua-callback-ok.md).

# Ep08#06 - Tuỳ chỉnh một sự kiện trong component con && Ep08#08 - Việc giao thức qua Callback (ok

### **Part 1 sử dụng** name=$event

<figure><img src="/files/V7Cm4JfZKxoPR99Dl36m" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/X3slVPAX12SH8yVV4Hen" alt=""><figcaption><p>Nói theo một cách dễ hiểu là bên con tạo một event, bên cha hứng event</p></figcaption></figure>

C:\Users\Administrator\OneDrive\Desktop\vuejs2\src\App.vue

```html
<template>
  <div id="app">
    <img alt="Vue logo" src="./assets/logo.png">
    <hello-world/>
  </div>
</template>
<script>
import HelloWorld from './components/HelloWorld.vue'
export default {
  name: 'App',
  components: {
    HelloWorld
  }
}
</script>
<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>
```

C:\Users\Administrator\OneDrive\Desktop\vuejs2\src\components\HelloWorld.vue

```html
<template>
  <div class="container">
    <h1>{{ name }}</h1>
    <p>
      For a guide and recipes on how to configure / customize this project,<br>
      check out the
      <a href="https://cli.vuejs.org" target="_blank" rel="noopener">vue-cli documentation</a>.
    </p>
    <button @click="changeName">changeName</button>
    <hr>
    <div class="row">
      <div class="col-md-6">
        <hitest @resetNameParent="name=$event"></hitest>
      </div>
      <div class="col-md-6">
        <pitest></pitest>
      </div>
    </div>
  </div>
</template>
<script>
import Hitest from "./Hitest.vue";
import Pitest from "./Pitest.vue";
export default {
  name: 'HelloWorld',
  data: function() {
    return {
      name: "Skype"
    }
  },
  components: {
    Hitest,
    Pitest
  },
  methods: {
    changeName() {
      this.name = "change Name";
    }
  }
}
</script>
```

C:\Users\Administrator\OneDrive\Desktop\vuejs2\src\components\Hitest.vue

```html
<template>
  <div class="hello">
    <h1>{{ name }}</h1>
    <button @click="resetName">ResetName</button>
  </div>
</template>
<script>
export default {
  name: 'Hitest',
  data: function() {
    return {
      name: "Piiii"
    }
  },
  methods: {
    resetName() {
      this.name = "Reseted";
      this.$emit('resetNameParent',this.name);
    }
  }
}
</script>

```

C:\Users\Administrator\OneDrive\Desktop\vuejs2\src\components\Pitest.vue

```html
<template>
  <div class="hello">
    Pitest
  </div>
</template>
<script>
export default {
  name: 'Pitest'
}
</script>
```

### **Part 2 sử dụng calbackfunction**

<figure><img src="/files/yaQW3CAXTYZw5gRUdhYr" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/5GYH1r9VRMoJd97SoVTY" alt=""><figcaption></figcaption></figure>

C:\Users\Administrator\OneDrive\Desktop\vuejs2\src\components\HelloWorld.vue

```html
<template>
  <div class="container">
    <h1>{{ name }}</h1>
    <p>
      For a guide and recipes on how to configure / customize this project,<br>
      check out the
      <a href="https://cli.vuejs.org" target="_blank" rel="noopener">vue-cli documentation</a>.
    </p>
    <button @click="changeName">changeName</button>
    <hr>
    <div class="row">
      <div class="col-md-6">
        <hitest @resetNameParent="name=$event" :resetNameFn="resetNameCallback"></hitest>
      </div>
      <div class="col-md-6">
        <pitest></pitest>
      </div>
    </div>
  </div>
</template>
<script>
import Hitest from "./Hitest.vue";
import Pitest from "./Pitest.vue";
export default {
  name: 'HelloWorld',
  data: function() {
    return {
      name: "Skype"
    }
  },
  components: {
    Hitest,
    Pitest
  },
  methods: {
    changeName() {
      this.name = "change Name";
    },
    resetNameCallback() {
      this.name = 'resetNameCallback';
    }
  }
}
</script>

```

C:\Users\Administrator\OneDrive\Desktop\vuejs2\src\components\Hitest.vue

```html
<template>
  <div class="hello">
    <h1>{{ name }}</h1>
    <button @click="resetName">ResetName</button>
    <button @click="resetNameFn">resetNameCallback</button>
  </div>
</template>
<script>
export default {
  name: 'Hitest',
  data: function() {
    return {
      name: "Piiii",
    }
  },
  props: {
    resetNameFn: Function
  },
  methods: {
    resetName() {
      this.name = "Reseted";
      this.$emit('resetNameParent',this.name);
    }
  }
}
</script>

```


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