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<template>
<div class="app">
<h1>{{ msg }}{{stuName}}</h1>
<!-- 通过父组件给子组件传递函数间接获取子组件数据 -->
<School :getSchoolName="getSchoolName"/>
<!-- 通过父组件给子组件绑定一个自定义事件实现给父传递数据使用v-on或@方式 -->
<!-- <Student v-on:studentName="getStudentName"/>-->
<Student @studentName="getStudentName" @demo="method1" @click.native="show"/>
<!-- <Student @studentName.once="getStudentName"/>-->
<!-- 通过父组件给子组件绑定一个自定义事件实现给父传递数据,使用ref方式 -->
<!-- <Student ref="student"/>-->
</div>
</template>
<script>
import School from "./components/School.vue";
import Student from "./components/Student.vue";
export default {
name: "App",
components: {
School,
Student
},
data() {
return {
msg: "Hello:",
stuName: ""
}
},
methods: {
getSchoolName(schoolName) {
console.log("获取学校名称", schoolName)
},
getStudentName(name, ...params) {
console.log("getStudentName", name, params)
this.stuName = name
},
method1() {
console.log("demo自定义事件被调用!")
},
show() {
alert("组件点击事件")
}
},
mounted() {
// 正常写法
// this.$refs.student.$on("studentName", this.getStudentName)
// 可以设置只执行一次
// 可以加延时
// this.$refs.student.$once("studentName", this.getStudentName)
// setInterval(() => {
// this.$refs.student.$on("studentName", this.getStudentName)
// }, 3000)
}
}
</script>
<style>
.app {
background-color: gray;
padding: 15px
}
</style>