视频

mixin(混入)

1. 功能：可以把多个组件共用的配置提取成一个混入对象

2. 使用方式：

   第一步定义混合：

   {
       data(){....},
       methods:{....}
       ....
   }
   

   第二步使用混入：

   ​ 全局混入：Vue.mixin(xxx)
   ​ 局部混入：mixins:['xxx']

components

School.vue

<template>
	<div>
		<h2 @click="showName">学校名称：{{name}}</h2>
		<h2>学校地址：{{address}}</h2>
	</div>
</template>

<script>
	//引入一个hunhe
	// import {hunhe,hunhe2} from '../mixin'

	export default {
		name:'School',
		data() {
			return {
				name:'尚硅谷',
				address:'北京',
				x:666
			}
		},
		// mixins:[hunhe,hunhe2],
	}
</script>

Student.vue

<template>
	<div>
		<h2 @click="showName">学生姓名：{{name}}</h2>
		<h2>学生性别：{{sex}}</h2>
	</div>
</template>

<script>
	// import {hunhe,hunhe2} from '../mixin'

	export default {
		name:'Student',
		data() {
			return {
				name:'张三',
				sex:'男'
			}
		},
		// mixins:[hunhe,hunhe2]
	}
</script>

App.vue

<template>
	<div>
		<School/>
		<hr>
		<Student/>
	</div>
</template>

<script>
	import School from './components/School'
	import Student from './components/Student'

	export default {
		name:'App',
		components:{School,Student}
	}
</script>

main.js

//引入Vue
import Vue from 'vue'
//引入App
import App from './App.vue'
import {hunhe,hunhe2} from './mixin'
//关闭Vue的生产提示
Vue.config.productionTip = false

Vue.mixin(hunhe)
Vue.mixin(hunhe2)


//创建vm
new Vue({
	el:'#app',
	render: h => h(App)
})

mixin.js

export const hunhe = {
	methods: {
		showName(){
			alert(this.name)
		}
	},
	mounted() {
		console.log('你好啊！')
	},
}
export const hunhe2 = {
	data() {
		return {
			x:100,
			y:200
		}
	},
}