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1. 自定义指令
2. 数据双向绑定：:value + @input
v-model作用于表单元素
自定义组件使用v-model之后，父组件不用再监听子组件的事件触发
.sync语法糖
3. 组件通信
1. 跨层级访问：$emit，组件过多时会很麻烦，vue提供了$root和$parent两个属性（强耦合），访问组件根节点和父节点，父组件通过ref访问子组件
2.
依赖注入：父组件provide对应属性，子组件通过injected去使用provide提供的数据，injected的内部通过$parent往父节点找对应的属性，所以依然还是强耦合
3. 组件二次封装：修改第三方库样式的时候，使用>>>,就可以了，不用再单独开一个style
这是一个对element
input的组件的二次封装，vue提供了$attrs和$listeners，方便开发二次封装，这样就不用单独去实现自定义组件的v-model，还有el-input对应的各个方法
4. vue插件
Mixins: 生命周期钩子函数在组件的钩子函数之前执行，methods如果有重名的，使用组件中的method
插件：Vue.use(plugin)
5. vue代码的复用方案：
1. Mixin
2. HOC Hihger order component 函数接收组件作为参数，并返回一个新的组件
3. RenderLess组件
// 带插槽的父组件 SearchWrapper.vue <slot name="searchContent" :data="advanced" /> //
子组件中使用父组件的数据 <search-wrapper @search="searchWarehouseAreaList"
@reset="resetForm"> <a-form-model ref="searchForm" :labelCol="{ span: 5 }"
:wrapperCol="{ span: 18, offset: 1 }" :model="searchModel" layout="horizontal"
slot="searchContent" slot-scope="scopeData"> //
这里的scopeData.data指向父组件的:data,也就是advanced
