navigation

前进刷新，返回不刷新

1. A forward to B, then forward to C;
2. C back to B, B will recover from cache;
3. B forward to C again, C will rebuild, not recover from cache;
4. C forward to A, A will build, now the route contains two A instance.

支持设置最大缓存数

• max属性取值表示最大缓存数
• !important: navigation adds a key to the url to distinguish the route. The default name of the key is VNK, which can be modified.

DEMO

腾讯医典 内容开放平台

## Usage

### Basic Usage

入口js引入dist目录下的vue-navigation.esm或者将src目录下面代码作为组件直接引用

```javascript
import Vue from 'vue'
import router from './router' // vue-router instance
import Navigation from './dist/vue-navigation.esm'

Vue.use(Navigation, {router})
// bootstrap your app...

App.vue

<template>
  <navigation max='10'>
    <router-view></router-view>
  </navigation>
</template>