详解vue 在移动端体验上的优化解决方案

 ## 核心代码
  store.subscribeAction({
   before: action => {
    if (shouldEffect(action, includes, excludes)) {
     store.commit({ type: namespace + '/SHOW', payload: action.type })
    }
   },
   after: action => {
    if (shouldEffect(action, includes, excludes)) {
     store.commit({ type: namespace + '/HIDE', payload: action.type })
    }
   }
  })
 }
}

## app.vue
 <transition :name="transitionName"> 
  <keep-alive :include="data">
    <router-view></router-view>
  </keep-alive>
 </transition>
 
 computed: {
  // 数据存放在vuex里面
  ...mapState({
   data: state => {
    return state.global.data
   }
  })
 },
 methods: {
  // 设置Keep_alive路由
  setKeep_alive (to) {
   if (to.meta.keepAlive) {
    this.$store.dispatch({
     type: 'global/setData',
     payload: to.name
    })
   }
  }
 },
 watch: {
  '$route' (to, from) {
   // 此时从from页面跳转到to页面
   this.setKeep_alive(to)
   const routeDeep = ['/', '/list', '/detail', '/reservation', '/addCars']
   const toDepth = routeDeep.indexOf(to.path)
   const fromDepth = routeDeep.indexOf(from.path)
   if (!from.name) {
    this.transitionName = 'fold'
    return
   }
   this.transitionName = toDepth > fromDepth ? 'fold-left' : 'fold-right'
  }
 },

## router.js
scrollBehavior (to, from, savedPosition) {
  // keep-alive 返回缓存页面后记录浏览位置
  if (savedPosition && to.meta.keepAlive) {
   return savedPosition
  }
  // 异步滚动操作
  return new Promise((resolve) => {
   setTimeout(() => {
    resolve({ x: 0, y: 1 })
   }, 0)
  })
 },

## app.vue
<keep-alive :include="data">
 <router-view></router-view>
</keep-alive>
computed: {
  // 数据存放在vuex里面
  ...mapState({
   data: state => {
    return state.global.data
   }
  })
 },
 methods: {
  // 设置Keep_alive路由
  setKeep_alive (to) {
   if (to.meta.keepAlive) {
    this.$store.dispatch({
     type: 'global/setData',
     payload: to.name
    })
   }
  }
 },
 watch: {
  '$route' (to, from) {
   // 此时从from页面跳转到to页面
   this.setKeep_alive(to)
  }
 },

<Scroll
 ref="scroll"
 class="scroll-home"
 :scrollbar="scrollbar"
 :probeType="3"
 :pullDownRefresh="pullDownRefresh"
 :pullUpLoad="true"
 @pullingDown="onRefresh"
 @scroll="scroll"
 @pullingUp="onLoad"
>
 <div class="contantView">
 </div>
</Scroll>

## rem.js
const baseSize = 32
// 设置 rem 函数
function setRem () {
 // 当前页面宽度相对于 750 宽的缩放比例，可根据自己需要修改。
 const scale = document.documentElement.clientWidth / 750
 // 设置页面根节点字体大小
 document.documentElement.style.fontSize = (baseSize * Math.min(scale, 2)) + 'px'
}
// 初始化
setRem()
// 改变窗口大小时重新设置 rem
window.onresize = function () {
 setRem()
}
## main.js
import './rem'

module.exports = {
 plugins: {
  'autoprefixer': {
   browsers: ['Android >= 4.0', 'iOS >= 7']
  },
  'postcss-pxtorem': {
   rootValue: 16,
   propList: ['*']
  }
 }
}

## router.js
scrollBehavior (to, from, savedPosition) {
  // keep-alive 返回缓存页面后记录浏览位置
  if (savedPosition && to.meta.keepAlive) {
   return savedPosition
  }
  // 异步滚动操作
  return new Promise((resolve) => {
   setTimeout(() => {
    resolve({ x: 0, y: 1 })
   }, 0)
  })
 },

// 路由懒加载
const _import_ = file => () => import('./views/' + file + '.vue')

routes: [
  {
   path: '/',
   name: 'home',
   component: _import_('Home/Home'),
   meta: {
    title: '首页',
    keepAlive: true
   }
  },
]