vue-router笔记3 导航守卫

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import Vue from "vue"
import VueRouter from "vue-router"

Vue.use(VueRouter);

import Books from "../components/Books.vue"
import yf from "../components/yj.vue"


import math from "../components/math.vue"
import edu from "../components/edu.vue"
import internet from "../components/internet.vue"


import ad from "@/components/ad.vue"

let Foods = () => import("../components/Foods.vue")
// 路由懒加载
let router = new VueRouter({
    routes : [
      {
        path : "/books",
        name : "books",
        meta : {
          index : 2
        },
        beforeEnter (to, from, next) {// 导航守卫第二层
          console.log(to,from);
          next(false)
        },
        component : Books
      },
      {
        path : "/foods",
        name : "foods",
        meta : {
          index : 1,
          flag : false
        },        
        component : Foods,
        children : [
          {
            path : "edu",
            component : edu,
            name : "edu"
          },
          {
            path : "math",
            component : math,
            name : "math"
          },
          {
            path : "internet",
            component : internet,
            name : "internet"
          }
        ]
      },
      {
        path : "/yf",
        name : "yf",
        meta : {
          index : 3
        },        
        component : yf
      },
      {
        path : "*",
        redirect : "/foods"
      },
    
  ],
    linkActiveClass : 'active',
    linkExactActiveClass : 'exact'
});


router.beforeEach(function (to,from,next) {// 导航守卫第一层
	if(to.path == '/foods/edu'){
	  if(to.matched[0].meta.flag) {
	    next();
	  }else {
	    next(false);
	  }
	}else if(to.path == '/foods/math'){
    if(!to.matched[0].meta.flag) {
      next();
    }else {
      next(false);
    }	  
	}else {
	  next();
	}
});

export default router

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<template>
  <div class="wrapper">
    <div>这是yj</div>
  </div>
</template>

<script>
  
  
    export default {
      name : "yj",
      components : {
        
      },
      beforeRouteEnter (to, from, next) {// 导航守卫第三层
        console.log(to, from);
        next();

      }
    }
</script>

<style>
  
</style>