beforeRouteUpdate没有触发

Question

在学习《vue技术栈开发实战》中beforeRouteUpdate没有触发

router.js代码

import Home from '@/views/Home.vue'

export default [
  {
    path: '/',
    name: 'home',
    component: Home
  },
  {
    path: '/argu/:name',
    component: () => import( '@/views/argu.vue'),
    props: true
  },
  {
    path: '/about',
    name: 'about',
    // route level code-splitting
    // this generates a separate chunk (about.[hash].js) for this route
    // which is lazy-loaded when the route is visited.
    component: () => import(/* webpackChunkName: "about" */ '@/views/About.vue')
  }
]

argu.vue代码

<template>
  <div>
    {{ name }}
  </div>
</template>

<script>
export default {
  props: {
    name: {
      type: String,
      default: 'apple'
    }
  },
  beforeRouteUpdate (to, from, next) {
    console.log(to.name,from.name)
    next()
  }
}
</script>

访问页面从http://10.0.0.150:8080/argu/apple跳转到http://10.0.0.150:8080/argu/banana，页面显示发生了变化，但是在console没有输出，beforeRouteUpdate未被触发，新手求解惑，谢各位大神

Answer 1

beforeRouteUpdate的触发是在动态路由情形下，比如 path: '/user/:userName' 这条路由，当页面不变更只动态的改变参数userName时，beforeRouteUpdate便会触发

Answer 2

测试发现是因为router注册时，使用history模式，直接在浏览器跳转不会触发，使用js修改路由器则会触发；使用hash模式则都会触发，具体原因未明