P29. vue3 js页面跳转 和替换当前位置

js页面跳转

App.vue

<script setup>


</script>

<template>
  <div>
    <h1>Hello App!</h1>

      <!--使用 router-link 组件进行导航 -->
      <!--通过传递 `to` 来指定链接 -->
      <!--`<router-link>` 将呈现一个带有正确 `href` 属性的 `<a>` 标签-->
      <router-link to="/">Go to Home</router-link>
      <p>---</p>
      <router-link to="/about">Go to About</router-link>
       <p>---</p>
      <router-link to="/user/56">Go to User</router-link>
    <p>---</p>
    <router-link to="/news/56">Go to User</router-link>
    <p>---</p>
    <router-link to="/parent">Go to Parent</router-link>
    <p>---</p>
    <router-link to="/page">Go to Page</router-link>

    <!-- 路由出口 -->
    <!-- 路由匹配到的组件将渲染在这里 -->
    <router-view></router-view>


  </div>
</template>

Page.vue

<template>
  <div>
    <h2>PAge web</h2>
    <button @click="goPage">跳转页面</button>
  </div>

</template>

<script>
export default {
  name: "Page",
  methods:{
    goPage: function (){
      console.log("Page-function")
      console.log(this.$router)
      //this.$router.push('/')
      this.$router.push({name:"news",params:{id:56}})
      //this.$router.push({path:"/user/56"})
      // if(11==11){
      //   this.$router.push('/parent')
      // }
    }
  }
}
</script>

<style scoped>

</style>

index.js

// 1. 定义路由组件.
// 也可以从其他文件导入
import Home from "../views/Home.vue";
import About from "../views/About.vue";
import User from "../views/User.vue";
import NotFound from "../views/NotFound.vue";
import News from "../views/News.vue";
import Parent from "../views/Parent.vue";
import Styleone from "../views/Styleone.vue";
import Styletwo from "../views/Styletwo.vue";
import Page from "../views/Page.vue";


import {createRouter, createWebHashHistory} from "vue-router";


// 2. 定义一些路由
// 每个路由都需要映射到一个组件。
// 我们后面再讨论嵌套路由。
const routes = [
    { path: '/', component: Home },
    { path: '/about', component: About },
    { path: '/user/:id', component: User },
    {
        name: "news",
        //path: '/news/:id(\\d+)',//正则匹配
        // path: '/news/:id+',//多个参数
        //path: '/news/:id+',//参数可有可无
        //path: '/news/:id*',//参数可重复叠加
        path: '/news/:id?',//参数不可重复叠加
        component: News
    },
    {
        path: '/:path(.*)',
        component: NotFound
    },//使用正则，匹配任意path
    {
        path: "/parent",
        component: Parent,
        children: [
            {
                path: "styleone",
                component: Styleone
            },
            {
                path: "styletwo",
                component: Styletwo
            }
        ]
    },
    {
        path: "/page",
        component: Page
    }
]

// 3. 创建路由实例并传递 `routes` 配置
// 你可以在这里输入更多的配置，但我们在这里
// 暂时保持简单
const router = createRouter({
    // 4. 内部提供了 history 模式的实现。为了简单起见，我们在这里使用 hash 模式。
    history: createWebHashHistory(),
    routes, // `routes: routes` 的缩写
})


export default router

• 通过对象

  <script>
  export default {
  name: "Page",
  methods:{
    goPage: function (){
      console.log("Page-function")
      console.log(this.$router)
      //this.$router.push('/')
      this.$router.push({name:"news",params:{id:56}})
      //this.$router.push({path:"/user/56"})
      // if(11==11){
      //   this.$router.push('/parent')
      // }
    }
  }
  }
  </script>

• 带参数

  
  <script>
  export default {
  name: "Page",
  methods:{
    goPage: function (){
      console.log("Page-function")
      console.log(this.$router)
      this.$router.push({path:"/user/56"})
    }
  }
  }
  </script>

<script>
export default {
  name: "Page",
  methods:{
    goPage: function (){
      console.log("Page-function")
      console.log(this.$router)
      //this.$router.push('/')
      //this.$router.push({path:"/user/56"})
      if(11==11){
         this.$router.push('/parent')
      }
    }
  }
}
</script>

• 带问号

<script>
export default {
  name: "Page",
  methods:{
    goPage: function (){
      console.log("Page-function")
      console.log(this.$router)
      this.$router.push({path:"/about",query:{name:"tom"}})
    }
  }
}
</script>

替换当前位置

<script>
export default {
  name: "Page",
  methods:{
    goPage: function (){
      console.log("Page-function")
      console.log(this.$router)
      //this.$router.push('/')
      //this.$router.push({name:"news",params:{id:56}})
      //this.$router.push({path:"/user/56"})
      // if(11==11){
      //   this.$router.push('/parent')
      // }
      //this.$router.push({path:"/about",query:{name:"tom"}})
      //替换当前位置
      this.$router.push({path:"/about",query:{name:"tom"},replace: true})
    }
  }
}
</script>

当点击回退时，正常应该返回 /page

但是配置了替换页面会到 /

About.vue

<template>
  <div>
    adout
  </div>
  <button @click="goBack">back</button>

</template>

<script>
export default {
  name: "About",
  methods:{
    goBack(){
      //前进为1，后退为-1
      this.$router.go(-1)
      //this.$router.back()//=go(-1) 后退一步
      //this.$router.forword()//=go(1)前进一步
    }
  }
}
</script>

<style scoped>

</style>

<script>
export default {
  name: "Page",
  methods:{
    goPage: function (){
      console.log("Page-function")
      console.log(this.$router)
      //this.$router.push('/')
      //this.$router.push({name:"news",params:{id:56}})
      //this.$router.push({path:"/user/56"})
      // if(11==11){
      //   this.$router.push('/parent')
      // }
      this.$router.push({path:"/about",query:{name:"tom"}})
      //替换当前位置
      //this.$router.push({path:"/about",query:{name:"tom"},replace: true})
      //this.$router.replace({path:"/about",query:{name:"tom"}})//跟上面一样

    }
  }
}
</script>

后退1步