. 1. router.beforeEach((to,from,next)=>{}) 2. Vue-router . For beforeRouteUpdate and beforeRouteLeave, this is already available, so passing a callback is unnecessary and therefore not supported: The leave guard is usually used to prevent the user from accidentally leaving the route with unsaved edits. Vue Components vue dispatch Actions; vuex Commit Mutations ; State Render Vue Components , MutationStateStateAction, MutationActionState, mutationstatestorestorecontext state stategetters, localstorage JSONstringifyparse , Vuex Vue.js vuex, localstorage , VuexReduxActionReducermutationsReducerswitchmutationstate, VuexVueState, VuexViewstore.commitStoremutation->storevue, store store (commit) mutation, Vuexmutation Action mutation, mutationdevtools time-travel mutation, 3.0 Proxy observer , Vue 2 Object.defineProperty , 2.x 3.0 , render vue3.0 api vdom , vue2.x option TypeScript , 3.0 TypeScript , weex fork , Fragment Protal dom , Vue , Proxy , , Options API Vue, setupsetupReact HookHookReactGCVueVue, Compositon API, VueReact HookuseEffectuseMemo, DOM js TagNameprops Children js DOM , DOM , DOMDOMinnerHTML, , patchVnode(children), updateChildrendiff, v-if key Vue v-if input key key key , v-for key v-for Vue DOM key Vue key DOM, key sameNode a.key === b.key. The official router for Vue.js. , localstoragevuexlocalstorage1. router.beforeResolve : . Every guard function receives two arguments: And can optionally return any of the following values: false: cancel the current navigation. Vue vue-router,VueRouterroutesRouter routes v-else v-if false HTMLDOM, v-else-if As shown in the table below, snippet vmData has body like ${this, vm}.$data will provides choice this.$data and vm.$data to you. You can also register global after hooks, however unlike guards, these hooks do not get a next function and cannot affect the navigation: They are useful for analytics, changing the title of the page, accessibility features like announcing the page and many other things. Vue SPA Vue-Router hash URL # hash The navigation can be canceled by returning false. A common pattern is to create a guard forcing authentication. 2 However, it is still supported, meaning you can pass a third argument to any navigation guard. 1.. As the name suggests, the navigation guards provided by vue-router are primarily used to guard navigations either by redirecting it or canceling it. You can add the following options to route components: The beforeRouteEnter guard does NOT have access to this, because the guard is called before the navigation is confirmed, thus the new entering component has not even been created yet. 3webpackrequire.ensure chunkNamejs, Vue-Routerhashhistoryhash, hashURL#www.abc.com/#/vuehash#/vue, hashURLHTTPhashIEhashSPA, onhashchange()hashwindowhashURLhashURL, historyURL#URLURL Vue 2.4 microtasks microtasks macrotasks Navigation Hooks . Routing in Vue3: Navigating the Options Instead of a simple route string, 'Cat', component: Cat, beforeEnter: (to, from, next) => { next(); } }, The parameters here are identical but it only applies to navigation to and from this one specific route. . Vue Router & Vuex) , store getters mutations store mutations actions , $store.state , state getters , getters mapGetters , babel-preset-stage-2 , state mutations getters , mutations , mapGetters mapMutations , mutations actions , Register as a new user and use Qiita more conveniently. PKCE 6. Vue You can register global before guards using router.beforeEach: Global before guards are called in creation order, whenever a navigation is triggered. #API Reference # is the component for enabling user navigation in a router-enabled app. to router.push() string , replace router.replace() router.push(), "router-link-active" ( linkActiveClass), 'page' | 'step' | 'location' | 'date' | 'time' | 'true' | 'false' (string), v-slot RouterLink v-slot prop, /home, "router-link-exact-active" ( linkExactActiveClass), API NavLink , custom , class router-link v-slot , a target="_blank" @click="navigate" , name components , v-slot API , Vue RouterOptions , HTML5 http , hash web ( file://) URL SEO createWebHistory, SSR router.push() router.replace() , isNavigationFailure NavigationFailureType.aborted , beforeRouteLeave, beforeRouteUpdate, $route setup() , router $router setup() , Vue Router , name, name, , history.back() router.go(-1), , history.forward() router.go(1), Promise promise URL , next , web createWebHistory createWebHashHistory hash SEO , RouterLink router-link-active, RouterLink router-link-exact-active, stringifyQuery, qs parseQuery stringifyQuery, Promise , ? parseQuery . vue https://github.com/rails/webpacker/issues/1295, Vue historyURLabc.com/user/idhashhistory404 Vue/Vuex/Vue Router vue vue3 vuex vue-router nuxt Vue 2/3 Eno JavaScriptjQueryReact Ruby on Rails, v-once HTML1, v-on:click=counter++ if loop JS, v-model Vue data HTMLDOM, :class="{YOUR_CLASS: boolean}" CSS, Vue computed methods data methods () , Vue watch data computed watch , v-if false HTMLDOM // called before the route that renders this component is confirmed. Hooks are used by providing functions to the beforeEnter and beforeLeave properties on each ion-route.Returning true allows navigation to proceed, while returning false causes it to be cancelled. Vue 2 Vue 3 API Code Snippets It looks like: Snippets. In that case, you must call next exactly once in any given pass through a navigation guard. ; Unlimited Serverless Rules to customize and extend Auth0's capabilities. router.beforeEach() . routes option router.addRoute() : / /users/:id /users/1 /users/posva, RouteLocationRaw | (to: RouteLocationNormalized) => RouteLocationRaw (), , /users/:id /u/:id alias path , NavigationGuard | NavigationGuard[] (), beforeEnter , boolean | Record | (to: RouteLocationNormalized) => Record (), props router-view , / false /users /users /users/, undefined, addRoute() removeRoute() , Record>, props default , , router.push()redirect, /users/posva#bio, path (phantom blood phantom%20blood) paramsquery hash , replace router.replace() router.push() router.push() router.replace() , RouteLocationRaw RouteLocationNormalized , to from , URL hash # URL hash, redirect next() undefined, Promise next ( next) , , , // base `https://example.com` , // base `#` `createWebHashHistory` , // `https://example.com/folder/#/app/`, // `https://example.com/other-folder/#`, // `file:///usr/etc/folder/index.html#`, // TypeScript, FunctionalComponent . // access to component public instance via `vm`, 'Do you really want to leave? The official router for Vue.js. history.pushState() hash: hashhistory, 2window.location.hash# Vue 3 Snippets https://github.com/vuejs/vue-cli/issues/714, index.html build.js build.js dist , Vuetemplate script style , VueVue data data(){} VueVuedata data ,