How to solve the problem of 'NavigationDuplicated: Avoided redundant navigation to current location' when using vue-router in a Vue application?

Vue.js is a popular JavaScript framework. It provides many features and tools to build single-page web applications. Vue-router is a commonly used routing management tool in Vue.js. It helps us implement routing in Single Page Applications (SPA).

However, when using vue-router, you may encounter the "NavigationDuplicated: Avoided redundant navigation to current location" error. This problem usually occurs when the user clicks on the routing path repeatedly. In this case, vue-router will prompt "Avoid repeated access to the current location".

Why does this error occur? This is because vue-router detects that users repeatedly access the same address, which can cause problems during the loading of page components. Therefore, the navigation guard in vue-router will stop page loading to avoid repeated navigation.

So, how to solve this problem?

1. Disable navigation guard

The first method is to disable the navigation guard in vue-router. This approach may break how we manage routes, as navigation guards are a very powerful feature that can help us switch between different routes and manage route status, permissions, etc. However, in some scenarios, disabling navigation guards can be an effective way to solve the problem.

To disable navigation guards, we only need to remove them in the routing configuration:

const router = new VueRouter({
  routes: [
    { path: '/', component: Home },
    { path: '/about', component: About },
    { path: '/contact', component: Contact },
  ],
  mode: 'history',
  base: process.env.BASE_URL,
  scrollBehavior (to, from, savedPosition) {
    return { x: 0, y: 0 }
  }
})

2. Solution

The second method is to solve this problem, At the same time, the function of navigation guard is retained. There are two solutions:

1. Use the catch method

The catch method is a method provided by vue-router. During the execution of the navigation guard, if an error occurs, the catch method will be called. . We can return a false value in the catch method to avoid jumping back to the current page.

router.beforeEach((to, from, next) => {
  if (to.path === from.path) {
    next(false)
  } else {
    next()
  }
})

In this way, we can avoid repeated navigation if the user visits the same address repeatedly.

2. Use the replace method

The replace method is a better solution. This method can redirect to the same address without triggering the navigation guard. We only need to use the replace method in the route's jump method to avoid repeated navigation.

this.$router.replace(to)

In this way, whenever the user clicks to jump to the same route, the current route will be replaced with a new route without loading duplicate components. This avoids problems with navigation guards.

It is a very common problem that the "NavigationDuplicated: Avoided redundant navigation to current location" error occurs when using vue-router in a Vue application. We can choose to disable navigation guards, use the catch method or use the replace method to solve this problem according to our needs.

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