How is navigation confirmation implemented in Vue Router?

How is navigation confirmation in Vue Router implemented?

Vue Router is a routing plug-in officially provided by Vue.js, used to implement front-end routing. During the development process, it is often necessary to confirm the navigation before the user leaves or refreshes the current page to remind the user whether they need to save unsubmitted data or perform other operations. Vue Router provides a simple and powerful way to implement navigation confirmation.

In Vue Router, navigation guard is an important mechanism for processing navigation logic. Navigation guards are divided into two types: global guards and routing guards. Global guards are called before every navigation, while route guards are only called in specific routes.

In order to achieve navigation confirmation, we mainly focus on the beforeRouteLeave hook function in the route guard. This hook function will be triggered before leaving the current route, and we can write logic in it for navigation confirmation.

The following is a simple sample code:

// 导入Vue和Vue Router
import Vue from 'vue'
import VueRouter from 'vue-router'

// 使用Vue Router插件
Vue.use(VueRouter)

// 创建路由器实例
const router = new VueRouter({
    routes: [
        // 路由配置
    ]
})

// 在路由配置中使用beforeRouteLeave钩子函数
const routeConfig = {
    // 路由配置
    beforeRouteLeave(to, from, next){
        // 判断是否需要进行导航确认
        if(需要进行导航确认的条件){
            // 弹出确认框或其他逻辑处理
            if(confirm('确定要离开当前页面吗？')){
                next() // 确认导航
            }else{
                next(false) // 取消导航
            }
        }else{
            next() // 正常导航
        }
    }
}

// 注册路由
router.addRoutes([routeConfig])

// 创建Vue实例
new Vue({
    router
}).$mount("#app")

In the above code, we implement the navigation confirmation logic through the beforeRouteLeave hook function. In this hook function, we can prompt a confirmation box or other logical processing as needed, and then continue navigation or cancel navigation according to the user's choice.

It should be noted that in the conditions for navigation confirmation in the above code, we need to judge whether navigation confirmation is required based on specific business logic. This condition can be unsubmitted form data, unsaved edits, or other operations that require user confirmation.

In summary, navigation confirmation in Vue Router is implemented through the beforeRouteLeave hook function. We can write logic in this hook function to determine whether navigation confirmation is required, and continue or cancel navigation based on the user's choice. This provides developers with a simple and powerful way to handle navigation confirmation-related needs, improving user experience and application interactivity.

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