Home Web Front-end Vue.js How to implement dynamic display and selection of multi-level menus in Vue projects

How to implement dynamic display and selection of multi-level menus in Vue projects

Oct 09, 2023 pm 08:54 PM
vue multi-level menu Dynamic display

How to implement dynamic display and selection of multi-level menus in Vue projects

How to realize the dynamic display and selection of multi-level menus in Vue projects

In Vue projects, it is a common method to realize the dynamic display and selection functions of multi-level menus need. With the following steps, we can accomplish this functionality, illustrated with concrete code examples.

Step 1: Create menu data
First, we need to create a menu data, which contains the menu's hierarchical structure, name and corresponding routing information. You can use an array to represent menu data. Each menu item is represented by an object. The object contains the name of the menu (name), routing information (path) and submenus (items). The following is a sample menu data:

menuData: [
  {
    name: '首页',
    path: '/home',
    items: []
  },
  {
    name: '关于我们',
    path: '/about',
    items: []
  },
  {
    name: '产品',
    path: '/products',
    items: [
      {
        name: '产品1',
        path: '/products/product1',
        items: []
      },
      {
        name: '产品2',
        path: '/products/product2',
        items: []
      }
    ]
  }
]
Copy after login

Step 2: Create a menu component
Next, we can create a menu component (Menu), which is used to display menu data. In the component's template, we can use the v-for directive to traverse the menu data and perform nested display according to the menu's hierarchical structure. In order to achieve the effect of selecting the menu, we can use the router-link component and determine whether the menu item is selected based on the routing information of the current page. The following is an example menu component:

<template>
  <ul>
    <li v-for="menu in menuData" :key="menu.path">
      <router-link :to="menu.path" :class="{ active: isActive(menu) }">{{ menu.name }}</router-link>
      <menu v-if="menu.items.length" :menu-data="menu.items"></menu>
    </li>
  </ul>
</template>

<script>
export default {
  props: {
    menuData: {
      type: Array,
      required: true
    }
  },
  methods: {
    isActive(menu) {
      return this.$route.path === menu.path
    }
  }
}
</script>

<style scoped>
.active {
  font-weight: bold;
}
</style>
Copy after login

Step 3: Use the menu component in the routing configuration
In the routing configuration file, we need to introduce the menu component and place it in routes Use this component as the layout in the array. In this way, the menu can be displayed dynamically in the layout of each page. The following is an example routing configuration:

import Vue from 'vue'
import Router from 'vue-router'
import Menu from '@/components/Menu'

Vue.use(Router)

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Menu,
    children: [
      {
        path: 'home',
        component: () => import('@/views/Home')
      },
      {
        path: 'about',
        component: () => import('@/views/About')
      },
      {
        path: 'products',
        component: () => import('@/views/Products'),
        children: [
          {
            path: 'product1',
            component: () => import('@/views/Product1')
          },
          {
            path: 'product2',
            component: () => import('@/views/Product2')
          }
        ]
      }
    ]
  }
]

const router = new Router({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

export default router
Copy after login

Through the above three steps, we can implement the dynamic display and selection function of multi-level menus in the Vue project. In the menu component, use v-for to traverse the menu data, use the router-link component to perform routing jumps, and determine whether the menu item is selected through the routing information of the current page. And control the effect of the selected menu through style.

I hope the above content is helpful to you. If you have any questions, please feel free to ask me.

The above is the detailed content of How to implement dynamic display and selection of multi-level menus in Vue projects. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to use echarts in vue How to use echarts in vue May 09, 2024 pm 04:24 PM

Using ECharts in Vue makes it easy to add data visualization capabilities to your application. Specific steps include: installing ECharts and Vue ECharts packages, introducing ECharts, creating chart components, configuring options, using chart components, making charts responsive to Vue data, adding interactive features, and using advanced usage.

The role of export default in vue The role of export default in vue May 09, 2024 pm 06:48 PM

Question: What is the role of export default in Vue? Detailed description: export default defines the default export of the component. When importing, components are automatically imported. Simplify the import process, improve clarity and prevent conflicts. Commonly used for exporting individual components, using both named and default exports, and registering global components.

How to use map function in vue How to use map function in vue May 09, 2024 pm 06:54 PM

The Vue.js map function is a built-in higher-order function that creates a new array where each element is the transformed result of each element in the original array. The syntax is map(callbackFn), where callbackFn receives each element in the array as the first argument, optionally the index as the second argument, and returns a value. The map function does not change the original array.

The difference between event and $event in vue The difference between event and $event in vue May 08, 2024 pm 04:42 PM

In Vue.js, event is a native JavaScript event triggered by the browser, while $event is a Vue-specific abstract event object used in Vue components. It is generally more convenient to use $event because it is formatted and enhanced to support data binding. Use event when you need to access specific functionality of the native event object.

The role of onmounted in vue The role of onmounted in vue May 09, 2024 pm 02:51 PM

onMounted is a component mounting life cycle hook in Vue. Its function is to perform initialization operations after the component is mounted to the DOM, such as obtaining references to DOM elements, setting data, sending HTTP requests, registering event listeners, etc. It is only called once when the component is mounted. If you need to perform operations after the component is updated or before it is destroyed, you can use other lifecycle hooks.

The difference between export and export default in vue The difference between export and export default in vue May 08, 2024 pm 05:27 PM

There are two ways to export modules in Vue.js: export and export default. export is used to export named entities and requires the use of curly braces; export default is used to export default entities and does not require curly braces. When importing, entities exported by export need to use their names, while entities exported by export default can be used implicitly. It is recommended to use export default for modules that need to be imported multiple times, and use export for modules that are only exported once.

What are hooks in vue What are hooks in vue May 09, 2024 pm 06:33 PM

Vue hooks are callback functions that perform actions on specific events or lifecycle stages. They include life cycle hooks (such as beforeCreate, mounted, beforeDestroy), event handling hooks (such as click, input, keydown) and custom hooks. Hooks enhance component control, respond to component life cycles, handle user interactions and improve component reusability. To use hooks, just define the hook function, execute the logic and return an optional value.

What scenarios can event modifiers in vue be used for? What scenarios can event modifiers in vue be used for? May 09, 2024 pm 02:33 PM

Vue.js event modifiers are used to add specific behaviors, including: preventing default behavior (.prevent) stopping event bubbling (.stop) one-time event (.once) capturing event (.capture) passive event listening (.passive) Adaptive modifier (.self)Key modifier (.key)

See all articles