search
HomeWeb Front-endVue.jsIn Uniapp development applet, how to write custom components and implement value transfer

When we are developing uni projects, we often encounter the need to use some common modules, such as a pop-up window and a set of buttons. If written repeatedly for each page, it will take a lot of time and is not conducive. System maintenance and management, so it is necessary for us to write it as a general module to achieve the purpose of arbitrary calling.

All components will be defined in the components directory. If there is no such directory in your new project, you can also create it yourself. The following is the structure of a defined component (shopwind-multpicker):

components/
  shopwind-multpicker/
  shopwind-multpicker.js
shopwind-multpicker.vue
pages/
static/
App.vue

Each component is a folder. After defining the component, we can call it in the view (vue). The code example is as follows:

<shopwind-multpicker :title="title" idField="region_id" nameField="region_name" parentField="parent_id" :selected="selected" @confirm="confirm"></shopwind-multpicker>

This completes the display of a component, then we How to pass the component value to the parent page, you can use this.$emit method in the component (shopwind-multpicker.vue) file:

// 组件的vue文件
this.$emit(&#39;confirm&#39;, &#39;返回父页面的结果集&#39;)

Then in the parent page, you need to define the emit section A method with the same parameter name (here: confirm) is used to receive the return result of the subcomponent. This method is defined in methods

// 父页面的vue文件
export default {
  data() {
    return {}
  },
  methods: {
    confirm(result) {
      // 这里可以获取您选择后返回的数据
      console.log(result)
    }
  }
}

This completes the value transfer of a parent-child page. In this example, it is used The shopwind-multpicker component is a plug-in that supports three-level linkage, such as regional linkage and category linkage. It can support three-level linkage of any model. This plug-in has been released to the Dcloud plug-in market. If you need it, you can download it for free from the plug-in market. Usage: Universal package three-level linkage, can support any model (such as regional linkage, classification linkage) - DCloud plug-in market

The above is the detailed content of In Uniapp development applet, how to write custom components and implement value transfer. For more information, please follow other related articles on the PHP Chinese website!

Statement
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
Understanding Vue.js: Primarily a Frontend FrameworkUnderstanding Vue.js: Primarily a Frontend FrameworkApr 17, 2025 am 12:20 AM

Vue.js is a progressive JavaScript framework released by You Yuxi in 2014 to build a user interface. Its core advantages include: 1. Responsive data binding, automatic update view of data changes; 2. Component development, the UI can be split into independent and reusable components.

Netflix's Frontend: Examples and Applications of React (or Vue)Netflix's Frontend: Examples and Applications of React (or Vue)Apr 16, 2025 am 12:08 AM

Netflix uses React as its front-end framework. 1) React's componentized development model and strong ecosystem are the main reasons why Netflix chose it. 2) Through componentization, Netflix splits complex interfaces into manageable chunks such as video players, recommendation lists and user comments. 3) React's virtual DOM and component life cycle optimizes rendering efficiency and user interaction management.

The Frontend Landscape: How Netflix Approached its ChoicesThe Frontend Landscape: How Netflix Approached its ChoicesApr 15, 2025 am 12:13 AM

Netflix's choice in front-end technology mainly focuses on three aspects: performance optimization, scalability and user experience. 1. Performance optimization: Netflix chose React as the main framework and developed tools such as SpeedCurve and Boomerang to monitor and optimize the user experience. 2. Scalability: They adopt a micro front-end architecture, splitting applications into independent modules, improving development efficiency and system scalability. 3. User experience: Netflix uses the Material-UI component library to continuously optimize the interface through A/B testing and user feedback to ensure consistency and aesthetics.

React vs. Vue: Which Framework Does Netflix Use?React vs. Vue: Which Framework Does Netflix Use?Apr 14, 2025 am 12:19 AM

Netflixusesacustomframeworkcalled"Gibbon"builtonReact,notReactorVuedirectly.1)TeamExperience:Choosebasedonfamiliarity.2)ProjectComplexity:Vueforsimplerprojects,Reactforcomplexones.3)CustomizationNeeds:Reactoffersmoreflexibility.4)Ecosystema

The Choice of Frameworks: What Drives Netflix's Decisions?The Choice of Frameworks: What Drives Netflix's Decisions?Apr 13, 2025 am 12:05 AM

Netflix mainly considers performance, scalability, development efficiency, ecosystem, technical debt and maintenance costs in framework selection. 1. Performance and scalability: Java and SpringBoot are selected to efficiently process massive data and high concurrent requests. 2. Development efficiency and ecosystem: Use React to improve front-end development efficiency and utilize its rich ecosystem. 3. Technical debt and maintenance costs: Choose Node.js to build microservices to reduce maintenance costs and technical debt.

React, Vue, and the Future of Netflix's FrontendReact, Vue, and the Future of Netflix's FrontendApr 12, 2025 am 12:12 AM

Netflix mainly uses React as the front-end framework, supplemented by Vue for specific functions. 1) React's componentization and virtual DOM improve the performance and development efficiency of Netflix applications. 2) Vue is used in Netflix's internal tools and small projects, and its flexibility and ease of use are key.

Vue.js in the Frontend: Real-World Applications and ExamplesVue.js in the Frontend: Real-World Applications and ExamplesApr 11, 2025 am 12:12 AM

Vue.js is a progressive JavaScript framework suitable for building complex user interfaces. 1) Its core concepts include responsive data, componentization and virtual DOM. 2) In practical applications, it can be demonstrated by building Todo applications and integrating VueRouter. 3) When debugging, it is recommended to use VueDevtools and console.log. 4) Performance optimization can be achieved through v-if/v-show, list rendering optimization, asynchronous loading of components, etc.

Vue.js and React: Understanding the Key DifferencesVue.js and React: Understanding the Key DifferencesApr 10, 2025 am 09:26 AM

Vue.js is suitable for small to medium-sized projects, while React is more suitable for large and complex applications. 1. Vue.js' responsive system automatically updates the DOM through dependency tracking, making it easy to manage data changes. 2.React adopts a one-way data flow, and data flows from the parent component to the child component, providing a clear data flow and an easy-to-debug structure.

See all articles

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)
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Chat Commands and How to Use Them
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)