search
HomeWeb Front-enduni-appWhat should I do if uniapp does not support this.$refs?

As a developer, if you are developing using the uniapp framework, you may encounter some problems. One of them is that uniapp does not support the use of this.$refs syntax. This article will explore this problem and how to solve it.

First of all, we need to understand what this.$refs is and what it does. In the Vue.js framework, this.$refs is used to obtain references to subcomponents or DOM elements. Use this.$refs to easily access and modify components and DOM elements. However, since the uniapp framework adopts a development model based on small program extensions, this.$refs is not supported in uniapp.

So, how to get the reference of subcomponent or DOM element in uniapp? The answer is to use the API provided by uniapp to operate. uniapp provides many APIs, such as univerify authorization verification, uni.request network request, uni.showToast prompt box, etc. To obtain references to subcomponents or DOM elements, we can use the API provided by uni-app - uni.createSelectorQuery().

uni.createSelectorQuery() provides a method to select nodes on the page, and returns a query object. For this query object, we can use the methods it provides, such as select, selectAll, boundingClientRect, etc. to obtain the node information we need. Let's look at an example:

<template>
  <view>
    <button>获取节点信息</button>
    <view>{{ message }}</view>
  </view>
</template>

<script>
export default {
  data() {
    return {
      message: &#39;Hello uniapp!&#39;,
      myViewRect: null
    }
  },
  methods: {
    handleClick() {
      uni.createSelectorQuery().select(&#39;.myView&#39;).boundingClientRect(rect => {
        this.myViewRect = rect
        console.log(this.myViewRect)
      }).exec()
    }
  }
}
</script>

In this example, we use the view tag, set the ref attribute to the view tag, and set an attribute named myView. In this example, we obtain the information of the myView node through the this.myViewRect property. When the button is clicked, we use uni.createSelectorQuery(), and use the .select() method to select the node we need, then use the .boundingClientRect() method to obtain the information of this node, and finally use the .exec() method to execute this operation. In the callback function, we obtained the information of the myView node, assigned it to the myViewRect property, and then printed this property on the console.

In short, although the uniapp framework does not support the use of this.$refs syntax, we can still use other methods to obtain references to subcomponents or DOM elements. I believe that after mastering the uni.createSelectorQuery() API, you can easily obtain the node information you need to achieve your business needs.

The above is the detailed content of What should I do if uniapp does not support this.$refs?. 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
How do you debug issues on different platforms (e.g., mobile, web)?How do you debug issues on different platforms (e.g., mobile, web)?Mar 27, 2025 pm 05:07 PM

The article discusses debugging strategies for mobile and web platforms, highlighting tools like Android Studio, Xcode, and Chrome DevTools, and techniques for consistent results across OS and performance optimization.

What debugging tools are available for UniApp development?What debugging tools are available for UniApp development?Mar 27, 2025 pm 05:05 PM

The article discusses debugging tools and best practices for UniApp development, focusing on tools like HBuilderX, WeChat Developer Tools, and Chrome DevTools.

How do you perform end-to-end testing for UniApp applications?How do you perform end-to-end testing for UniApp applications?Mar 27, 2025 pm 05:04 PM

The article discusses end-to-end testing for UniApp applications across multiple platforms. It covers defining test scenarios, choosing tools like Appium and Cypress, setting up environments, writing and running tests, analyzing results, and integrat

What are the different types of testing that you can perform in a UniApp application?What are the different types of testing that you can perform in a UniApp application?Mar 27, 2025 pm 04:59 PM

The article discusses various testing types for UniApp applications, including unit, integration, functional, UI/UX, performance, cross-platform, and security testing. It also covers ensuring cross-platform compatibility and recommends tools like Jes

What are some common performance anti-patterns in UniApp?What are some common performance anti-patterns in UniApp?Mar 27, 2025 pm 04:58 PM

The article discusses common performance anti-patterns in UniApp development, such as excessive global data use and inefficient data binding, and offers strategies to identify and mitigate these issues for better app performance.

How can you use profiling tools to identify performance bottlenecks in UniApp?How can you use profiling tools to identify performance bottlenecks in UniApp?Mar 27, 2025 pm 04:57 PM

The article discusses using profiling tools to identify and resolve performance bottlenecks in UniApp, focusing on setup, data analysis, and optimization.

How can you optimize network requests in UniApp?How can you optimize network requests in UniApp?Mar 27, 2025 pm 04:52 PM

The article discusses strategies for optimizing network requests in UniApp, focusing on reducing latency, implementing caching, and using monitoring tools to enhance application performance.

How can you optimize images for web performance in UniApp?How can you optimize images for web performance in UniApp?Mar 27, 2025 pm 04:50 PM

The article discusses optimizing images in UniApp for better web performance through compression, responsive design, lazy loading, caching, and using WebP format.

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
Will R.E.P.O. Have Crossplay?
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

Atom editor mac version download

Atom editor mac version download

The most popular open source editor