Home WeChat Applet Mini Program Development How to generate applet code in applet

How to generate applet code in applet

Jan 13, 2021 am 09:38 AM
Applets

How to generate applet code in applet

Introduction:

A mini program is an application that can be used without downloading and installation. It realizes the dream of "within reach" of applications. Users can open the app by scanning or searching. It also embodies the concept of "use and go", and users do not need to worry about installing too many applications. Applications will be everywhere and available at any time, but there will be no need to install or uninstall them.

(Learning video sharing: Introduction to Programming)

So in the mini program, how to generate the mini program code? Although the mini program can currently be shared to the circle of friends, However, the dissemination of mini program codes, whether shared directly with friends, shared as pictures, or used as an entrance to offline code scanning, is an important entrance to attract traffic.

Example effect:

How to generate applet code in applet

How to generate applet code in applet

Specific implementation:

The applet code, in the view element Bind events

<view bindtap="onViewTap">小程序码</view>
Copy after login

Logic code on the applet

Page({
  data: {},
  // 绑定的点击事件函数
  onViewTap() {
    this.createQrCode(); // 调用生成小程序码
  },

  // 生成小程序码
  createQrCode() {
    this.showLoading();
    wx.cloud
      .callFunction({
        // 请求云函数
        // 云函数getQrCode
        name: &#39;getQrCode&#39;,
      })
      .then((res) => {
        console.log(res);
        const fileId = res.result;
        wx.previewImage({
          // 小程序码,生成后直接预览,前台展示
          urls: [fileId],
          current: fileId,
        });
        this.hideLoading();
      });
  },

  // toast生成中
  showLoading() {
    wx.showLoading({
      title: &#39;正在生成中...&#39;,
      icon: &#39;none&#39;,
    });
  },

  hideLoading() {
    wx.hideLoading();
  },
});
Copy after login

Just the above lines of code on the applet

Cloud function implementation code

Creating the getQrCode cloud function in the cloudFunctions folder will create three files: config.json, index.js, and package.json by default.

Among them, config.json contains the

{
  "permissions": {
    "openapi": [
      "wxacode.getUnlimited"
    ]
  }
}
Copy after login

above. It is a configuration that uses wxacode.getUnlimited to generate a small program code. This configuration is fixed

And the following code in index.js

// 云函数入口文件
const cloud = require(&#39;wx-server-sdk&#39;);

cloud.init();

// 云函数入口函数
exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext(); // 获取上下文
  const result = await cloud.openapi.wxacode.getUnlimited({
    // 调用生成小程序码的接口,携带一些参数,例如:scene
    scene: wxContext.OPENID,
  });
  // console.log(result)
  const upload = await cloud.uploadFile({
    // 生成的小程序码上传到云存储中
    cloudPath: &#39;qrcode/&#39; + Date.now() + &#39;-&#39; + Math.random() + &#39;.png&#39;, // 生成的小程序码存储到云存储当中去,路径
    fileContent: result.buffer,
  });
  return upload.fileID; // 返回文件的fileID,也就是该图片
};
Copy after login

generates a small program code which is the simple cloud function code above. It can be realized, mainly by using the wxacode.getUnlimited interface

to obtain the mini program code, which is suitable for business scenarios that require a large number of codes. The mini program codes generated through this interface are permanently valid and the quantity is temporarily unlimited

Related documents

wxacode.getUnlimited Mini program code generation interface documentation

cloud.uploadFile Upload local resources to cloud storage

Conclusion

There are two ways to generate small program code in a small program. One is https calling, the other is It is a cloud call. In this article, the cloud call is the simplest, eliminating the need to obtain access_token and authentication.

Initiate a cloud function request to generate the applet code on the mini program side. The cloud function side borrows the cloud function Call the wxcode.getUnlimited interface to generate the mini program code, then upload it to cloud storage, return the file ID of the image in the cloud storage, and get the file ID returned by the cloud function on the mini program side, and display the mini program code based on this file ID Come out.

Related recommendations: Mini Program Development Tutorial

The above is the detailed content of How to generate applet code in applet. 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)

Develop WeChat applet using Python Develop WeChat applet using Python Jun 17, 2023 pm 06:34 PM

With the popularity of mobile Internet technology and smartphones, WeChat has become an indispensable application in people's lives. WeChat mini programs allow people to directly use mini programs to solve some simple needs without downloading and installing applications. This article will introduce how to use Python to develop WeChat applet. 1. Preparation Before using Python to develop WeChat applet, you need to install the relevant Python library. It is recommended to use the two libraries wxpy and itchat here. wxpy is a WeChat machine

Can small programs use react? Can small programs use react? Dec 29, 2022 am 11:06 AM

Mini programs can use react. How to use it: 1. Implement a renderer based on "react-reconciler" and generate a DSL; 2. Create a mini program component to parse and render DSL; 3. Install npm and execute the developer Build npm in the tool; 4. Introduce the package into your own page, and then use the API to complete the development.

Implement card flipping effects in WeChat mini programs Implement card flipping effects in WeChat mini programs Nov 21, 2023 am 10:55 AM

Implementing card flipping effects in WeChat mini programs In WeChat mini programs, implementing card flipping effects is a common animation effect that can improve user experience and the attractiveness of interface interactions. The following will introduce in detail how to implement the special effect of card flipping in the WeChat applet and provide relevant code examples. First, you need to define two card elements in the page layout file of the mini program, one for displaying the front content and one for displaying the back content. The specific sample code is as follows: &lt;!--index.wxml--&gt;&l

How uniapp achieves rapid conversion between mini programs and H5 How uniapp achieves rapid conversion between mini programs and H5 Oct 20, 2023 pm 02:12 PM

How uniapp can achieve rapid conversion between mini programs and H5 requires specific code examples. In recent years, with the development of the mobile Internet and the popularity of smartphones, mini programs and H5 have become indispensable application forms. As a cross-platform development framework, uniapp can quickly realize the conversion between small programs and H5 based on a set of codes, greatly improving development efficiency. This article will introduce how uniapp can achieve rapid conversion between mini programs and H5, and give specific code examples. 1. Introduction to uniapp unia

Alipay launched the 'Chinese Character Picking-Rare Characters' mini program to collect and supplement the rare character library Alipay launched the 'Chinese Character Picking-Rare Characters' mini program to collect and supplement the rare character library Oct 31, 2023 pm 09:25 PM

According to news from this site on October 31, on May 27 this year, Ant Group announced the launch of the "Chinese Character Picking Project", and recently ushered in new progress: Alipay launched the "Chinese Character Picking-Uncommon Characters" mini program to collect collections from the society Rare characters supplement the rare character library and provide different input experiences for rare characters to help improve the rare character input method in Alipay. Currently, users can enter the "Uncommon Characters" applet by searching for keywords such as "Chinese character pick-up" and "rare characters". In the mini program, users can submit pictures of rare characters that have not been recognized and entered by the system. After confirmation, Alipay engineers will make additional entries into the font library. This website noticed that users can also experience the latest word-splitting input method in the mini program. This input method is designed for rare words with unclear pronunciation. User dismantling

How to operate mini program registration How to operate mini program registration Sep 13, 2023 pm 04:36 PM

Mini program registration operation steps: 1. Prepare copies of personal ID cards, corporate business licenses, legal person ID cards and other filing materials; 2. Log in to the mini program management background; 3. Enter the mini program settings page; 4. Select " "Basic Settings"; 5. Fill in the filing information; 6. Upload the filing materials; 7. Submit the filing application; 8. Wait for the review results. If the filing is not passed, make modifications based on the reasons and resubmit the filing application; 9. The follow-up operations for the filing are Can.

Introduction to WeChat applet development in Java language Introduction to WeChat applet development in Java language Jun 09, 2023 pm 10:40 PM

WeChat applet is a lightweight application that can be run on the WeChat platform. It does not require downloading and installation, which is convenient and fast. Java language, as a language widely used in enterprise-level application development, can also be used for the development of WeChat applets. In Java language, you can use the SpringBoot framework and third-party toolkits to develop WeChat applets. The following is a simple WeChat applet development process. To create a WeChat mini program, first, you need to register a mini program on the WeChat public platform. After successful registration, you can obtain

Tutorial on writing a simple chat program in Python Tutorial on writing a simple chat program in Python May 08, 2023 pm 06:37 PM

Implementation idea: Establishing the server side of thread, so as to process the various functions of the chat room. The establishment of the x02 client is much simpler than the server. The function of the client is only to send and receive messages, and to enter specific characters according to specific rules. To achieve the use of different functions, therefore, on the client side, you only need to use two threads, one is dedicated to receiving messages, and the other is dedicated to sending messages. As for why not use one, that is because, only

See all articles