UniApp realizes the development and online process analysis of WeChat applet

UniApp implements analysis of the development and launch process of WeChat mini programs

As WeChat mini programs become more and more popular, more and more developers are beginning to pay attention to and learn about the development of WeChat mini programs. As a development framework, UniApp can develop multi-terminal applications at the same time, including the development of WeChat applets. This article will introduce how to use UniApp to develop WeChat mini programs, and analyze the development and launch process in detail.

1. Preparation work
First, we need to set up the development environment of UniApp. To do this, we need to install two tools, Node.js and HBuilderX.

1. Install Node.js: Visit the Node.js official website (https://nodejs.org/zh-cn/), select the appropriate version to download and install.
2. Install HBuilderX: Visit the HBuilderX official website (https://www.dcloud.io/hbuilderx.html), download and install the version suitable for your operating system.

After the installation is completed, we can develop UniApp.

2. Create UniApp project
In HBuilderX, select "File"->"New"->"Project", and then select "UniApp" to create the project.

When creating a project, you need to choose different templates according to your own needs, or you can choose a blank template for customization.

3. Develop WeChat mini programs
UniApp uses vue syntax for development. The development process is very similar to using vue for development. The following is a simple WeChat applet example:

<template>
  <view>
    <text>{{ message }}</text>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        message: 'Hello, UniApp!'
      }
    }
  }
</script>

<style>
  view {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
</style>

In this example, we define a view to display a text message.

4. Debugging and Running
In HBuilderX, we can choose to use the built-in debugger for debugging. Click the Run button and select "Run to Mini Program Simulator" or "Run to WeChat Developer Tools" to debug in the simulator or developer tools.

During the debugging process, we can use the debugging tools provided by WeChat Developer Tools, such as network request, page rendering, real-time data update and other functions, to facilitate development and debugging.

5. WeChat Developer Tools and Online
After we have completed the development and debugging, we can release the WeChat applet and launch it online.

1. Log in to the WeChat public platform (https://mp.weixin.qq.com/), enter the "Development"->"Development Settings" page, and find the "AppID" and "AppSecret" parameters , recorded, and will be used in UniApp later.
2. In HBuilderX, select "Release" -> "Mini Program", and then fill in the relevant information, including AppID and AppSecret.
3. Click the "Generate" button, HBuilderX will automatically build the mini program and generate a preview QR code.
4. Open the WeChat developer tools, click "Preview" and scan the QR code to preview on a real device.
5. When we feel that the mini program is ready for release, we can click the "Upload" button to upload the mini program to the WeChat developer tools.
6. In WeChat developer tools, we can review and publish mini programs. After passing the review, the mini program will be launched online.

Through the above steps, we successfully used UniApp to develop and launch WeChat mini programs.

Summary
As a multi-terminal development framework, UniApp provides developers with a more convenient development model, and can write code once and publish it to multiple platforms at the same time. Through the introduction of this article, I believe readers have already understood the basic process of developing WeChat applet by UniApp as well as some common debugging and online operations. I hope this article will be helpful to developers who are learning and using UniApp.

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