Detailed explanation of the method of implementing burying points in WeChat applet

In the process of mini program development, burying points is an important means to realize data collection and user behavior analysis. By burying the points, we can obtain various operation information of users when using the mini program, so as to better understand user behavior characteristics and optimize product experience. The following will introduce how to implement burying points in the applet and explain it through code examples.

1. Ideas for burying points to realize

The implementation of the burying point of the applet mainly relies on the life cycle function provided by the applet. By inserting data reporting code in the appropriate life cycle, the burying point can be completed. Commonly used life cycle functions are:

• onLaunch, onShow, onHide, etc.
• onLoad, onShow, onHide, etc.

2. Code implementation

Encapsulate reporting function
First, a public reporting function needs to be written to send buried point data to the server. Here is an example:

// utils/
const app = getApp()
const host = 
export const reportTrackEvent = (data) => {
  ({
    url: `${host}/trackEvent`,
    method: 'POST',
    data,
    success(res) {
      ('Reported successfully', res)
    },
    fail(err) {
      ('Report failed', err)
    }
  })
}

Insert buried code in life cycle
Take the onLaunch life cycle as an example:

// 
import { reportTrackEvent } from './utils/request'
App({
  onLaunch() {
    const systemInfo = ()
    const { model, system, version } = systemInfo
    reportTrackEvent({
      event: 'app_launch',
      device_model: model,
      os_name: system,
      os_version: version
    })
  }
})

When the above code starts, it will send an app_launch event to the server and carry data such as device model, operating system name and version number. Similarly, we can bury the "Open applet" event in the onShow life cycle, bury the "Open applet" event in the onHide, etc.

Page interaction point
In addition to the application life cycle, page loading, interaction and other links also need to be buried. Taking page loading as an example:

// pages/index/
import { reportTrackEvent } from '../../utils/request'
Page({
  onLoad() {
    reportTrackEvent({
      event: 'page_view',
      page_name: 'index'
    })
  }
})

For page interaction, you can insert buried code into the event callback function, for example:

<!-- pages/index/ -->
<button bindtap="handleTap">Click</button>

// pages/index/
Page({
  handleTap() {
    reportTrackEvent({
      event: 'button_click',
      button_name: 'Home button'
    })
  }
})

3. Summary

The basic idea of ​​implementing burying points in a mini program is to use life cycle functions and event callbacks to insert data reporting codes. In actual development, reasonable buried event and data dimensions need to be determined according to the needs, and pay attention to the performance impact of buried points to ensure that it does not bring too much burden to the mini program.

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