How to debug uniapp? Tips sharing

With the popularity of mobile applications, the frameworks used by developers to build applications have gradually become richer. One of the commonly used cross-platform mobile application development frameworks is UniApp. UniApp is a cross-platform development framework based on the Vue.js architecture. We can use it to easily build applications that support multiple mobile platforms (Android, ios, etc.) at the same time. In the process of application development, we will inevitably encounter some problems, and debugging methods become particularly important at this time. So, this article will introduce some UniApp debugging skills.

1. HBuilderX debugging

HBuilderX is an important part of using UniApp. It allows us to use the Vue plug-in to develop applications more conveniently and preview the interface effect in real time during the coding process. During debugging, HBuilderX also has some tools that can help us solve problems quickly, such as log output and port mapping.

1. Log output

In the HBuilderX IDE, we can use console.log() to output relevant information. When the application is running, relevant output information will be displayed in the console, which can help us quickly locate application problems. We can also use console.error() to output error information so that we can find problems in the application faster.

2. Port mapping

UniApp will create an http server locally during operation, and the server will listen on port number 8080. If during the development process, we need to put the UniApp page running on the computer to the mobile device for testing, we can use the port mapping function provided by HBuilderX to achieve this. The specific operation is that we need to open the menu in HBuilderX, select Run->Port automatic synchronization, and then access http://localIP:7397 on the mobile device to view the UniApp application. Here 7397 is the default port of UniApp. Can be modified as needed.

2. Chrome debugging

1. Connect the phone to the computer

During the debugging process, we need to connect the phone to the computer first. It is assumed here that everyone has completed the connection.

2. Open the developer options

After we connect the phone to the computer, we need to open the developer options of the phone to debug our application. In the phone's settings, by repeatedly clicking on the version number (about 7 times), you will see "Developer Options" at the bottom of "Settings". We enter the developer options and enable USB debugging.

3. Set up port forwarding

When debugging Android devices, we need to use the ADB tool to map the service port before we can debug the application. We first need to install the ADB tool on the computer. Then, we run the following command to forward the port: adb forward tcp:8080 tcp:8080. This way we can debug in Chrome.

4. Debugging

We can enter chrome://inspect/#devices in the address bar of the Chrome browser to view the list of connected devices. We enter the DevTools interface to debug the page by clicking the "inspect" button.

Summary:

With the widespread application of UniApp, I believe that mastering its debugging skills will become increasingly important. Through the introduction of the above methods, I believe you have mastered the basic skills of UniApp debugging. I wish you all a happy development!

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