


VSCode can seamlessly debug the browser. Let's take a look at the usage and principle analysis!
VSCodeEpic update, you can seamlessly debug the browser. The following article will take you to understand this function, see how to use it, and briefly analyze the principle. I hope it will be helpful to you!
2021-07-16 Microsoft published a blog specifically introducing this feature, VSCODE is awesome!
Prior to this, if you want to debug chrome or edge in vscode, you need to use Chrome Debugger or the Microsoft Edge Debugger extension, two vscode extensions.
And more importantly, it can only provide the most basic console functions. Others such as network and element cannot be viewed. We still need to view it in the browser. [Recommended learning: "vscode tutorial"]
What is this function
After the update, we can open directly in vscode link
in chrome or edge, andcomplete almost all common debugging functions such as viewing element, network, etc. directly within vscode.
Effect screenshot:
(edge devtools)
(debug console)
How to use
Use The method is very simple. You only need to press F5 in the front-end project to trigger debugging and perform simple configuration. Here is a lauch.json configuration for everyone. With it, you can directly open the debugging browser.
{ "version": "0.2.0", "configurations": [ { "type": "pwa-msedge", "request": "launch", "name": "Launch Microsoft Edge and open the Edge DevTools", "url": "http://localhost:8080", "webRoot": "${workspaceFolder}" } ] }
Everyone needs to modify parameters such as url and webRoot according to their own situation.
Principle
The principle is actually similar to the chrome debugger extension principle. It is also based on Chrome's devtool protocol to establish a websocket link. Interact by sending formatted json data, so that vscode can dynamically get some runtime information. For example, requests sent by the browser network thread and DOM node information.
You can get a lot of information through chrome devtool protocol, such as the network request mentioned above.
Since it is a two-way link established by websocket, it is easy to change the dom in VSCODE and trigger browser modifications. We only need to operate in VSCODE (websocket client) and then send a piece of JSON data to the browser (websocket server) through websocket. The browser will perform some operations based on the received JSON data. In terms of effect, it is no different from the user's direct manual operation in the browser.
It is worth noting that there are many clients for the chrome devtool protocol, not just the NodeJS client, but also Python, Java, PHP and other clients. For more programming-related knowledge, please visit:Introduction to Programming! !
The above is the detailed content of VSCode can seamlessly debug the browser. Let's take a look at the usage and principle analysis!. For more information, please follow other related articles on the PHP Chinese website!

The main difference between the free and paid versions of VisualStudio is the richness of features and the service supported. The free version (Community) is suitable for individual developers and small teams, providing basic development tools; the paid version (Professional and Enterprise) provides advanced features such as advanced debugging and team collaboration tools, suitable for large projects and enterprise-level development.

VisualStudioCommunityEdition is a free IDE suitable for individual developers, small teams and educational institutions. 1) It provides functions such as code editing, debugging, testing and version control. 2) Based on the Roslyn compiler platform, it supports multiple programming languages and integrates Git and TFVC. 3) Advanced features include unit testing, optimization suggestions include turning off unnecessary extensions and using a lightweight editor.

VisualStudio is an integrated development environment (IDE) developed by Microsoft, which supports a variety of programming languages, including C#, C, Python, etc. 1. It provides IntelliSense function to help write code quickly. 2. The debugger allows setting breakpoints, step-by-step code execution, and identifying problems. 3. For beginners, creating a simple console application is a great way to get started. 4. Advanced usage includes the application of design patterns such as project management and dependency injection. 5. Common errors can be solved step by step through debugging tools. 6. Performance optimization and best practices include code optimization, version control, code quality inspection and automated testing.

VisualStudio is suitable for large-scale projects and enterprise-level application development, while VSCode is suitable for rapid development and multilingual support. 1. VisualStudio provides a comprehensive IDE environment and supports Microsoft technology stack. 2.VSCode is a lightweight editor that emphasizes flexibility and scalability, and supports cross-platform.

Yes, some versions of VisualStudio are free. Specifically, VisualStudioCommunityEdition is free for individual developers, open source projects, academic research, and small organizations. However, there are also paid versions such as VisualStudioProfessional and Enterprise, suitable for large teams and enterprises, providing additional features.

Cross-platform development with VisualStudio is feasible, and by supporting frameworks like .NETCore and Xamarin, developers can write code at once and run on multiple operating systems. 1) Create .NETCore projects and use their cross-platform capabilities, 2) Use Xamarin for mobile application development, 3) Use asynchronous programming and code reuse to optimize performance to ensure efficient operation and maintainability of applications.

The ways to format JSON in VS Code are: 1. Use shortcut keys (Windows/Linux: Ctrl Shift I; macOS: Cmd Shift I); 2. Go through the menu ("Edit" > "Format Document"); 3. Install JSON formatter extensions (such as Prettier); 4. Format manually (use shortcut keys to indent/extract blocks or add braces and semicolons); 5. Use external tools (such as JSONLint and JSON Formatter).

Compiling code in VSCode is divided into 5 steps: Install the C extension; create the "main.cpp" file in the project folder; configure the compiler (such as MinGW); compile the code with the shortcut key ("Ctrl Shift B") or the "Build" button; run the compiled program with the shortcut key ("F5") or the "Run" button.


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