Detailed explanation of how to debug Node.js in vscode

This article will introduce to you how to debug Node.js in vscode. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

Recommended learning: "vscode tutorial", "nodejs tutorial"

Debug Node.js in vscode

1. First remember which is the startup file

2. Click this and then this

3. Click on this

4. Click on this

5. vscode will automatically create the debug configuration file of launch.json for you

The four attributes are the most important, type, request, name and program
type is the type of language. Such as PHP, Java, Node.js, etc.

request is the type of debug. There are two debug types in vscode, launch and attach. We only need to know the type of launch

name is the configuration name, used to distinguish different configurations

program is the startup file, our startup file is under ${workspaceFolder}/bin/www.js, so we need to change it

6. Change it to this

7. The breakpoint of this breakpoint

8. Click this to start debugging

##9. On the left are variables, on the right are debug controllers, and below are the output and debugging consoles

debug controllers : The first one is to continue execution until the next breakpoint. The second one is single-step skipping, that is, continue to execute the next line of code (without jumping into the function). The third one is single-step debugging, that is, jump into the function and execute The first line of code of the function. The fourth is to single-step out, that is, execute the remaining part of the function and jump out of the function.

The bottom line of the debug controller can be console.log() or directly enter variables You can use the command named to view properties, and you can also execute code, such as assigning values ​​to variables

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