如何调试Node.js

可以直接在vs code里面调试

在debug侧边栏里，创建一个launch.json，选择node.js。然后会自动生成

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "type": "node",
            "request": "launch",
            "name": "Launch Program",
            "skipFiles": [
                "<node_internals>/**"
            ],
            "program": "${workspaceFolder}\\index.js"
        }
    ]
}

Debugging Node.js with Chrome DevTools

https://nodejs.org/en/docs/guides/debugging-getting-started/

PS C:\Users\clu\Documents\NodeApp\Test> node --inspect .\app.js
Debugger listening on ws://127.0.0.1:9229/34c03922-857b-4e6d-82cf-30dbf27a76ff
For help, see: https://nodejs.org/en/docs/inspector
Server running at http://127.0.0.1:3000/

2.在Chrome浏览器中打开about:inspect