VSCode 中开启 JavaScript 代码 debug 断点调试

Question

在 .vscode 文件夹中新建 launch.json，设置内容如下：

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch",
            "type": "node",
            "request": "launch",
            "program": "${workspaceRoot}/test.js",
            "stopOnEntry": false,
            "args": [],
            "cwd": "${workspaceRoot}",
            "runtimeExecutable": null,
            "runtimeArgs": [
                "--nolazy"
            ],
            "env": {
                "NODE_ENV": "development"
            },
            "externalConsole": false,
            "preLaunchTask": "",
            "sourceMaps": false,
            "outDir": null
        },
        {
            "name": "Attach",
            "type": "node",
            "request": "attach",
            "port": 5858
        }
    ]
}

VS Code debug PHP , Ruby , Go , C# , Python , C++ , Powershell and many others
更详细的配置参考网址： https://code.visualstudio.com/docs/editor/debugging

test.js 内容如下：

var msg = '  test    '
kongge1(msg)
/* 使用 String.trim() 函数，来判断字符串是否全为空*/
function kongge1(test) {
    let str = test.trim().length;
    if (str.length == 0) {
        console.log('字符串全是空格');
    } else {
        console.log('输入的字符串为:' + test);
    }
}

输出 log 如下：