"file": "${workspaceFolder}/index.html"

问题分析

使用vscode写html代码，装好debugger for chrome之后，打开文件显示无法

localhost 拒绝了我们的连接请求

解决方法

在launch.js文件中

{
    // 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": "chrome",
            "request": "launch",
            "name": "Launch Chrome against localhost",
            "url": "http://localhost:8080",
            "webRoot": "${workspaceFolder}"
        }
    ]
}

添加一行代码“file”，得到下面：

{
    // 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": "chrome",
            "request": "launch",
            "name": "Launch Chrome against localhost",
            "url": "http://localhost:8080",
            "webRoot": "${workspaceFolder}"
            "file": "${workspaceFolder}/hello.html"
        }
    ]
}

其中hello.html填写自己的文件名称

参考

VSCode tasks.json中的各种替换变量的意思 ${workspaceFolder} ${file} ${fileBasename} ${fileDirname}等
https://blog.csdn.net/bat67/article/details/78302870

VS Code插件之Debugger for Chrome
https://blog.csdn.net/xdcx950288/article/details/80640918