nodejs配置

1.下载node.js
2.在安装目录下创建node_cachae和node_global
3.将node_global和node_modules改为全局环境变量
4.在vscode中安装code runner/JavaScript/live server
5.更改vscode中的用户设置（settings.json)添加：

 "liveServer.settings.donotShowInfoMsg": true,
  "code-runner.runInTerminal": true,
  "code-runner.executorMap": {
    "python": "set PYTHONIOENCODING=utf8 && python ",
    "javascript": "D:\\software\\nodejs\\node.exe"
  },
  "terminal.integrated.defaultProfile.windows": "Command Prompt"