vue3默认npm run serve打开

在Vue 3中，默认情况下执行`npm run serve`命令不会自动打开浏览器。如果你想要实现自动打开功能，你可以在项目根目录下的配置文件（package.json）中进行配置。具体来说，你需要在`scripts`字段中添加`--open`选项。例如：

"scripts": {
  "serve": "vue-cli-service serve --open",
  "build": "vue-cli-service build",
  "lint": "vue-cli-service lint"
}

这样，在执行`npm run serve`命令时，它将会自动打开浏览器。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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