javascript - 如何在 Angular 4 中将样式导出为 css 文件

Question

我是 Angular 4 的新手，我想将我的样式导出为 css 文件。当我服务或构建元素时，它会创建一个 style.bundle.js 文件并将 css 添加为 html 样式元素。但我想导出为样式表文件并使用 link 元素加载它。

我的 Angular-cli.json :

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "project": {
    "name": "ares"
  },
  "apps": [
    {
      "name":"desktop",
      "root": "src",
      "outDir": "dist/desktop",
      "assets": [
        "assets",
        "favicon.ico",
        "views/desktop"
      ],
      "index": "index.html",
      "main": "main.ts",
      "polyfills": "polyfills.ts",
      "test": "test.ts",
      "tsconfig": "tsconfig.app.json",
      "testTsconfig": "tsconfig.spec.json",
      "prefix": "app",
      "styles": [
        "../node_modules/materialize-css/dist/css/materialize.css",
        "../node_modules/font-awesome/css/font-awesome.css",
        "assets/desktop/css/styles.scss",
        "views/desktop/trader/first/assets/css/theme.scss"
      ],
      "scripts": [
        "../node_modules/jquery/dist/jquery.js",
        "../node_modules/hammerjs/hammer.js",
        "../node_modules/materialize-css/dist/js/materialize.js"
      ],
      "environmentSource": "environments/environment.ts",
      "environments": {
        "dev": "environments/environment.ts",
        "prod": "environments/environment.prod.ts"
      }
    }
  ],
  "e2e": {
    "protractor": {
      "config": "./protractor.conf.js"
    }
  },
  "lint": [
    {
      "project": "src/tsconfig.app.json",
      "exclude": "**/node_modules/**"
    },
    {
      "project": "src/tsconfig.spec.json",
      "exclude": "**/node_modules/**"
    },
    {
      "project": "e2e/tsconfig.e2e.json",
      "exclude": "**/node_modules/**"
    }
  ],
  "test": {
    "karma": {
      "config": "./karma.conf.js"
    }
  },
  "defaults": {
    "styleExt": "scss",
    "component": {}
  }
}

Answer 1

当您运行 ng build 或 ng serve 时，它总是创建一个像 styles.bundles.js 这样的包，只是为了节省一些时间在开发版本上。另一方面，如果您执行 ng build --prod，它将生成 styles.bundle.css。

如果您希望为您的开发构建生成 styles.bundle.css，那么只需添加 --extract-css 标志，例如 ng serve --extract -css.

这里有一些关于默认 flags 的更多细节，可能会有帮助: