Angular，PrimeNG-p下拉意外顯示

Question

我在Angular應用程序中使用PrimeNG。 我打算使用p-dropdown組件，但它在我的組件中呈現得很奇怪。

這看起來與他們在文檔中展示的內容完全不同。

這是package.json。 （也許Bootstrap和PrimeNG版本未對齊或類似？）：

{
  "name": "soar",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^7.2.15",
    "@angular/cdk": "^8.0.1",
    "@angular/common": "~7.2.0",
    "@angular/compiler": "~7.2.0",
    "@angular/core": "^8.0.2",
    "@angular/forms": "~7.2.0",
    "@angular/material": "^8.0.1",
    "@angular/platform-browser": "~7.2.0",
    "@angular/platform-browser-dynamic": "~7.2.0",
    "@angular/router": "~7.2.0",
    "@ng-bootstrap/ng-bootstrap": "^4.1.3",
    "@ngrx/effects": "^7.4.0",
    "@ngrx/store": "^7.4.0",
    "@ngrx/store-devtools": "^7.4.0",
    "bootstrap": "^4.3.1",
    "chart.js": "^2.8.0",
    "core-js": "^2.5.4",
    "font-awesome": "^4.7.0",
    "primeng": "^8.0.0",
    "quill": "^1.3.6",
    "rxjs": "~6.3.3",
    "tslib": "^1.9.0",
    "zone.js": "~0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.13.0",
    "@angular/cli": "~7.3.9",
    "@angular/compiler-cli": "~7.2.0",
    "@angular/language-service": "~7.2.0",
    "@ngrx/schematics": "^7.4.0",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.11.0",
    "typescript": "~3.2.2"
  }
}

這是標記：

 <form [formGroup]="registerForm">
    <div class="form-group">
      <p-dropdown [options]="productionSelectItems" formControlName="productionId"></p-dropdown>
    </div>
</form>

我在整個應用程序中使用Bootstrap，但是我不會想象這會是一個問題。 全披露：我不是UI / UX使用者，但我認為應該將其呈現為某種select元素。 可能是什么原因造成的，我該如何解決？

數據不是問題。 Hello World! 這是我已經硬編碼的一個SelectItem 。 它的值為1，標簽為Hello World!

Answer 1

我通過將PrimeNG和Primeicons樣式導入到項目的styles.scss文件中來解決此問題：

@import "~primeng/resources/primeng.min.css"; 
@import "~primeicons/primeicons.css";

完成此操作后，該下拉列表看起來類似於PrimeNG文檔中的演示：