Toggle 和 Modals 不适用于 Angular 应用

Question

我是 Angular 新手，在让 Bootstrap 切换和 Modal 工作时遇到了一些问题。 BootStrap CSS 文件正在工作，因为表单正在接受样式；但是，我认为 JS 文件没有正确链接。请让我知道我在做什么。

我使用 Angular CLI 对 BootStrap 和 jQuery 进行了 NPM 安装。 安装后，我将 BootStrap 和 jQuery 文件链接到 angular.json 文件，以便应用程序能够使用这些库。

"build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/LyndaChapter1",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.app.json",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            **"styles": [
              **"node_modules/bootstrap/dist/css/bootstrap.css",
              "src/styles.css"**
            ],
            "scripts": [
              "node_modules/bootstrap/dist/js/bootstrap.js",
              "node_modules/jquery/dist/jquery.js"
            ],**
            "es5BrowserSupport": true
          },
          "configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                }
              ]
            }
          }
        },

预期结果：切换和模态应该可以工作 实际结果：两者都不起作用

Answer 1

虽然我同意这里关于不使用 jQuery 的其他答案，但如果您打算将它与 bootstrap 或任何其他 依赖 的库一起使用，则必须先加载 jQuery 。

所以，要解决您的问题，只需将 jQuery 依赖项置于引导依赖项之上。

Answer 2

尝试将这些包添加到您的 package.json 文件并在 Package.json 文件级别运行 npm install --save 命令。

/* "@ng-bootstrap/ng-bootstrap": "^4.1.0", “引导程序”：“^4.3.1”*/

Answer 3

jQuery 是在 Angular 上运行的糟糕选择...您可能需要的是 ngBootstrap

那里有很好的样板代码，您可以像 i did here 一样使用它们

相关HTML：

<ng-template #content let-modal>
  <div class="modal-header">
    <h4 class="modal-title" id="modal-basic-title">Profile update</h4>
    <button type="button" class="close" aria-label="Close" (click)="modal.dismiss('Cross click')">
      <span aria-hidden="true">&times;</span>
    </button>
  </div>
  <div class="modal-body">
    <form>
      <div class="form-group">
        <label for="dateOfBirth">Date of birth</label>
        <div class="input-group">
          <input id="dateOfBirth" class="form-control" placeholder="yyyy-mm-dd" name="dp" ngbDatepicker #dp="ngbDatepicker">
          <div class="input-group-append">
            <button class="btn btn-outline-secondary calendar" (click)="dp.toggle()" type="button"></button>
          </div>
        </div>
      </div>
    </form>
  </div>
  <div class="modal-footer">
    <button type="button" class="btn btn-outline-dark" (click)="modal.close('Save click')">Save</button>
  </div>
</ng-template>

<button class="btn btn-lg btn-outline-primary" (click)="open(content)">Launch demo modal</button>

<hr>

<pre>{{closeResult}}</pre>

<hr/>

<p>
  <button type="button" class="btn btn-outline-primary" (click)="isCollapsed = !isCollapsed"
          [attr.aria-expanded]="!isCollapsed" aria-controls="collapseExample">
    Toggle
  </button>
</p>
<div id="collapseExample" [ngbCollapse]="isCollapsed">
  <div class="card">
    <div class="card-body">
      You can collapse this card by clicking Toggle
    </div>
  </div>
</div>

相关TS：

import {Component} from '@angular/core';
import {NgbModal, ModalDismissReasons} from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'ngbd-modal-basic',
  templateUrl: './modal-basic.html'
})
export class NgbdModalBasic {
  closeResult: string;
  public isCollapsed = false;

  constructor(private modalService: NgbModal) {}

  open(content) {
    this.modalService.open(content, {ariaLabelledBy: 'modal-basic-title'}).result.then((result) => {
      this.closeResult = `Closed with: ${result}`;
    }, (reason) => {
      this.closeResult = `Dismissed ${this.getDismissReason(reason)}`;
    });
  }

  private getDismissReason(reason: any): string {
    if (reason === ModalDismissReasons.ESC) {
      return 'by pressing ESC';
    } else if (reason === ModalDismissReasons.BACKDROP_CLICK) {
      return 'by clicking on a backdrop';
    } else {
      return  `with: ${reason}`;
    }
  }
}