javascript - Multiple Item 轮播(JS转TS文件)

Question

我正在使用引导轮播在我的 Angular 项目中实现它，我需要将我的 js 文件转换为 ts 文件。我对此很陌生，因此我不确定如何将其转换并实现为 ts 文件。我试图在网上遵循一些 Bootstrap 示例，但它似乎不起作用

这是我的 HTML 代码:

  <h1>Use Bootstrap's carousel to show multiple items per slide.</h1>
  <div class="row">
    <div class="col-md-12">
      <div class="carousel slide multi-item-carousel" id="theCarousel">
        <div class="carousel-inner">
          <div class="item active">
            <div class="col-xs-4"><a href="#1"><img src="http://placehold.it/300/f44336/000000" class="img-responsive"></a></div>
          </div>
          <div class="item">
            <div class="col-xs-4"><a href="#1"><img src="http://placehold.it/300/e91e63/000000" class="img-responsive"></a></div>
          </div>

          <div class="item">
            <div class="col-xs-4"><a href="#1"><img src="http://placehold.it/300/673ab7/000000" class="img-responsive"></a></div>
          </div>
          <div class="item">
            <div class="col-xs-4"><a href="#1"><img src="http://placehold.it/300/4caf50/000000" class="img-responsive"></a></div>
          </div>

          <!--  Example item end -->
        </div>
        <a class="left carousel-control" href="#theCarousel" data-slide="prev"><i class="glyphicon glyphicon-chevron-left"></i></a>
        <a class="right carousel-control" href="#theCarousel" data-slide="next"><i class="glyphicon glyphicon-chevron-right"></i></a>
      </div>
    </div>
  </div>
</div>




AND TS FILE:
import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup } from '@angular/forms';


@Component({
    selector: 'app-login',
    templateUrl: './login.component.html',
    styleUrls: ['./login.component.scss']
})
export class LoginComponent {

// Instantiate the Bootstrap carousel
$('.multi-item-carousel').carousel({
  interval: false
});

// for every slide in carousel, copy the next slide's item in the slide.
// Do the same for the next, next item.
$('.multi-item-carousel .item').each(function(){
  var next = $(this).next();
  if (!next.length) {
    next = $(this).siblings(':first');
  }
  next.children(':first-child').clone().appendTo($(this));

  if (next.next().length>0) {
    next.next().children(':first-child').clone().appendTo($(this));
  } else {
    $(this).siblings(':first').children(':first-child').clone().appendTo($(this));
  }
});
}

Answer 1

首先检查您的 Angular 项目中 package.json 文件中的 bootstrap 依赖项。如果不存在，则安装它

npm i --save bootstrap

添加你的angular.json文件

    "styles": [
        "./node_modules/bootstrap/dist/css/bootstrap.min.css
        ],
        "scripts": [
          "./node_modules/bootstrap/dist/js/bootstrap.min.js",
        ]      

之后你只需要bootstrap的html代码

或者你也可以通过cdn添加bootstrap

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css"
    />

比起将 HTML 代码放在 html 文件的任何组件中

<div id="carouselExampleSlidesOnly" class="carousel slide" data-ride="carousel">
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img class="d-block w-100" src="..." alt="First slide">
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="..." alt="Second slide">
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="..." alt="Third slide">
    </div>
  </div>
</div>