我正在尝试使用我的Angular 2应用程序中的Bootstrap 4轮播。具体来说，我正在尝试复制完成here的全宽效果。我得到了最后一点，我必须将元素挂钩到旋转木马：
$('.carousel').carousel({
interval: 6000,
pause: "false"
});
当我尝试编译时，出现以下错误：
错误：'JQuery'类型中不存在属性'carousel'
我知道有ng-bootstrap个组件，但我无法通过这种方式将旋转木马完全全宽。
这是我的代码（Typescript，CSS，HTML）：
import { Component, OnInit } from '@angular/core';
import * as $ from 'jquery';
@Component({
selector: 'app-home-carousel',
templateUrl: './home-carousel.component.html',
styleUrls: ['./home-carousel.component.css']
})
export class HomeCarouselComponent implements OnInit {
constructor() { }
ngOnInit() {
}
setupCarousel(): void {
var $item = $('.carousel .item');
var $wHeight = $(window).height();
$item.eq(0).addClass('active');
$item.height('400px');
$item.addClass('full-screen');
$('.carousel img').each(function() {
var $src = $(this).attr('src');
var $color = $(this).attr('data-color');
$(this).parent().css({
'background-image' : 'url(' + $src + ')',
'background-color' : $color
});
$(this).remove();
});
$(window).on('resize', function (){
$wHeight = $(window).height();
$item.height($wHeight);
});
$('.carousel').carousel({ // <-- ERROR is on the .carousel
interval: 6000,
pause: "false"
});
}
}h3 {
display: inline-block;
padding: 10px;
}
.full-screen {
background-size: cover;
background-position: center;
background-repeat: no-repeat;
height: 300px;
}<div id="mycarousel" class="carousel slide" data-ride="carousel">
<!-- Indicators -->
<ol class="carousel-indicators">
<li data-target="#mycarousel" data-slide-to="0" class="active"></li>
<li data-target="#mycarousel" data-slide-to="1"></li>
<li data-target="#mycarousel" data-slide-to="2"></li>
<li data-target="#mycarousel" data-slide-to="3"></li>
<li data-target="#mycarousel" data-slide-to="4"></li>
</ol>
<!-- Wrapper for slides -->
<div class="carousel-inner" role="listbox">
<div class="item">
<img src="https://unsplash.it/2000/1250?image=397" data-color="lightblue" alt="First Image">
<div class="carousel-caption">
<h3>First Image</h3>
</div>
</div>
<div class="item">
<img src="https://unsplash.it/2000/1250?image=689" data-color="firebrick" alt="Second Image">
<div class="carousel-caption">
<h3>Second Image</h3>
</div>
</div>
<div class="item">
<img src="https://unsplash.it/2000/1250?image=675" data-color="violet" alt="Third Image">
<div class="carousel-caption">
<h3>Third Image</h3>
</div>
</div>
<div class="item">
<img src="https://unsplash.it/2000/1250?image=658" data-color="lightgreen" alt="Fourth Image">
<div class="carousel-caption">
<h3>Fourth Image</h3>
</div>
</div>
<div class="item">
<img src="https://unsplash.it/2000/1250?image=638" data-color="tomato" alt="Fifth Image">
<div class="carousel-caption">
<h3>Fifth Image</h3>
</div>
</div>
</div>
<!-- Controls -->
<a class="left carousel-control" href="#mycarousel" role="button" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#mycarousel" role="button" data-slide="next">
<span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
这是我的 index.html 文件：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Website</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css"
integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<div class="my-fluid-container">
<div class="row">
<div class="col-md-12 app-container">
<app-root>Loading...</app-root>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.imagesloaded/4.1.1/imagesloaded.pkgd.min.js"></script>
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"
integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"
integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"
integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
</body>
</html>
感谢您的帮助！
答案 0 :(得分：3)
步骤1.确保您在angular-cli.json的脚本部分中提到了jQuery和Bootstrap.js
"scripts": [
"../node_modules/jquery/dist/jquery.min.js",
"../node_modules/bootstrap/dist/js/bootstrap.min.js"
]
步骤2.在你的home-carousel.component.ts之后import { Component, OnInit } from '@angular/core';添加declare var $:any;，就像这样：
import { Component, OnInit } from '@angular/core';
declare var $:any;
第3步。虽然不是强制性的，但我觉得将jQuery和JS代码放在ngOnInit()里面更安全：
ngOnInit() {
$('.carousel').carousel({
interval: 2000
});
}
我希望这有效。
答案 1 :(得分：0)
您的问题是您没有导入引导程序，或者您没有正确导入它。在index.html中，请确保在jQuery之后导入bootstrap，如下所示：
<script src="https://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8="crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css"></script>
不是你应该可以使用旋转木马。
答案 2 :(得分：0)
我现在遇到同样的问题，试图在我的应用上发生这种情况：
$（＆＃39; .carousel＆＃39;）。carousel（{//＆lt; - ERROR在.carousel上
这是我的index.html的样子：
<html>
<head>
<meta charset="utf-8">
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"
integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.imagesloaded/4.1.1/imagesloaded.pkgd.min.js"></script>
</head>
<body>
<app-root>
<div class="spinner">
<div class="double-bounce1"></div>
<div class="double-bounce2"></div>
</div>
</app-root>
</body>
</html>
我认为我有正确的bootstrap和jquery
答案 3 :(得分：0)
我遇到了同样的问题，并且可以通过更改
来解决它import * as $ from 'jquery';
到
declare var jQuery: any;
看起来第一个创建jQuery的新实例;然而，第二个访问连接到它的引导函数（轮播，模态等）的全局实例。您可以通过在组件类中添加以下内容并在上述两个import语句之间切换来确认这一点。
console.log($.fn.carousel);
console.log($.fn.modal);
有关声明关键字的更多信息：What does 'declare' do in 'export declare class Actions'?
关于TypeScript导入语句：https://www.typescriptlang.org/docs/handbook/modules.html