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I-Carousel

Ingxenye yombukiso wesilayidi yokuhamba ngebhayisikili ezintweni—izithombe noma amaslayidi ombhalo—njenge-carousel.

Kuleli khasi

Isebenza kanjani

I-carousel iwumbukiso wesilayidi sokuhamba ngebhayisikili ngochungechunge lokuqukethwe, olwakhiwe ngezinguquko ze-CSS 3D kanye ne-JavaScript encane. Isebenza ngochungechunge lwezithombe, umbhalo, noma imakhaphu yangokwezifiso. Kuhlanganisa futhi nokusekelwa kwezilawuli zangaphambilini/ezilandelayo nezinkomba.

Ezipheqululini lapho i- Page Visibility API isekelwa khona, i-carousel izogwema ukuslayida lapho ikhasi lewebhu lingabonakali kumsebenzisi (njengalapho ithebhu yesiphequluli ingasebenzi, iwindi lesiphequluli lincishiswa, njll.).

Umthelela wokugqwayiza wale ngxenye uncike prefers-reduced-motionembuzweni wemidiya. Bona ingxenye yokunyakaza encishisiwe yemibhalo yethu yokufinyeleleka .

Sicela uqaphele ukuthi ama-carousel afakwe esidlekeni awasekelwe, futhi ama-carousels ngokuvamile awahambisani nezindinganiso zokufinyeleleka.

Isibonelo

Ama-carousels awazimisi ngokuzenzakalelayo ubukhulu besilayidi. Kanjalo, ungase udinge ukusebenzisa izinsiza ezengeziwe noma izitayela zangokwezifiso ukuze usayizi ofanele wokuqukethwe. Nakuba ama-carousels esekela izilawuli zangaphambilini/ezilandelayo nezinkomba, azidingeki ngokusobala. Engeza futhi wenze ngokwezifiso njengoba ubona kufanelekile.

Ikilasi .activelidinga ukwengezwa kwesinye sezilayidi ngaphandle kwalokho i-carousel ngeke ibonakale. Futhi qiniseka ukuthi usetha okuhlukile idkuzilawuli .carouselozikhethela, ikakhulukazi uma usebenzisa ama-carousel amaningi ekhasini elilodwa. Izinto zokulawula nezinkomba kufanele zibe data-bs-targetnesibaluli (noma sezixhumanisi href) esifana nesici.id.carousel

Amaslayidi kuphela

Nali i-carousel enamaslayidi kuphela. Qaphela ukuba khona kwezithombe .d-blockkanye .w-100naku-carousel ukuze uvimbele ukuqondanisa okuzenzakalelayo kwesiphequluli.

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

Ngezilawuli

Yengeza kuzilawuli zangaphambilini nezilandelayo. Sincoma ukusebenzisa ama <button>-elementi, kodwa ungasebenzisa ama- <a>elementi ane- role="button".

<div id="carouselExampleControls" class="carousel slide" data-bs-ride="carousel">
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleControls" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleControls" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>

Ngezinkomba

Ungakwazi futhi ukwengeza izinkomba ku-carousel, eduze nezilawuli, futhi.

<div id="carouselExampleIndicators" class="carousel slide" data-bs-ride="carousel">
  <div class="carousel-indicators">
    <button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="0" class="active" aria-current="true" aria-label="Slide 1"></button>
    <button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="1" aria-label="Slide 2"></button>
    <button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="2" aria-label="Slide 3"></button>
  </div>
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>

Ngamagama-ncazo

Engeza amagama-ncazo kumaslayidi akho kalula nge- .carousel-captionelementi ngaphakathi kwanoma iyiphi .carousel-item. Angafihlwa kalula ezindaweni zokubuka ezincane, njengoba kuboniswe ngezansi, ngezinsiza zokubonisa ozikhethela . Sizifihla ekuqaleni .d-nonefuthi sizibuyisele kumadivayisi anosayizi omaphakathi ane- .d-md-block.

<div id="carouselExampleCaptions" class="carousel slide" data-bs-ride="carousel">
  <div class="carousel-indicators">
    <button type="button" data-bs-target="#carouselExampleCaptions" data-bs-slide-to="0" class="active" aria-current="true" aria-label="Slide 1"></button>
    <button type="button" data-bs-target="#carouselExampleCaptions" data-bs-slide-to="1" aria-label="Slide 2"></button>
    <button type="button" data-bs-target="#carouselExampleCaptions" data-bs-slide-to="2" aria-label="Slide 3"></button>
  </div>
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="..." class="d-block w-100" alt="...">
      <div class="carousel-caption d-none d-md-block">
        <h5>First slide label</h5>
        <p>Some representative placeholder content for the first slide.</p>
      </div>
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
      <div class="carousel-caption d-none d-md-block">
        <h5>Second slide label</h5>
        <p>Some representative placeholder content for the second slide.</p>
      </div>
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
      <div class="carousel-caption d-none d-md-block">
        <h5>Third slide label</h5>
        <p>Some representative placeholder content for the third slide.</p>
      </div>
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleCaptions" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleCaptions" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>

I-Crossfade

Engeza .carousel-fadeku-carousel yakho ukuze uphilise amaslayidi ngoshintsho olufiphele esikhundleni sesilayidi.

<div id="carouselExampleFade" class="carousel slide carousel-fade" data-bs-ride="carousel">
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleFade" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleFade" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>

Engeza data-bs-interval=""ku-a .carousel-itemukuze uguqule inani lesikhathi sokubambezeleka phakathi kokuhamba ngebhayisikili ngokuzenzakalelayo ukuya entweni elandelayo.

<div id="carouselExampleInterval" class="carousel slide" data-bs-ride="carousel">
  <div class="carousel-inner">
    <div class="carousel-item active" data-bs-interval="10000">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item" data-bs-interval="2000">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleInterval" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleInterval" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>

Khubaza ukuswayipha kokuthinta

Ama-carousels asekela ukuswayiphela kwesokunxele/kwesokudla kumadivayisi esikrini esithintwayo ukuze ahambe phakathi kwamaslayidi. Lokhu kungakhutshazwa kusetshenziswa data-bs-touchisibaluli. Isibonelo esingezansi naso asibandakanyi data-bs-rideisibaluli futhi data-bs-interval="false"sinaso asidlali ngokuzenzakalela.

<div id="carouselExampleControlsNoTouching" class="carousel slide" data-bs-touch="false" data-bs-interval="false">
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleControlsNoTouching" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleControlsNoTouching" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>

Okuhlukile okumnyama

Engeza .carousel-darkkwezilawuli .carouselezimnyama, izinkomba, namagama-ncazo. Izilawuli zihlanekezelwe ekugcwaliseni kwazo okumhlophe okuzenzakalelayo ngesakhiwo se- filterCSS. Amazwibela nezilawuli zinokuhlukahluka okwengeziwe kwe-Sass okwenza ngendlela oyifisayo colori- background-color.

<div id="carouselExampleDark" class="carousel carousel-dark slide" data-bs-ride="carousel">
  <div class="carousel-indicators">
    <button type="button" data-bs-target="#carouselExampleDark" data-bs-slide-to="0" class="active" aria-current="true" aria-label="Slide 1"></button>
    <button type="button" data-bs-target="#carouselExampleDark" data-bs-slide-to="1" aria-label="Slide 2"></button>
    <button type="button" data-bs-target="#carouselExampleDark" data-bs-slide-to="2" aria-label="Slide 3"></button>
  </div>
  <div class="carousel-inner">
    <div class="carousel-item active" data-bs-interval="10000">
      <img src="..." class="d-block w-100" alt="...">
      <div class="carousel-caption d-none d-md-block">
        <h5>First slide label</h5>
        <p>Some representative placeholder content for the first slide.</p>
      </div>
    </div>
    <div class="carousel-item" data-bs-interval="2000">
      <img src="..." class="d-block w-100" alt="...">
      <div class="carousel-caption d-none d-md-block">
        <h5>Second slide label</h5>
        <p>Some representative placeholder content for the second slide.</p>
      </div>
    </div>
    <div class="carousel-item">
      <img src="..." class="d-block w-100" alt="...">
      <div class="carousel-caption d-none d-md-block">
        <h5>Third slide label</h5>
        <p>Some representative placeholder content for the third slide.</p>
      </div>
    </div>
  </div>
  <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleDark" data-bs-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Previous</span>
  </button>
  <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleDark" data-bs-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="visually-hidden">Next</span>
  </button>
</div>

Inguquko yangokwezifiso

Ubude besikhathi soshintsho .carousel-itemlungashintshwa ngokuhluka kwe- $carousel-transition-durationSass ngaphambi kokuhlanganiswa noma izitayela zangokwezifiso uma usebenzisa i-CSS ehlanganisiwe. Uma izinguquko eziningi zisetshenziswa, qiniseka ukuthi uguquko luchazwa kuqala (isb. transition: transform 2s ease, opacity .5s ease-out).

Sass

Okuguquguqukayo

$carousel-control-color:             $white;
$carousel-control-width:             15%;
$carousel-control-opacity:           .5;
$carousel-control-hover-opacity:     .9;
$carousel-control-transition:        opacity .15s ease;

$carousel-indicator-width:           30px;
$carousel-indicator-height:          3px;
$carousel-indicator-hit-area-height: 10px;
$carousel-indicator-spacer:          3px;
$carousel-indicator-opacity:         .5;
$carousel-indicator-active-bg:       $white;
$carousel-indicator-active-opacity:  1;
$carousel-indicator-transition:      opacity .6s ease;

$carousel-caption-width:             70%;
$carousel-caption-color:             $white;
$carousel-caption-padding-y:         1.25rem;
$carousel-caption-spacer:            1.25rem;

$carousel-control-icon-width:        2rem;

$carousel-control-prev-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$carousel-control-color}'><path d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0z'/></svg>");
$carousel-control-next-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$carousel-control-color}'><path d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z'/></svg>");

$carousel-transition-duration:       .6s;
$carousel-transition:                transform $carousel-transition-duration ease-in-out; // Define transform transition first if using multiple transitions (e.g., `transform 2s ease, opacity .5s ease-out`)

$carousel-dark-indicator-active-bg:  $black;
$carousel-dark-caption-color:        $black;
$carousel-dark-control-icon-filter:  invert(1) grayscale(100);

Ukusetshenziswa

Ngezibaluli zedatha

Use data attributes to easily control the position of the carousel. data-bs-slide accepts the keywords prev or next, which alters the slide position relative to its current position. Alternatively, use data-bs-slide-to to pass a raw slide index to the carousel data-bs-slide-to="2", which shifts the slide position to a particular index beginning with 0.

The data-bs-ride="carousel" attribute is used to mark a carousel as animating starting at page load. If you don’t use data-bs-ride="carousel" to initialize your carousel, you have to initialize it yourself. It cannot be used in combination with (redundant and unnecessary) explicit JavaScript initialization of the same carousel.

Via JavaScript

Call carousel manually with:

var myCarousel = document.querySelector('#myCarousel')
var carousel = new bootstrap.Carousel(myCarousel)

Options

Options can be passed via data attributes or JavaScript. For data attributes, append the option name to data-bs-, as in data-bs-interval="".

Name Type Default Description
interval number 5000 The amount of time to delay between automatically cycling an item. If false, carousel will not automatically cycle.
keyboard boolean true Whether the carousel should react to keyboard events.
pause string | boolean 'hover'

If set to 'hover', pauses the cycling of the carousel on mouseenter and resumes the cycling of the carousel on mouseleave. If set to false, hovering over the carousel won't pause it.

On touch-enabled devices, when set to 'hover', cycling will pause on touchend (once the user finished interacting with the carousel) for two intervals, before automatically resuming. Note that this is in addition to the above mouse behavior.
ride string | boolean false Autoplays the carousel after the user manually cycles the first item. If set to 'carousel', autoplays the carousel on load.
wrap boolean true Whether the carousel should cycle continuously or have hard stops.
touch boolean true Whether the carousel should support left/right swipe interactions on touchscreen devices.

Methods

Asynchronous methods and transitions

All API methods are asynchronous and start a transition. They return to the caller as soon as the transition is started but before it ends. In addition, a method call on a transitioning component will be ignored.

See our JavaScript documentation for more information.

You can create a carousel instance with the carousel constructor, for example, to initialize with additional options and start cycling through items:

var myCarousel = document.querySelector('#myCarousel')
var carousel = new bootstrap.Carousel(myCarousel, {
  interval: 2000,
  wrap: false
})
Method Description
cycle Cycles through the carousel items from left to right.
pause Stops the carousel from cycling through items.
prev Cycles to the previous item. Returns to the caller before the previous item has been shown (e.g., before the slid.bs.carousel event occurs).
next Cycles to the next item. Returns to the caller before the next item has been shown (e.g., before the slid.bs.carousel event occurs).
nextWhenVisible Don't cycle carousel to next when the page isn't visible or the carousel or its parent isn't visible. Returns to the caller before the target item has been shown
to Cycles the carousel to a particular frame (0 based, similar to an array). Returns to the caller before the target item has been shown (e.g., before the slid.bs.carousel event occurs).
dispose Destroys an element's carousel. (Removes stored data on the DOM element)
getInstance Static method which allows you to get the carousel instance associated to a DOM element, you can use it like this: bootstrap.Carousel.getInstance(element)
getOrCreateInstance Static method which returns a carousel instance associated to a DOM element or create a new one in case it wasn't initialised. You can use it like this: bootstrap.Carousel.getOrCreateInstance(element)

Events

Bootstrap’s carousel class exposes two events for hooking into carousel functionality. Both events have the following additional properties:

  • direction: The direction in which the carousel is sliding (either "left" or "right").
  • relatedTarget: The DOM element that is being slid into place as the active item.
  • from: The index of the current item
  • to: The index of the next item

All carousel events are fired at the carousel itself (i.e. at the <div class="carousel">).

Event type Description
slide.bs.carousel Fires immediately when the slide instance method is invoked.
slid.bs.carousel Fired when the carousel has completed its slide transition. 
var myCarousel = document.getElementById('myCarousel')

myCarousel.addEventListener('slide.bs.carousel', function () {
  // do something...
})