我正在使用 Bootstrap 轮播控件,我需要使用比幻灯片更少的指示器。因此,例如对于幻灯片 1 - 3,第一个指示器将处于事件状态。当我点击另一个指标时,它会跳到幻灯片 4。
我试图通过在 HTML 中包含所有指示器来解决它,但使用 display: none
隐藏其中一些。然后用JS找到active slide,去掉.active
类,添加到右边的indicator。
HTML
<!-- Indicators -->
<ul class="carousel-indicators">
<!-- For these three only #a indicator should be active -->
<li id="a" data-target="#carousel" data-slide-to="0" class="active"></li>
<li id="a1" class="hidden" data-target="#carousel" data-slide-to="1"></li>
<li id="a2" class="hidden" data-target="#carousel" data-slide-to="2"></li>
<!-- another group -->
<li id="b" data-target="#carousel" data-slide-to="3"></li>
</ul>
JavaScript
$('#carousel').on('slid.bs.carousel', function (e) {
if ($("#a1").hasClass("active")) {
$("#a1").removeClass("active");
$("#a").addClass("active");
} else if ($("#a2").hasClass("active")) {
$("#a2").removeClass("active");
$("#a").addClass("active");
}
});
这是一个例子 - https://jsfiddle.net/9x5u7kjx/2/
我认为这根本不是一个优雅的解决方案,那么有没有更好的方法呢?
编辑: 我将尝试更清楚地解释它。
例如有12张幻灯片,一张一张自动滑动。它们可以由箭头(左和右)控制。 但只有 4 个指标(轮播下方的那些圆圈)。对于幻灯片 1 - 3,第一个指示器应该处于事件状态,对于 4 - 6,第二个指示器应处于事件状态,依此类推。
所以我可以使用箭头一项一项地滑动,但是当我单击第二个指示器时,轮播将跳到幻灯片 4。
看看这个例子,它可以正常工作,但我认为这个问题可以更好地解决。
最佳答案
带有 4 个指示器而不是 12 个的轮播
1。标准指标。 CSS 技巧
Bootstrap 的指标是透明的,除了活跃的指标。因此,我将它们放在一起,并收到两堆,每堆三个指标。
第二个和第三个指标位于第一个指标的下方。因此,只有第一个指标对点击使用react。
.carousel-indicators > li:nth-of-type(3n+2),
.carousel-indicators > li:nth-of-type(3n+3) {
margin-left: -15px;
position: relative;
z-index: -1;
}
Bootstrap 的事件指示器比非事件指示器宽 2 个像素。它需要比其他移动多 1 个像素。
.carousel-indicators > li.active:nth-of-type(3n+2),
.carousel-indicators > li.active:nth-of-type(3n+3) {
margin-left: -16px;
}
查看结果:
https://jsfiddle.net/glebkema/346n1cwo/
@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css');
.carousel-inner > .item > img {
width: 100%;
}
.carousel-indicators > li:nth-of-type(3n+2),
.carousel-indicators > li:nth-of-type(3n+3) {
margin-left: -15px;
position: relative;
z-index: -1;
}
.carousel-indicators > li.active:nth-of-type(3n+2),
.carousel-indicators > li.active:nth-of-type(3n+3) {
margin-left: -16px;
}
<div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
<!-- Indicators -->
<ol class="carousel-indicators">
<li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
<li data-target="#carousel-example-generic" data-slide-to="1"></li>
<li data-target="#carousel-example-generic" data-slide-to="2"></li>
<li data-target="#carousel-example-generic" data-slide-to="3"></li>
<li data-target="#carousel-example-generic" data-slide-to="4"></li>
<li data-target="#carousel-example-generic" data-slide-to="5"></li>
<li data-target="#carousel-example-generic" data-slide-to="6"></li>
<li data-target="#carousel-example-generic" data-slide-to="7"></li>
<li data-target="#carousel-example-generic" data-slide-to="8"></li>
<li data-target="#carousel-example-generic" data-slide-to="9"></li>
<li data-target="#carousel-example-generic" data-slide-to="10"></li>
<li data-target="#carousel-example-generic" data-slide-to="11"></li>
</ol>
<!-- Wrapper for slides -->
<div class="carousel-inner" role="listbox">
<div class="item active"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=0" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=1" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=2" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=3" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=4" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=5" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=6" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=7" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=8" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=9" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=10" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=11" alt=""></div>
</div>
<!-- Controls -->
<a class="left carousel-control" href="#carousel-example-generic" 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="#carousel-example-generic" role="button" data-slide="next">
<span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
<div class="alert text-center">
Bootstrap carousel with 4 standard indicators instead of 12 by CSS trick
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
2。自定义指标。 jQuery
https://jsfiddle.net/glebkema/0L97fuzw/
$( document ).ready(function() {
var CLASS_CAROUSEL = '#carousel-example-generic';
var CLASS_INDICATORS = '#carousel-indicators';
var CLASS_ACTIVE = CLASS_INDICATORS + '>li.active';
var selectCarousel = $(CLASS_CAROUSEL);
selectCarousel.on('slide.bs.carousel', function (e) {
var indexTarget = $(e.relatedTarget).index();
indexTarget = indexTarget - indexTarget % 3;
var selectTarget = $(CLASS_INDICATORS + '>li[data-slide-to="' + indexTarget + '"]');
if ( !selectTarget.hasClass('active') ) {
$(CLASS_ACTIVE).removeClass('active');
selectTarget.addClass('active');
}
});
});
@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css');
.carousel-inner > .item > img {
width: 100%;
}
/* design */
.carousel-indicators > li,
.carousel-indicators > li.active{
border-radius: 0;
border-width: 1px;
height: 30px;
line-height: 28px; /* = height - 2 * border-width */
margin: 0 1px;
text-indent: 0;
width: 70px;
}
.carousel-indicators > li {
border-color: #666;
color: #666;
}
.carousel-indicators > li:hover {
background-color: #fee;
}
.carousel-indicators > li.active {
border-color: red;
color: red;
}
/* location */
.carousel-indicators {
margin: 6px 0;
position: static;
width: 100%;
}
<div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
<!-- Wrapper for slides -->
<div class="carousel-inner" role="listbox">
<div class="item active"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=0" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=1" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=2" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=3" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=4" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=5" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=6" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=7" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=8" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/9c6/fff/?text=9" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/c69/fff/?text=10" alt=""></div>
<div class="item"><img class="img-responsive" src="//placehold.it/1200x300/69c/fff/?text=11" alt=""></div>
</div>
<!-- Controls -->
<a class="left carousel-control" href="#carousel-example-generic" 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="#carousel-example-generic" role="button" data-slide="next">
<span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
<!-- Indicators -->
<ol id="carousel-indicators" class="carousel-indicators">
<li data-target="#carousel-example-generic" data-slide-to="0" class="active">0 - 2</li>
<li data-target="#carousel-example-generic" data-slide-to="3">3 - 5</li>
<li data-target="#carousel-example-generic" data-slide-to="6">6 - 8</li>
<li data-target="#carousel-example-generic" data-slide-to="9">9 - 11</li>
</ol>
<div class="alert text-center">
Bootsrap carousel with 4 custom indicators instead of 12 by jQuery
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
关于javascript - Bootstrap 轮播链接到一个指示器的更多幻灯片,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37458946/