JavaScript轮播不工作
JavaScript轮播不工作
提问于 2016-05-31 10:51:43
所以我想做一个全屏的旋转木马来做演示。我不是一个专业的程序员，我正处于学习阶段。我有这个代码，我有，正如你所看到的，错误和旋转木马都坏了，我不知道为什么。我希望能得到一些指导或帮助。
var $item = $('.carousel .item');
var $wHeight = $(window).height();
$item.height($wHeight);
$item.addClass('full-screen');
var $numberofSlides = $('.item').length;
var $currentSlide = Math.floor((Math.random() * $numberofSlides));
$('.carousel-indicators li').each(function(){
var $slideValue = $(this).attr('data-slide-to');
if($currentSlide == $slideValue) {
$(this).addClass('active');
$item.eq($slideValue).addClass('active');
} else {
$(this).removeClass('active');
$item.eq($slideValue).removeClass('active');
}
});
$('.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({
interval: 6000,
pause: "false"
});h3 {
display: inline-block;
padding: 10px;
background: #B9121B;
border-top-left-radius: 10px;
border-top-right-radius: 10px;
}
.full-screen {
background-size: cover;
background-position: center;
background-repeat: no-repeat;
}<!DOCTYPE html>
<html>
<head>
<script src="sliderjava.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="sliderstyle.css">
</head>
<body>
<div id="mycarousel" class="carousel slide" data-ride="carousel">
<!-- Indicadores -->
<ol class="carousel-indicators">
<li data-target="#mycarousel" data-slide-to="0"></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>
<!-- 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>
<!-- Controlos -->
<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>
</body>
</html>
回答 2
Stack Overflow用户
发布于 2016-05-31 10:53:52
请添加jquery引用，它应该在页面中的carouse脚本之前。
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.12.2.min.js"></script>Stack Overflow用户
发布于 2016-05-31 11:03:59
您正在使用bootstraps的carousel，但不幸的是，您还没有附加任何必要的东西来使其工作。请做以下事情，使您的旋转木马工作。
- Attach library.
- Attach Bootstrap's css.
- Attach
jQueryBootstrap's javascript.
var $item = $('.carousel .item');
var $wHeight = $(window).height();
$item.height($wHeight);
$item.addClass('full-screen');
var $numberofSlides = $('.item').length;
var $currentSlide = Math.floor((Math.random() * $numberofSlides));
$('.carousel-indicators li').each(function(){
var $slideValue = $(this).attr('data-slide-to');
if($currentSlide == $slideValue) {
$(this).addClass('active');
$item.eq($slideValue).addClass('active');
} else {
$(this).removeClass('active');
$item.eq($slideValue).removeClass('active');
}
});
$('.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({
interval: 6000,
pause: "false"
});h3 {
display: inline-block;
padding: 10px;
background: #B9121B;
border-top-left-radius: 10px;
border-top-right-radius: 10px;
}
.full-screen {
background-size: cover;
background-position: center;
background-repeat: no-repeat;
}<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<script src="sliderjava.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="sliderstyle.css">
</head>
<body>
<div id="mycarousel" class="carousel slide" data-ride="carousel">
<!-- Indicadores -->
<ol class="carousel-indicators">
<li data-target="#mycarousel" data-slide-to="0"></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>
<!-- 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>
<!-- Controlos -->
<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>
</body>
</html>
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/37543662
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