无法在 jquery 中为图像滑块设置动画

Question

我是 javascript/jquery 的新手，我正在构建图像滑块。我似乎无法让图像动画化。我不确定这里出了什么问题。

我一直试图做的是获取活动幻灯片，然后滑动下一个兄弟并为其设置动画，但我得到的结果是第一个图像设置动画然后停止。

<div id="container">
<header>
    header is here
</header>
<div id="carousel">
<div class="sliderbuttons">
    <input type="button" name="next" id="next" value=" > ">
    <input type="button" name="next" id="prev" value=" < ">
    </div>
    <div class="slides">
        <img src="http://www.planwallpaper.com/static/images/4-Nature-Wallpapers-2014-1_ukaavUI.jpg" alt="image1" class="slide active">
        <img src="http://www.mrwallpaper.com/wallpapers/green-Rice-1600x900.jpg" alt="image2" class="slide">
        <img src="http://cdn.wonderfulengineering.com/wp-content/uploads/2016/01/nature-wallpapers-10.jpg" alt="image3" class="slide">
    </div>


</div>

</div>

CSS

html,body {
    height: 100%;
    position: relative;
}

*{
    box-sizing: border-box;
}

#container {
    width: 90%;
    margin: 0 auto;
    height: 100%;
}

header {
    background: black;
    height: 20px;
    padding: 1.5em;
    color: white;
}

#carousel {
    position: relative;
    margin: 0 auto;
    width: 45%;
    margin-top: 15px;
    height: 100%;

}

.slide {
    position: absolute;
    max-width: 100%;
    z-index: 0;
}
.sliderbuttons {
    }

#prev,#next {
    position: absolute;
    background-color: rgba(255, 148, 41, 0.68);
    box-shadow: 2px white;
    border:none;
    font-size: 2em;
    color: white;
    font-weight: bold;
/*  font-family: 'Baloo Tamma', cursive;
*/  padding:10px;
    top:15%;
    width: 10%;
    /*making the prev,next on top of content*/
    z-index: 2;
}
#prev {
    left:0;
}
#next {
    right:0;
        }

.active {
    z-index: 1;
}

Javascript

 $(document).ready(function(){

    setInterval(animateSlider(), 5000);
    });
    //configuration
    var currentSlide=activeSlide();
    var slides=$("#carousel .slides .slide");

    //get active slide index
    function activeSlide(){
        var activeSlide=$("#carousel .slides .active").index();
        return activeSlide;
    }

    function animateSlider() {
        var $current=slides.eq(activeSlide());
        var $next= $(".slides img:first");
        $next.addClass('active');

        $current.animate({opacity: 0.0}, 1000, 

            function () {
                    $current.removeClass('active');
                    $current.css({opacity: 1.0});
                });

Answer 1

试试这个 fiddle（做你需要的，但我认为还有其他缺陷）。在您的 html 中，您使用了“<”和“>”字符作为按钮文本，这会打断 html 的流程，因此您应该改用字符代码： < 变为 < 并且 > 变成 > www.w3schools.com/html/html_entities.asp

你的 js 也缺少一个结束 } 并且 jsfiddle 缺少一个 jquery 库调用（我希望 jsfiddle 可以更快地集成库）。希望对你有帮助。

$(document).ready(function(){
  setInterval(function(){ animateSlider() }, 5000);
});
//configuration
var currentSlide = activeSlide();
var slides = $("#carousel .slides .slide");

//get active slide index
function activeSlide(){
 var activeSlide=$("#carousel .slides .active").index();
 return activeSlide;
}

function animateSlider() {
//remove active class from previous element and assign it to the current one then animate it using animate() function
    var $current=slides.eq(activeSlide());
    var $next= $(".slides img:first");
        
    $next.addClass('active');
    
    $current.animate({opacity: 0.0}, 1000, function () {
                $current.removeClass('active');
                $current.css({opacity: 1});
            });
}

html,body {
 height: 100%;
 position: relative;
}

*{
 box-sizing: border-box;
}

#container {
 width: 90%;
 margin: 0 auto;
 height: 100%;
}

header {
 background: black;
 height: 20px;
 padding: 1.5em;
 color: white;
}

#carousel {
 position: relative;
 margin: 0 auto;
 width: 45%;
 margin-top: 15px;
 height: 100%;

}

.slide {
 position: absolute;
 max-width: 100%;
 z-index: 0;
}
.sliderbuttons {
 }

#prev,#next {
 position: absolute;
 background-color: rgba(255, 148, 41, 0.68);
 box-shadow: 2px white;
 border:none;
 font-size: 1em;
 color: white;
 font-weight: bold;
/* font-family: 'Baloo Tamma', cursive;
*/ padding:10px;
    top:15%;
 width: 10%;
 /*making the prev,next on top of content*/
 z-index: 2;
}
#prev {
 left:0;
}
#next {
 right:0;
  }

.active {
 z-index: 1;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>

<div id="container">
    <header>
        header is here
    </header>
    <div id="carousel">
    <div class="sliderbuttons">
        <input type="button" name="next" id="next" value="&gt;">
        <input type="button" name="next" id="prev" value="&lt;">
        </div>
        <div class="slides">
            <img src="http://www.planwallpaper.com/static/images/4-Nature-Wallpapers-2014-1_ukaavUI.jpg" alt="image1" class="slide active">
            <img src="http://www.mrwallpaper.com/wallpapers/green-Rice-1600x900.jpg" alt="image2" class="slide">
            <img src="http://cdn.wonderfulengineering.com/wp-content/uploads/2016/01/nature-wallpapers-10.jpg" alt="image3" class="slide">
        </div>
    
    
    </div>
    
    </div>

无法在 jquery 中为图像滑块设置动画

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