如何将滑块按钮放置在页面的最左侧和右侧答案

【问题标题】：How to place the slider button to the far left and right hand side of the page如何将滑块按钮放置在页面的最左侧和右侧
【发布时间】：2018-08-09 13:50:46
【问题描述】：

我最近在我的网站中放置了一个滑块演示文稿，问题是我希望它像横幅一样从最左边到最右边覆盖它，并且还希望调整图像大小以适应横幅。这是迄今为止滑块的图片：

还想知道图像和滑块是否也可以根据网页的大小自动调整大小。这样它对移动设备友好，并且当它不是全屏时，网站不会乱七八糟。

HTML：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Croydon Cycles</title>
    <link rel="stylesheet" href="shop-style.css">
    <link rel="shortcut icon" type="image/png" href="images/favicon.png">
    <link href="https://fonts.googleapis.com/css?family=Karla" rel="stylesheet">
    <link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
    <script src="https://code.jquery.com/jquery-3.3.1.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
    <script src="parallax.min.js"></script>
</head>


<!DOCTYPE html>
<html lang="en">

<body>
    <div class="wrapper">
        <header>
            <nav>
                <div class="menu-icon">
                    <i class="fa fa-bars fa-2x"></i>
                </div>
                <div class="logo">
                    Croydon Cycles
                </div>
                <div class="menu">
                    <ul>
                        <li><a href="#">Home</a></li>
                        <li><a href="#">About</a></li>
                        <li><a href="#">Shop</a></li>
                        <li><a href="#">Contact</a></li>
                    </ul>
                </div>
            </nav>
        </header>
        <div class="slideshow-container">
            <div class="myslides fade">
                <div class="numbers">1 / 4</div>
                <div class="slider-1">
                    <img class="Fit" src="images/slider-1.jpg">
                </div>
                <div class="caption">Text 1</div>
            </div>
            <div class="myslides fade">
                <div class="numbers">2 / 4</div>
                <div class="slider-2">
                    <img src="images/2.jpg">
                </div>
                <div class="caption">Text 2</div>
            </div>
        <div class="myslides fade">
            <div class="numbers">3 / 4</div>
            <div><img src="images/3.jpg"></div>
            <div class="caption">Text 3</div>
        </div>
        <div class="myslides fade">
            <div class="numbers">4 / 4</div>
            <div><img src="images/4.jpg"></div>
            <div class="caption">Text 4</div>
        </div>
        <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
        <a class="next" onclick="plusSlides(1)">&#10095;</a>
    </div>
    <br>
    <div style="text-align:center">
        <span class="dots" onclick="currentSlide(1)"></span> 
        <span class="dots" onclick="currentSlide(2)"></span> 
        <span class="dots" onclick="currentSlide(3)"></span> 
        <span class="dots" onclick="currentSlide(4)"></span> 
    </div>
    <script type="text/javascript">
        var slideIndex = 1;
        showSlide(slideIndex);

        function plusSlides(n){
            showSlide(slideIndex += n);
        }

        function currentSlide(n) {
            showSlide(slideIndex = n);
        }

        function showSlide(n){
            var i;
            var slides = document.getElementsByClassName("myslides");
            var dots = document.getElementsByClassName("dots");

            if (n > slides.length) { slideIndex = 1};

            if (n < 1) { slideIndex = slides.length};

            for (i=0;i<slides.length;i++) {
                slides[i].style.display = "none";
            };

            for (i=0;i<dots.length;i++) {
                dots[i].className = dots[i].className.replace(" active","");
            };

            slides[slideIndex-1].style.display = "block";
            dots[slideIndex-1].className += " active";
        }
    </script>
    <div class="content">
        <p> Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
        <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
    </div>
</div>
<script type="text/javascript">
    // Menu-toggle button
    $(document).ready(function() {
        $(".menu-icon").on("click", function() {
            $("nav ul").toggleClass("showing");
        });
    });

    // Scrolling Effect
    $(window).on("scroll", function() {
        if($(window).scrollTop()) {
            $('nav').addClass('black');
        }
        else {
            $('nav').removeClass('black');
        }
    })
</script>
</body>
</html>

CSS：

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    font-family: verdana,sans-serif;
    margin: 0;
}

body {
    font-family: "Helvetica Neue",sans-serif;
    font-weight: lighter;
}

header {
    width: 100%;
    height: 60px;
    background: url(hero.jpg) no-repeat 50% 50%;
    background-size: cover;
}

.content {
    width: 94%;
    margin: 4em auto;
    font-size: 20px;
    line-height: 30px;
    text-align: justify;
}


.logo {
    line-height: 60px;
    position: fixed;
    float: left;
    margin: 16px 46px;
    color: #fff;
    font-weight: bold;
    font-size: 20px;
    letter-spacing: 2px;
}

nav {
    position: fixed;
    width: 100%;
    line-height: 60px;
    z-index:2;
}

nav ul {
    line-height: 60px;
    list-style: none;
    background: rgba(0, 0, 0, 0);
    overflow: hidden;
    color: #fff;
    padding: 0;
    text-align: right;
    margin: 0;
    padding-right: 40px;
    transition: 1s;
}

nav.black ul {
    background: #000;
}

nav ul li {
    display: inline-block;
    padding: 16px 40px;;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    font-size: 16px;
}

.menu-icon {
    line-height: 60px;
    width: 100%;
    background: #000;
    text-align: right;
    box-sizing: border-box;
    padding: 15px 24px;
    cursor: pointer;
    color: #fff;
    display: none;
}

@media(max-width: 786px) {

    .logo {
          position: fixed;
          top: 0;
          margin-top: 16px;
    }

    nav ul {
          max-height: 0px;
          background: #000;
    }

    nav.black ul {
          background: #000;
    }

    .showing {
          max-height: 34em;
    }

    nav ul li {
          box-sizing: border-box;
          width: 100%;
          padding: 24px;
          text-align: center;
    }

    .menu-icon {
          display: block;
    }

}

body{
    font-family: verdana,sans-serif;

    margin: 0;

}

.slideshow-container{
    width: 800px;
    position: relative;
    margin: auto;
}

.numbers{
    position: absolute;
    top: 0;
    color: #f2f2f2;
    padding: 8px 12px;
    font-size: 12px;
}

.myslides{
    display: none;
}

.prev , .next{
    position: absolute;
    top: 50%;
    font-size: 18px;
    font-weight: bold;
    padding: 16px;
    margin-top: -22px;
    border-radius: 0 3px 3px 0;
    color: #fff;
    cursor: pointer;
}

.next{
    right: 0;
    border-radius: 3px 0 0 3px;
}

.prev:hover,.next:hover{
    background-color: rgba(0,0,0,0.8);
}

.caption{
    text-align: center;
    position: absolute;
    bottom: 8px;
    width: 100%;
    color: #f2f2f2;
    font-size: 15px;
    padding: 8px 22px;
}

.dots{
    width: 13px;
    height: 13px;
    background: gray;
    display: inline-block;
    border-radius: 50%;
    cursor: pointer;
}

.fade{
    animation-name:fade;
    animation-duration:1.5s;
}

@keyframes fade{
    from {opacity: 0.4;}
    to {opacity: 1;}
}

.active, .dot:hover {
    background-color: #333;
}

.slider-1 {
    display: grid;
    height: 100%;
    z-index:0;
}

.Fit {
    max-width: 100%;
    max-height: 100vh;
    margin: auto;
    z-index:0;  
}

【问题讨论】：

标签： javascript html css

【解决方案1】：

您的滑块只有 800 像素大，并且 prev 和 next 从中确定它们的位置，因此您需要一个更大的容器让它们获得相对于它的位置。

您可以添加一个宽度为 100% 的容器并将您的按钮移动到该容器。

.slideshow {

    width: 100%;

    position: relative;

    margin: auto;

}

<div class="slideshow">
  <div class="slideshow-container">
		....
  </div>
  <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
  <a class="next" onclick="plusSlides(1)">&#10095;</a>
</div>

【讨论】：

非常感谢，非常感谢。