本页面内容最后的红色部分有惊喜哦!
最近在做一个活动页面,要求触摸切换图片时,默认在可视区域中显示三张图片,其中中间的一张图片比其他两张都大且全部显示,而其他两张图片只显示部分即可,于是就想到了swiper这个不依赖于任何js库的插件,但是其官网上没有相应的效果,只有那种可以同时显示三张的demo。但是产品说一定要那种效果,其他的效果不好看,于是我就上网查资料,还真让我找到了解决的办法。如下图:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="format-detection" content="telephone=no">
<title>互融CLUB</title>
<link rel="stylesheet" href="http://m.hurongclub.com/Resource/css/base_new.css">
<link rel="stylesheet" href="http://m.hurongclub.com/Resource/css/swiper.min.css">
<script src="http://m.hurongclub.com/Resource/js/zepto.min.js"></script>
<script>
//计算根节点HTML的字体大小
function htmlFontsize(){
var deviceWidth = document.documentElement.clientWidth;
if(deviceWidth > 750){
deviceWidth = 750;
}
document.documentElement.style.fontSize = deviceWidth / 7.5 + "px";
}
//根节点HTML的字体大小初始化
htmlFontsize();
$(window).resize(function(){
htmlFontsize();
});
</script>
<style>
body{background: #f4664b;font-size:.14rem;}
.swiper-container{height:8.2rem;}
#investproSwiper{margin-top: 0.52rem;}
#investproSwiper .swiper-slide{width:5rem;height:7.25rem;}
#investproSwiper .swiper-slide .investpro{width:4.61rem;height:6.37rem;background-size: 100% 100%;background-repeat: no-repeat;margin-top: 0.58rem;margin-left: 0.19rem;-webkit-transition: all 0.5s linear;}
#investproSwiper .swiper-slide-active .investpro{width:5.16rem;height:7.25rem;margin-left:-.08rem;margin-top:.12rem;}
#investproSwiper .swiper-slide .hrplan_slide{background-image: url(images/hrplan_small.png);}
#investproSwiper .swiper-slide-active .hrplan_slide{background-image: url(images/hrplan_big.png);}
#investproSwiper .swiper-slide .newhand_slide{background-image: url(images/newhand_small.png);}
#investproSwiper .swiper-slide-active .newhand_slide{background-image: url(images/newhand_big.png);}
#investproSwiper .swiper-slide .sxm_slide{background-image: url(images/sxm_small.png);}
#investproSwiper .swiper-slide-active .sxm_slide{background-image: url(images/sxm_big.png);}
.swiper-slide a{width:3.8rem;height: .7rem;background: #eb4e39;display: block;font-size: .36rem;color: #fff;text-align: center;line-height: .7rem;border-radius: .08rem;position: absolute;left: 0;right: 0;margin: auto;bottom: .85rem;z-index: 2;}
.swiper-slide-active .investpro a{width: 4.33rem;height: .8rem;line-height: .8rem;bottom: .4rem;}
.swiper-container-horizontal>.swiper-pagination{height:.5rem;text-align:center;bottom:0;}
.swiper-pagination-bullet{background:#fff;border-radius:50%;width:.12rem;height:.12rem;margin-left:.18rem;opacity:1;}
.swiper-pagination-bullet-active{background:#e04531;}
.investproTab{width:4.6rem;height:6.37rem;position: absolute;top: 0.58rem;z-index: 2;opacity: 0;}
.investpro-prev{left:-3.6rem;}
.investpro-next{right:-3.6rem;}
</style>
</head>
<body>
<div class="swiper-container" id="investproSwiper">
<div class="swiper-wrapper">
<div class="swiper-slide">
<div class="investpro newhand_slide"><a href="##">立即投资</a></div>
</div>
<div class="swiper-slide">
<div class="investpro sxm_slide"><a href="##">立即投资</a></div>
</div>
<div class="swiper-slide">
<div class="investpro hrplan_slide"><a href="##">立即投资</a></div>
</div>
</div>
<div class="swiper-pagination"></div>
<div class="investproTab investpro-prev" id="investpro-prev"></div>
<div class="investproTab investpro-next" id="investpro-next"></div>
</div>
<script src="http://m.hurongclub.com/Resource/js/swiper-3.2.5.min.js"></script>
<script>
var abcSwiper = new Swiper("#investproSwiper", {
slidesPerView: 'auto', //设置slider容器能够同时显示的slides数量
centeredSlides: true, //设定为true时,活动块会居中,而不是默认状态下的居左。
loop: true,
speed: 500,
noSwiping: false, //设置为true时禁止切换
paginationClickable: false,
pagination : '.swiper-pagination',
prevButton:'#investpro-prev',
nextButton:'#investpro-next'
});
</script>
</body>
</html>
以上代码中,最开始的那段js是作为移动端的自适应而写的,不是本文的重点,最后的那段js是swiper官方给出的插件的初始化调用方法,也不多说,最主要的是css代码:
#investproSwiper .swiper-slide{width:5rem;height:7.25rem;}
#investproSwiper .swiper-slide .investpro{width:4.61rem;height:6.37rem;background-size: 100% 100%;background-repeat: no-repeat;margin-top: 0.58rem;margin-left: 0.19rem;-webkit-transition: all 0.5s linear;}
#investproSwiper .swiper-slide-active .investpro{width:5.16rem;height:7.25rem;margin-left:-.08rem;margin-top:.12rem;}
#investproSwiper .swiper-slide .hrplan_slide{background-image: url(images/hrplan_small.png);}
#investproSwiper .swiper-slide-active .hrplan_slide{background-image: url(images/hrplan_big.png);}
#investproSwiper .swiper-slide .newhand_slide{background-image: url(images/newhand_small.png);}
#investproSwiper .swiper-slide-active .newhand_slide{background-image: url(images/newhand_big.png);}
#investproSwiper .swiper-slide .sxm_slide{background-image: url(images/sxm_small.png);}
#investproSwiper .swiper-slide-active .sxm_slide{background-image: url(images/sxm_big.png);}
它的原理就是中间放大且显示全部图片的地方放置的是大图,而其他两张只显示部分图片的地方放置的是该两张图片的小图,待这两张中任何一张图片被切换到中间位置时,显示的就是它的大图了,起主要作用的就是swiper的这个swiper-slide-active
class属性,当当前元素被添加上了这个class后,那么它的子元素出现的就是大图了。不过,你事先要给每张图片都准备一张大图和一张小图。
最后,如果想让两边只显示部分图片的透明度低一点,我们可以这样改写swiper的初始化调用方法:
<script>
var abcSwiper = new Swiper("#investproSwiper", {
slidesPerView: 'auto', //设置slider容器能够同时显示的slides数量
centeredSlides: true, //设定为true时,活动块会居中,而不是默认状态下的居左。
loop: true,
speed: 500,
noSwiping: false, //设置为true时禁止切换
watchSlidesProgress: true, //开启这个参数来计算每个slide的progress(进度、进程)
paginationClickable: false,
pagination : '.swiper-pagination',
prevButton:'#investpro-prev',
nextButton:'#investpro-next',
onProgress: function (a) { var b, c, d; for (b = 0; b < a.slides.length; b++) c = a.slides[b], d = c.progress, scale = 1 - Math.min(Math.abs(.2 * d), 1), es = c.style, es.opacity = 1 - Math.min(Math.abs(d / 2), 1), es.webkitTransform = es.MsTransform = es.msTransform = es.MozTransform = es.OTransform = es.transform = "translate3d(0px,0," + -Math.abs(150 * d) + "px)" },
onSetTransition: function (a, b) { for (var c = 0; c < a.slides.length; c++) es = a.slides[c].style, es.webkitTransitionDuration = es.MsTransitionDuration = es.msTransitionDuration = es.MozTransitionDuration = es.OTransitionDuration = es.transitionDuration = b + "ms" }
});
</script>
如下图所示:
以下附上源代码:
swiper默认显示三个,中间放大且显示全部图片两边显示部分图片
以下更新于2017年7月20日:
上边的那种方法在实现起来有点麻烦,不仅要准备大图,还要准备小图,增加了工作量,最近在项目开发中,突然发现了 swiper 官网上其实早就有这样的案例了,只是我疏于仔细查找,所以才搞的这么麻烦,以下我就给大家贴出swiper实例吧(这样的效果和用手机浏览更配哦!):
3D 覆盖流效果