请检查代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0,maximum-scale=1,minimum-scale=1,user-scalable=no">
    <title>Document</title>
    <link rel="stylesheet" href="js/js/swiper/idangerous.swiper2.7.6.css">
    <link rel="stylesheet" href="css/index.css">
</head>
<body>
    <div class="swiper-container">
        <div class="swiper-wrapper">
            <div class="swiper-slide bg-1">1</div>
            <div class="swiper-slide bg-2">2</div>
            <div class="swiper-slide bg-3">3</div>
        </div>
    </div>

    <script src="js/js/swiper/idangerous.swiper2.7.6.min.js"></script>
    <script src="js/js/swiper/idangerous.swiper.progress.min.js"></script>
    <script src="js/js/index.js"></script>
</body>
</html>

index.css

@charset "utf-8";

* {
    margin: 0;
    left: 0;
}

html,
body {
    width: 100%;
    height: 100%;
}

.swiper-container {
    width: 100%;
    height: 100%;
}

.swiper-wrapper {
    width: 100%;
    height: 100%;
}

.swiper-slide {
    width: 100%;
    height: 100%;
}

.bg-1 {
    background: url('http://img1.sycdn.imooc.com/climg//59f2f3c60001e51206000600.jpg');
}

.bg-2 {
    background: url('http://img1.sycdn.imooc.com/climg//59f2f3dc0001512e06000533.jpg');
}

.bg-3 {
    background: url('http://img1.sycdn.imooc.com/climg//59f2f3fb0001725305000707.jpg');
}

index.js

var mySwiper = new Swiper('.swiper-container', {
  progress: true,
  onProgressChange: function (swiper) {
    for (var i = 0; i < swiper.slides.length; i++) {
      var slide = swiper.slides[i];
      var progress = slide.progress;
      var translate, boxShadow;
      if (progress > 0) {
        translate = progress * swiper.width;
        boxShadowOpacity = 0;
      } else {
        translate = 0;
        boxShadowOpacity = 1 - Math.min(Math.abs(progress), 1);
      }
      slide.style.boxShadow = '0px 0px 10px rgba(0,0,0,' + boxShadowOpacity + ')';
      swiper.setTransform(slide, 'translate3d(' + (translate) + 'px,0,0)');
    }
  },
  onTouchStart: function (swiper) {
    for (var i = 0; i < swiper.slides.length; i++) {
      swiper.setTransition(swiper.slides[i], 0);
    }
  },
  onSetWrapperTransition: function (swiper, speed) {
    for (var i = 0; i < swiper.slides.length; i++) {
      swiper.setTransition(swiper.slides[i], speed);
    }
  }
})
// Set Z-Indexes
for (var i = 0; i < mySwiper.slides.length; i++) {
  mySwiper.slides[i].style.zIndex = i;
}