移动端用swiper实现上下滑动整个页面，swiper头尾循环显示（用swiper3实现第一个slide只能向右或者向下滑，而不能向上或者向左滑）

代码如下

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Swiper demo</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1">

    <!-- Link Swiper's CSS -->
    <link rel="stylesheet" href="../dist/css/swiper.min.css">

    <!-- Demo styles -->
    <style>
    html, body {
        position: relative;
        height: 100%;
    }
    body {
        background: #eee;
        font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
        font-size: 14px;
        color:#000;
        margin: 0;
        padding: 0;
    }
    .swiper-container {
        width: 100%;
        height: 100%;
    }
    .swiper-slide {
        text-align: center;
        font-size: 18px;
        background: #fff;

        /* Center slide text vertically */
        display: -webkit-box;
        display: -ms-flexbox;
        display: -webkit-flex;
        display: flex;
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        -webkit-justify-content: center;
        justify-content: center;
        -webkit-box-align: center;
        -ms-flex-align: center;
        -webkit-align-items: center;
        align-items: center;
    }
    </style>
</head>
<body>
    <!-- Swiper -->
    <div class="swiper-container">
        <div class="swiper-wrapper">
            <div class="swiper-slide">Slide 1</div>
            <div class="swiper-slide">Slide 2</div>
            <div class="swiper-slide">Slide 3</div>

        </div>
    </div>

    <!-- Swiper JS -->
    <script src="../dist/js/swiper.min.js"></script>

    <!-- Initialize Swiper -->
    <script>
        var index;
    var myswiper = new Swiper('.swiper-container', {
        direction: 'vertical',
        loop: true,
        allowSwipeToPrev : true,
//很关键，如果不写，下面回调函数无法使用allowSwiperToPrev实例
        //第一种
        // onSlideChangeStart: function(swiper){
        //     var index = swiper.activeIndex;
        //     console.log(index);
        //     if (index == 1 || index == 4) {
        //          //swiper.lockSwipeToPrev();
        //         // swiper.loop = true;
        //         swiper.allowSwipeToPrev = false;
        //     }
        //     else {
        //         //swiper.unlockSwipeToPrev();
        //         swiper.allowSwipeToPrev = true;
        //
        //     }
        //
        // },
    //第二种
         onTransitionStart: function(swiper){
             var index = swiper.activeIndex;
             console.log(index);
             if (index == 1 || index == 4) {
                 //swiper.lockSwipeToPrev();
                 // swiper.loop = true;
                 swiper.allowSwipeToPrev = false;
             }
             else {
                 //swiper.unlockSwipeToPrev();
                 swiper.allowSwipeToPrev = true;

             }
        }, 
        // 第三种
        // onTransitionStart: function(swiper){
        //     var index = swiper.activeIndex;
        //     console.log(index);
        //     if (index == 1 || index == 4) {
        //         swiper.lockSwipeToPrev();
        //         swiper.loop = true;
        //此时loop失效，需要重新激活loop
        //       
        //     }
        //     else {
        //         swiper.unlockSwipeToPrev();
        //       
        //
        //     }
        // }
        

    });
    </script>
</body>
</html>

swiper4代码如下：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Swiper demo</title>
  <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1">

  <!-- Link Swiper's CSS -->
  <link rel="stylesheet" href="../dist/css/swiper.min.css">

  <!-- Demo styles -->
  <style>
    html, body {
      position: relative;
      height: 100%;
    }
    body {
      background: #eee;
      font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
      font-size: 14px;
      color:#000;
      margin: 0;
      padding: 0;
    }
    .swiper-container {
      width: 100%;
      height: 100%;
    }
    .swiper-slide {
      text-align: center;
      font-size: 18px;
      background: #fff;

      /* Center slide text vertically */
      display: -webkit-box;
      display: -ms-flexbox;
      display: -webkit-flex;
      display: flex;
      -webkit-box-pack: center;
      -ms-flex-pack: center;
      -webkit-justify-content: center;
      justify-content: center;
      -webkit-box-align: center;
      -ms-flex-align: center;
      -webkit-align-items: center;
      align-items: center;
    }
  </style>
</head>
<body>
  <!-- Swiper -->
  <div class="swiper-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide">Slide 1</div>
      <div class="swiper-slide">Slide 2</div>
      <div class="swiper-slide">Slide 3</div>
    </div>
    <!-- Add Pagination -->
    <div class="swiper-pagination"></div>
  </div>

  <!-- Swiper JS -->
  <script src="../dist/js/swiper.min.js"></script>

  <!-- Initialize Swiper -->
  <script>
    var swiper = new Swiper('.swiper-container', {
      direction: 'vertical',
      pagination: {
        el: '.swiper-pagination',
        clickable: true,
      },
        loop: true,
        on: {
            slideChangeTransitionStart: function slideChangeTransitionStart() {
                if (this.activeIndex == 1 || this.activeIndex == 4) {
                    this.allowSlidePrev = false;
                } else {
                    this.allowSlidePrev = true;
                }
            }

        }
    });
  </script>
</body>
</html>

移动端用swiper实现上下滑动整个页面，swiper头尾循环显示（用swiper3实现第一个slide只能向右或者向下滑，而不能向上或者向左滑）

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