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>