写一个swiper 获取当前下标
时间: 2024-05-01 22:20:26 浏览: 16
好的,这里是一个获取当前swiper下标的示例代码:
```javascript
var swiper = new Swiper('.swiper-container', {
on: {
slideChange: function () {
var index = this.activeIndex;
console.log('当前下标为:' + index);
},
},
});
```
以上代码通过监听swiper的slideChange事件来获取当前swiper下标,然后在控制台输出该下标。注意,需要先引入Swiper插件库。
相关问题
vue-awesome-swiper当前轮播下标
要获取vue-awesome-swiper当前轮播下标,可以在swiper的slideChangeTransitionEnd事件中使用this.activeIndex属性来获取当前激活的slide的下标。具体实现可以参考以下代码:
```
<template>
<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 class="swiper-pagination"></div>
</div>
</template>
<script>
import VueAwesomeSwiper from "vue-awesome-swiper";
import "swiper/css/swiper.css";
export default {
data() {
return {
swiperOptions: {
direction: "horizontal",
loop: true,
pagination: {
el: ".swiper-pagination",
clickable: true
}
},
activeIndex: 0
};
},
components: {
VueAwesomeSwiper
},
methods: {},
mounted() {},
created() {},
watch: {},
computed: {},
swiper: null
};
</script>
<style>
.swiper-container {
width: 100%;
height: 100%;
}
.swiper-slide {
text-align: center;
font-size: 18px;
background: #fff;
display: flex;
justify-content: center;
align-items: center;
}
</style>
```
在上述代码中,我们在data中声明了activeIndex属性,并在swiperOptions中的slideChangeTransitionEnd事件中将当前激活的slide的下标赋值给activeIndex属性。这样我们就可以在组件中使用activeIndex属性来获取当前轮播下标了。
手写一个swiper
好的,下面是一个简单的手写swiper实现:
```html
<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 class="swiper-slide">Slide 4</div>
<div class="swiper-slide">Slide 5</div>
</div>
</div>
```
```css
.swiper-container {
position: relative;
height: 300px;
overflow: hidden;
}
.swiper-wrapper {
position: absolute;
width: 100%;
height: 100%;
display: flex;
transition: transform 0.3s ease-out;
}
.swiper-slide {
width: 100%;
height: 100%;
flex-shrink: 0;
margin-right: 20px;
}
```
```js
const container = document.querySelector('.swiper-container');
const wrapper = document.querySelector('.swiper-wrapper');
const slides = document.querySelectorAll('.swiper-slide');
const slideWidth = slides[0].offsetWidth + 20; // 计算每个slide的宽度
let currentIndex = 0;
let isMoving = false;
// 移动到指定slide
function moveTo(index) {
if (index < 0 || index > slides.length - 1 || isMoving) return;
isMoving = true;
wrapper.style.transform = `translateX(-${slideWidth * index}px)`;
currentIndex = index;
setTimeout(() => {
isMoving = false;
}, 300);
}
// 绑定滑动事件
let startX, startY;
container.addEventListener('touchstart', (e) => {
startX = e.touches[0].clientX;
startY = e.touches[0].clientY;
});
container.addEventListener('touchmove', (e) => {
const deltaX = e.touches[0].clientX - startX;
const deltaY = e.touches[0].clientY - startY;
if (Math.abs(deltaX) > Math.abs(deltaY)) {
e.preventDefault();
wrapper.style.transform = `translateX(-${slideWidth * currentIndex - deltaX}px)`;
}
});
container.addEventListener('touchend', (e) => {
const deltaX = e.changedTouches[0].clientX - startX;
if (Math.abs(deltaX) > slideWidth / 3) {
moveTo(currentIndex + (deltaX > 0 ? -1 : 1));
} else {
moveTo(currentIndex);
}
});
// 初始化
wrapper.style.width = `${slideWidth * slides.length}px`;
moveTo(0);
```
以上代码实现了一个简单的手写swiper,支持滑动切换和左右箭头切换。需要注意的是,这里的样式和交互仅仅是做一个示例,实际使用中还需要考虑更多的细节问题,比如可配置性、性能优化等。
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