Vue滑动翻页组件swiper的实现---第二版

优化的点：

1、改变组件结构，滑动组件的宽度由100vw改为自定义

SwiperPage.vue

<template>
  <div class="ths_swiper-page">
    <t-swiper-wrap>
      <t-swiper-item>
        <div class="swiper" style="background: #ccc"><p>swiper1</p><p>swiper1</p></div>
      </t-swiper-item>
      <t-swiper-item>
        <div class="swiper" style="background: #eee"><p>swiper2</p></div>
      </t-swiper-item>
      <t-swiper-item>
        <div class="swiper" style="background: #aaa"><p>swiper3</p></div>
      </t-swiper-item>
    </t-swiper-wrap>
  </div>
</template>

<style lang='scss'>
.ths_swiper-page {
  .swiper{
    display: inline-block;
    width: 100vw; /*自定义宽度*/
  }
}
</style>

SwiperWrap.vue

<template>
  <div class="ths_swiper-wrap">
    <slot></slot>
  </div>
</template>

<style lang='scss'>
.ths_swiper-wrap {
  white-space: nowrap;
  display: inline-block;
  padding: 40px 0px;
  border: 1px solid #cccccc;
  font-size: 0;
}
</style>

SwiperItem.vue

<template>
  <div class="ths_swiper"
    ref="swiper"
    @touchstart="touchstart"
    @touchmove="touchmove"
    @touchend="touchend">
    <slot></slot>
  </div>
</template>

<style lang='scss'>
.ths_swiper {
  position: relative;
  display: inline-block;
  text-align: center;
  font-size: 14px;
  transform: translateX(0)
}
</style>

2、滑动时改变的元素属性由left变为transform，便于使用transition来添加动态效果

3、滑动阙值由写死的值变为页面宽度的1/3

mounted () {
  this.pageWidth = this.$refs.swiper.clientWidth
  this.elementWidth = this.$refs.swiper.parentNode.offsetWidth
  this.swiperEles = document.querySelectorAll('.ths_swiper')
},

methods: {
  touchstart (e) {
    this.originalPos = e.touches[0].pageX
    const transform = this.swiperEles[0].style.transform
    this.originalLeft = Number(transform ? transform.split('(')[1].split('px')[0] : 0)
  },
  touchmove (e) {
    let moveDistance = e.touches[0].pageX - this.originalPos // >0 右滑，<0 左滑
    this.doSlide(moveDistance, false)
  },
  touchend (e) {
    let moveDistance = e.changedTouches[0].pageX - this.originalPos // >0 右滑，<0 左滑
    const transform = this.swiperEles[0].style.transform
    let currentLeft = Number(transform ? transform.split('(')[1].split('px')[0] : 0)
    if ((Math.abs(moveDistance) > this.pageWidth / 3 && ((moveDistance > 0 && currentLeft < 0) || (moveDistance < 0 && Math.abs(currentLeft) < this.elementWidth - this.pageWidth)))) {
      // 滑动距离大于阙值，且内容在边界内时,滑动一整页
      let distance = moveDistance > 0 ? this.pageWidth : -this.pageWidth
      this.doSlide(distance, true)
    } else {
      // 滑动回原处
      this.doSlide(0, true)
    }
  },
  /**
   * 滑动方法
   * @param {Number} distance 滑动距离
   * @param {Boolean} delay 滑动是否有动画效果
   */
  doSlide (distance, delay = false) {
    this.swiperEles.forEach((element, index) => {
      element.style.transform = `translateX(${this.originalLeft + distance}px)`
      element.style.transition = delay ? 'transform .3s' : 'initial'
    })
  }
}

效果：

Vue滑动翻页组件swiper的实现---第二版

第一版遗留的问题依然待解决......

Vue滑动翻页组件swiper的实现---第二版

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