基于vue封装下拉刷新上拉加载组件
基于vue和原生javascript封装的下拉刷新上拉加载组件,供大家参考,具体内容如下
- upTilte插槽是下拉刷新的自定义内容放的地方
- downTilte插槽是上拉加载的自定义内容放的地方
- 默认插槽为列表内容区域
组件代码如下
<template> <div class="refresh" id="refresh"> <slot name="upTilte"></slot> <slot></slot> <slot name="downTilte"></slot> </div> </template> <script> export default { name: 'PullupOrPulldownRefresh', props: { // 最大移动距离 maxMove: { type: Number, default: 300 }, // 阻尼系数 friction: { type: Number, default: 0.3 } }, data() { return { startY: 0, ul: null, draw: null, up: null, down: null, y: 0 // 惯性回弹的距离 } }, mounted() { this.$nextTick(() => { this.draw = document.getElementById('refresh') this.ul = this.draw.children[1] this.up = this.draw.children[0] this.down = this.draw.children[2] this.draw.addEventListener('touchstart', this.touchstart) this.draw.addEventListener('touchmove', this.touchmoveEvent) this.draw.addEventListener('touchend', this.touchendEvent) }) }, methods: { // 触摸开始事件 touchstart(event) { this.startY = event.changedTouches[0].clientY }, // 触摸移动事件 touchmoveEvent(event) { const height = this.ul.clientHeight - this.draw.clientHeight if (height === this.draw.scrollTop || this.draw.scrollTop === 0) { var a = event.changedTouches[0].clientY - this.startY this.y = a <= this.maxMove ? a : this.maxMove // 为了清除卡顿问题,需要清除过渡效果 this.ul.style.transition = 'none' this.ul.style.transform = 'translateY(' + this.friction * this.y + 'px)' // 修改状态 const upHeight = -this.up.clientHeight + this.friction * this.y // 下拉开始 if (this.friction * this.y > 0) (this.setStatus(this.friction * this.y), this.up.style.transition = 'none', this.up.style.transform = 'translateY(' + upHeight + 'px) translateX(-50%)') // 上拉开始 if (this.friction * this.y < 0) (this.setStatus(this.friction * this.y), this.down.style.transition = 'none', this.down.style.marginTop = this.friction * this.y + 'px') } }, // 触摸结束事件 touchendEvent(event) { if (this.friction * this.y >= 50) this.$emit('RefreshUp', this.friction * this.y) else if (this.friction * this.y < -50) this.$emit('RefreshDown', this.friction * this.y) else this.resetStyle() }, // 重置并且添加过渡效果 resetStyle() { this.ul.style.transition = 'transform .6s' this.ul.style.transform = 'translateY(' + 0 + 'px)' this.up.style.transition = 'all .6s' this.up.style.transform = 'translateY(-' + this.up.clientHeight + 'px) translateX(-50%)' this.down.style.transition = 'all .6s' this.down.style.marginTop = -this.down.clientHeight + 'px' }, // 设置刷新状态 setStatus(y) { this.$emit('setStatus', y) } } } </script> <style lang="scss"> .refresh { width: 100%; height: 100vh; border: 2px solid #ccc; position: relative; overflow: hidden; overflow: auto; position: fixed; ul { zoom: 1; padding: 0 10%; } ul::after { content: ''; display: block; visibility: hidden; height: 0; clear: both; } li { list-style: none; width: 100%; height: 50px; line-height: 50px; text-align: center; } .UpRefresh { position: absolute; left: 50%; transform: translateX(-50%); z-index: -9; } .DownRefresh { position: relative; left: 50%; transform: translateX(-50%); margin-top: -10px; z-index: -9; } } </style>
- 组件的使用方法
- friction为摩擦系数
- @RefreshUp为下拉到一定距离触发事件
- @RefreshDown为上拉到一定距离触发事件
- @setStatus为更改刷新状态的方法
<template> <div> <PullupOrPulldownRefresh ref="PullupOrPulldownRefresh" :maxMove="maxMove" :friction="friction" @RefreshUp="RefreshUp" @RefreshDown="RefreshDown" @setStatus="setStatus" > <template v-slot:upTilte> <!-- <div class="UpRefresh" v-show="isUpRefresh">{{ Uptitle }}</div> --> <div class="UpRefresh" v-show="isUpRefresh"> <img :src="require('@/assets/logo.png')" alt="" /> <p>{{ Uptitle }}</p> </div> </template> <ul> <li v-for="(item, index) in data" :key="index" style="background: orange" > {{ item }} </li> </ul> <template v-slot:downTilte> <div class="DownRefresh" v-show="isDownRefresh">{{ Downtitle }}</div> </template> </PullupOrPulldownRefresh> </div> </template> <script> export default { data() { return { maxMove: 300, friction: 0.3, data: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], isUpRefresh: false, isDownRefresh: false, Downtitle: '上拉加载更多', Uptitle: '下拉刷新' } }, methods: { setStatus(y) { if (y && y > 0) { this.isUpRefresh = true this.Uptitle = '下拉刷新' if (y >= 50) this.Uptitle = '松手刷新' return } this.isDownRefresh = true this.Downtitle = '上拉加载更多' if (y <= -50) this.Downtitle = '松手加载更多' }, RefreshUp(y) { if (!y) return if (y >= 50) { this.Uptitle = '正在刷新' setTimeout(() => { for (var i = 1; i <= 10; i++) { this.data.push(this.data[this.data.length - 1] + 1) } this.$refs.PullupOrPulldownRefresh.resetStyle() // 回弹重置 }, 1000) } }, RefreshDown(y) { if (!y) return if (y <= -50) { this.Downtitle = '正在加载' setTimeout(() => { for (var i = 1; i <= 10; i++) { this.data.push(this.data[this.data.length - 1] + 1) } this.$refs.PullupOrPulldownRefresh.resetStyle() // 回弹重置 }, 1000) } } } } </script> <style scoped lang="scss"> .UpRefresh img{ width: 30px; } </style>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
赞 (0)