基于 uniapp 开发的仿抖音小程序组件（超高性能）预加载
先看效果图：
注：组件应用 vue3+typescript 开发
- 全局仅渲染 3 个 swiper-item
- 实测，不论加载多少数据也能丝滑滚动
- 实用于 vue3，vue2 请自行修
- 主动预加载视频
- 首次渲染优化
插件下载地址
https://ext.dcloud.net.cn/plugin?id=13025
疾速开始
- 装置 nodejs: https://nodejs.org/en/
- 装置依赖:
npm i - 运行我的项目:
npm run dev:mp-weixin - 构建我的项目资源:
npm run build:mp-weixin - 关上小程序开发工具导入
dist/dev/mp-weixin 即可
参考 API
| 属性 | 类型 | 阐明 |
|---|
| videoList | Array | 视频列表，数组对象 {src: string, poster?: string, objectFit: string} |
| loop | Boolean | 是否循环播放视频 |
| controls | Boolean | 显示原生管制栏 |
| autoplay | Boolean | 是否自动播放 |
| autoChange | Boolean | 是否主动滚动播放 |
| loadMoreOffsetCount | Boolean | 滚动加载阈值（即播放到残余多少个之后触发加载更多 |
| @play | EventHandle | 当开始/持续播放时触发 play 事件 |
| @error | EventHandle | 视频播放出错时触发 |
| @ended | EventHandle | 当播放到开端时触发 ended 事件 |
| @loadMore | EventHandle | 当滚动到最初第 N 条数据后，须要加载更多时触发 |
| @change | EventHandle | 切换视频时触发 |
| @click | EventHandle | 点击整个视频区域触发 |
| @controlstoggle | EventHandle | 管制栏状态变动触发 |
Slots 插槽
| 属性 | 默认值 | 阐明 |
|---|
| default | - | 自定义内容，笼罩到视频上方的所有自定义内容 v-slot="data" 为以后渲染数据，请参照应用示例 |
应用示例
<template> <div class="video-container"> <mTikTok ref="mTikTokRef" :video-list="state.videoList" @loadMore="loadMore" @change="change" > <!-- 此处为用户齐全自定义 data 中的数据为以后渲染的数据 --> <template v-slot="data"> <view class="video-layer"> 第{{ data.item.id }}个 </view> </template> </mTikTok> </div></template><script lang="ts" setup>import { onMounted, reactive, ref } from "vue";// 导入组件import mTikTok from "@/components/mTikTok.vue";const mTikTokRef = ref<InstanceType<typeof mTikTok>>();const state = reactive({ videoList: [ { src: "https://xjc.demo.hongcd.com/uploads/20230214/84e165388f5bfdb1550522f50f5a57bb.mp4", id: "1", }, { src: "https://xjc.demo.hongcd.com/uploads/20230214/3f26d950ac286eecedba49f5295f0819.mp4", id: "2", }, { src: "https://xjc.demo.hongcd.com/uploads/20230215/8b5ac0420fe61e2f9660d7b8af998f7b.mp4", id: "3", }, { src: "https://xjc.demo.hongcd.com/uploads/20210128/d932b2d78cebb0a8cb8f9a6216790dfb.mp4", id: "4", }, { src: "https://xjc.demo.hongcd.com/uploads/20210128/0c64cbeea28b10c06eee8728c762449e.mp4", id: "5", }, { src: "https://xjc.demo.hongcd.com/uploads/20210327/1b72e1b6153cd29df07f5449991e8083.mp4", id: "6", }, { src: "https://xjc.demo.hongcd.com/uploads/20230214/7e1a0baaebc4e656bbbfbc44d7a55a60.mp4", id: "7", }, ],});const loadMore = () => { // 触发加载更多 console.log("加载更多");};const change = (e: any) => { console.log(" ~ file: index.vue:53 ~ change ~ data:", e);};// 播放第几个const playIndex = (index: number) => { mTikTokRef.value?.initSwiperData(index);};onMounted(() => { // 间接播放第3个 playIndex(3);});</script><style lang="scss">.video-layer { position: absolute; right: 12px; bottom: 120px; color: #fff;}</style>