怎么在微信小程序中实现一个视频弹幕效果

本篇文章为大家展示了怎么在微信小程序中实现一个视频弹幕效果，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

wxml代码

<!--pages/study/video/videoplay/videoplay.wxml--><view class="page-body">  <view class="page-section tc">    <video       id="myVideo"       src="Http://wxsnsdy.tc.qq.com/105/20210/snsdyvideodownload?filekey=30280201010421301f0201690402534804102ca905ce620b1241b726bc41dcff44e00204012882540400&bizid=1023&hy=SH&fileparam=302c020101042530230204136ffd93020457e3c4ff02024ef202031e8d7f02030f42400204045a320a0201000400"       binderror="videoErrorCallback"       danmu-list="{{danmuList}}"       enable-danmu       danmu-btn       show-center-play-btn='{{false}}'       show-play-btn="{{true}}"       controls      picture-in-picture-mode="{{['push', 'pop']}}"      bindenterpictureinpicture='bindVideoEnterPictureInPicture'      bindleavepictureinpicture='bindVideoLeavePictureInPicture'    ></video>    <view  class="weui-label">弹幕内容</view>    <input bindblur="bindInputBlur" class="weui-input" type="text" placeholder="在此处输入弹幕内容" />    <button   bindtap="bindSendDanmu" class="page-body-button" type="primary" fORMType="submit">发送弹幕</button>    <navigator   url="picture-in-picture" hover-class="other-navigator-hover">      <button type="primary" class="page-body-button" bindtap="bindPlayVideo">小窗模式</button>    </navigator>  </view></view>

js代码

// pages/study/video/videoplay/videoplay.jsvar that;function getRandomColor() {  const rgb = []  for (let i = 0; i < 3; ++i) {    let color = Math.floor(Math.random() * 256).toString(16)    color = color.length === 1 ? '0' + color : color    rgb.push(color)  }  return '#' + rgb.join('')} Page({  onShareAppMessage() {    return {      title: 'video',      path: 'page/component/pages/video/video'    }  },   onReady() {    that = this;    this.videoContext = wx.createVideoContext('myVideo')  },   onHide() {   },   inputValue: '',  data: {    src: '',    danmuList:    [{      text: '第 1s 出现的弹幕',      color: '#ff0000',      time: 1    }, {      text: '第 3s 出现的弹幕',      color: '#ff00ff',      time: 3    }],  },   bindInputBlur(e) {    this.inputValue = e.detail.value  },   bindButtonTap() {    const that = this    wx.chooseVideo({      sourceType: ['album', 'camera'],      maxDuration: 60,      camera: ['front', 'back'],      success(res) {        that.setData({          src: res.tempFilePath        })      }    })  },   bindVideoEnterPictureInPicture() {    console.log('进入小窗模式')  },   bindVideoLeavePictureInPicture() {    console.log('退出小窗模式')  },   bindPlayVideo() {    this.videoContext.play()  },  bindSendDanmu() {    // 利用循环和随机数调整位置    var ranNum = Math.floor(Math.random()*10);    var danmuList = [];    for (let index = 0; index < 10; index++) {      danmuList.push('');    }    danmuList[ranNum] = this.inputValue;    for (let index = 0; index < danmuList.length; index++) {      this.videoContext.sendDanmu({        text: danmuList[index],        color: '#ff0000'      });    }  },   videoErrorCallback(e) {    console.log('视频错误信息:')    console.log(e.detail.errMsg)  }})

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