React之网易云音乐（实现唱片滚动以及lrc歌词滚动效果）

缺乏、安全感 2023-06-19 11:18 46阅读 0赞

如下图所示，这里没有gif的图，反正效果就是唱滚动，相应的下方的歌词滚动，使用react实现，歌词是lrc，那么lrc的格式是什么样的，下面会放出图片  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE_size_16_color_FFFFFF_t_70]  
lrc格式![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE_size_16_color_FFFFFF_t_70 1]  
实现如下：

#### 1.获取歌词以及处理 ####

public async getLyric(id: number) {  // 获得歌词 
        let result = await reqLyric({  id }) // ajax获得歌词
        let lyricList = this.state.lyricList
        result['lrc']['lyric'].split(/[\n]/) // 截取中括号
          .forEach(item => { 
            let temp: Array<string> = item.split(/\[(.+?)\]/)
            lyricList.push(
              { 
                time: temp[1], // 时间
                lyc: temp[2] //歌词内容
              })
          })
        lyricList = lyricList.filter(v => v['lyc']) // 去除无歌词内容
        this.setState({ 
          lyric: result['lrc']['lyric'],
          lyricList
        })
      }

<audio
         autoPlay={ true}
          controls={ true}
          onPlayCapture={ (e) => {  this.alreadyPlay(e) }}
          onEnded={ (e) => {  this.endPlay(e) }}
          onTimeUpdate={ (e) => {  this.timeUpdate(e) }}
          src={ url}></audio>

#### 2.audio触发事件 ####

public state: IState = { 
        lyricList: [],// 歌词数组
        currentTime: '',// audio当前播放时间
        currentLyc: 0, // 当前歌词
        lycStyle: { }// 歌词滚动样式
      }
    public timeUpdate(e: any) {  // 播放位置发生时改变触发
      	// 获取audio当前播放时间
        let currentTime = this.format(document.getElementsByTagName('audio')[0]['currentTime']); // 事件转换
        let {  currentLyc, lyricList } = this.state
        for (let i: number = currentLyc; i < lyricList.length; i++) { 
          if (lyricList[i + 1] && currentTime < lyricList[i + 1]['time'] && currentTime > lyricList[i]['time']) { 
            this.setState({ 
              currentLyc: i,
              lycStyle: { 
                transform: `translateY(-${ 0.545 * i}rem)`
              }
            })
          }
        }
      }

public format(value: number) {  // 时间转换
        if (!value) return ''
        let interval = Math.floor(value)
        let minute = (Math.floor(interval / 60)).toString().padStart(2, '0')
        let second = (interval % 60).toString().padStart(2, '0')
        return `${ minute}:${ second}`
      }

然后将样式绑定滚动  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE_size_16_color_FFFFFF_t_70 2]  
剩下的就是样式的问题了，  
具体样式请看我的[**github**][github]，这里就不详细叙述，如何能够帮助到你，记得帮我点个**star**哦，万分感谢！

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191206113757154.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/2019120611430545.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/201912061149509.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW5xaTMxMzE=,size_16,color_FFFFFF,t_70
[github]: https://github.com/yuanqi3131/react-music