你真的会自定义audio面板吗？

前言

近期项目中经常使用到音频功能，然而自带的音频控制面板大部分情况都不能满足需
求，固用vue自定义了一个通用的的audio面板。主要功能有:播放、暂停、自定义进度
条，静音控制等内容，废话不多说，先上图

页面组成

播放暂停模块
自定义进度条模块
音频时长模块
静音控制模块

主要思路

使用ref获取audio元素
调用 audio play pause方法实现暂停播放
为audio添加事件: @canplay @timeupdate @ended
在computed中设置静音和非静音图片资源

html

  <div class="app">
    <div class="dialogDetailAudio" onselectstart="return false">
      <img class="dialogAudioPlay" :src="audioImg" title="播控" @click="playAudio">
      <span class="dialogAudioTime">{{time}}</span>
      <div class="dialogAudioProgress" ref="dialogAudioProgress" @mousedown="controlAudioProgress($event)">
        <span class="progressDot" :style="dotStyle"></span>
        <span class="bar" :style="progressStyle"></span>
      </div>
      <span class="dialogAudioDuration">{{duration}}</span>
      <img class="dialogAudioListen" :src="dialogAudioListen" title="静音" @click="listenDialogAudio">
      <img class="dialogAudioDownload" src="./callRecordDownload.png" title="下载" @click="downloadCallRecord">
      <audio ref="recordAudio" class="recordAudio" type="audio/mpeg" 
        @canplay="canPlay" @timeupdate="timeUpdate" @ended="onEnded" :src="audioUrl">
      </audio>
    </div>
  </div>

css

* {
  margin: 0;
  padding: 0;
}

.dialogDetailAudio {
  margin-top: 100px;
  margin-left: auto;
  margin-right: auto;
  width: 550px;
  height: 49px;
  line-height: 49px;
  background: rgba(255, 255, 255, 1);
  box-shadow: 0px 5px 30px 0px rgba(29, 34, 54, 0.18);
  border-radius: 6px;
}

.dialogAudioPlay {
  display: inline-block;
  position: relative;
  top: 6px;
  margin-left: 15px;
  cursor: pointer;
  width: 23px;
  height: 23px;
}

.dialogAudioTime {
  margin-left: 11px;
  font-size: 11px;
  font-weight: 400;
  color: rgba(51, 51, 51, 1);
}

.dialogAudioProgress {
  display: inline-block;
  width: 300px;
  height: 2px;
  background: rgba(212, 249, 232, 1);
  border-radius: 1px;
  margin-left: 12px;
  position: relative;
}

.progressDot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  -moz-border-radius: 50%;
  -webkit-border-radius: 50%;
  background-color: rgba(5, 180, 147, 1);
  position: absolute;
  left: 0;
  top: 50%;
  margin-top: -5px;
  margin-left: -5px;
  cursor: pointer;
}

.bar {
  height: 100%;
  background: rgba(5, 180, 147, 1);
  border-radius: 3px;
  display: inline-block;
  position: absolute;
}

.dialogAudioDuration {
  margin-left: 11px;
  font-size: 11px;
  font-weight: 400;
  color: rgba(34, 34, 34, 1);
}

.dialogAudioListen,
.dialogAudioDownload {
  width: 16px;
  height: 13px;
  cursor: pointer;
}

.dialogAudioListen {
  margin-left: 8px;
}

.dialogAudioDownload {
  margin-left: 5px;
}

js

var app = new Vue({
  el: ".app",
  data() {
    return {
      time: "00:00",
      duration: "00:00",
      progressStyle: { width: "" },
      dotStyle: { left: "" },
      audioUrl: "http://file.duzhai.net/Files/Audio/2017-08/af01ab05-d112-4ad7-9cff-2cfecced5bc6.mp3",
      audioImg: "./dialogDetailPlay.png",
      dialogAudioListenGroup: ["./callRecordListen.png", "./quite.png"],
      imgIndex: 0,
    }
  },

  //计算属性 切换静音图片
  computed: {
    dialogAudioListen() {
      return this.dialogAudioListenGroup[this.imgIndex]
    }
  },

  methods: {
    //播放暂停控制
    playAudio() {
      let recordAudio = this.$refs.recordAudio; //获取audio元素
      if (recordAudio.paused) {
        this.audioImg = "./dialogDetailPause.png"
        recordAudio.play();
      } else {
        this.audioImg = "./dialogDetailPlay.png"
        recordAudio.pause();
      }
    },

    //进度条更新
    timeUpdate() {
      this.duration = this.transTime(this.$refs.recordAudio.duration);
      let timeStr = parseInt(this.$refs.recordAudio.currentTime);
      this.time = this.transTime(timeStr);
      let scales = this.$refs.recordAudio.currentTime / this.$refs.recordAudio.duration;
      this.progressStyle.width = scales * 100 + '%';
      this.dotStyle.left = scales * 100 + '%';
    },

    //播放结束
    onEnded() {
      this.audioImg = "./dialogDetailPlay.png";
      this.time = "00:00";
      this.progressStyle.width = 0;
      this.dotStyle.left = 0;
    },

    //用户可以开始播放audio
    canPlay() {
      //获取audio音频文件总时长 并设置到界面并解决出现 NAN 的问题
      this.duration = this.transTime(this.$refs.recordAudio.duration);
    },

    //静音控制
    listenDialogAudio() {
      this.imgIndex = (this.imgIndex + 1) % (this.dialogAudioListenGroup).length;
      if (this.dialogAudioListen == "./quite.png") {
        this.$refs.recordAudio.volume = 0;
      } else {
        this.$refs.recordAudio.volume = 1;
      }
    },

    //鼠标点击移动播放进度
    controlAudioProgress(event) {
      let audio = this.$refs.recordAudio;
      let dialogAudioProgress = this.$refs.dialogAudioProgress;
      if (!audio.paused || audio.currentTime != 0) {
        let pgsWidth = parseFloat(window.getComputedStyle(dialogAudioProgress, null).width.replace('px', ''));
        let rate = event.offsetX / pgsWidth;
        audio.currentTime = audio.duration * rate;
        this.timeUpdate();
      }
    },

    //下载音频
    downloadCallRecord() {
      console.log("下载...");
    },

    //时间转换
    transTime(value) {
      let time = "";
      let h = parseInt(value / 3600);
      value %= 3600;
      let m = parseInt(value / 60);
      let s = parseInt(value % 60);
      if (h > 0) {
        time = this.formatTime(h + ":" + m + ":" + s);
      } else {
        time = this.formatTime(m + ":" + s);
      }
      return time;
    },

    //时间格式化
    formatTime(value) {
      let time = "";
      let s = value.split(':');
      let i = 0;
      for (; i < s.length - 1; i++) {
        time += s[i].length == 1 ? ("0" + s[i]) : s[i];
        time += ":";
      }
      time += s[i].length == 1 ? ("0" + s[i]) : s[i];
      return time;
    }
  },
})

注意点

onselectstart 禁止用户选中网页上的内容。
用户点击进度条位置不会选中其他内容
@canplay 设置audio总时长并防止出现 NAN
@ended 视频播放完毕后应回到初始状态
computed 设置静音图片资源。音频的volume默认值是1

写到最后

其实，实现自定义内容很简单，主要就是界面与js逻辑控制的结合，只要弄清楚元素对应
的API并加以改进就可实现很多想要的功能。希望本文可以帮到您，感谢。