使用MediaRecorder API 简单实现录音功能

1. 代码：

<script setup>
import { ref } from 'vue'

const isRecording = ref(false)
const mediaRecorder = ref(null)
const audioChunks = ref([])

const toggleRecording = async () => {
  if (!isRecording.value) {
    try {
      const stream = await navigator.mediaDevices.getUserMedia({ audio: true })
      mediaRecorder.value = new MediaRecorder(stream)

      mediaRecorder.value.ondataavailable = (e) => {
        audioChunks.value.push(e.data)
      }

      mediaRecorder.value.onstop = () => {
        const audioBlob = new Blob(audioChunks.value, { type: 'audio/wav' })
        const audioUrl = URL.createObjectURL(audioBlob)
        // 这里可以处理录音文件，如上传或保存
        console.log('录音文件:', audioUrl)
      }

      mediaRecorder.value.start()
      isRecording.value = true
    } catch (err) {
      ElMessage.error('麦克风权限被拒绝')
    }
  } else {
    mediaRecorder.value.stop()
    isRecording.value = false
    audioChunks.value = []
  }
}
</template>

<template>
  <div class="audio-box mt-20px">
    <button 
      class="record-btn"
      :class="{ 'recording': isRecording }"
      @click="toggleRecording"
    >
      {{ isRecording ? '停止录音' : '开始录音' }}
    </button>
  </div>
</template>

<style scoped>
.audio-box {
  height: 136px;
  background: linear-gradient(145deg, #ffffff 0%, #ffffff 100%);
  box-shadow: 0px 4px 20px 0px rgba(88, 125, 255, 0.1);
  border-radius: 12px;
  box-sizing: border-box;
}
.record-btn {
  width: 120px;
  height: 40px;
  background: #236ae5;
  color: white;
  border-radius: 20px;
  transition: all 0.3s;
}

.record-btn.recording {
  background: #ff4d4f;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}
</style>

2. 参考：

MediaRecorder MDN 文档