JS实现微信播音效果示例详解

const voiceBox = document.queryselector(ns.w('voice', 'box')) // 有在改DOM什么显示音频的变动
const index = [9, 8, 7, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 6, 7, 8, 9]
const num = index.length
const startVoice = () => {
  timer = setInterval(() => {
    num++
    const _curBg = require(`@/assets/images/record_ripple-${index[num]}`.png)
    voiceBox.style.background = `url('${_curBg}') no-repeat 111.2px 32px/28.8px 88px`
    voiceBox.style.backgroundColor = ' rgba(0,0,0,.7)'
    // 从头来过
  if (num >= index.length - 1) {
    num = 0	
  }
}, 70)	

<div class="voice-wrap">
  <div class="voice-box">
    <div class="voice-item one">
    </div>
    <div class="voice-item two">
    </div>
    <div class="voice-item tree">
    </div>
  </div>
</div>

:root {
  --vv-b-r: 10px;
  --vv-a-s: 0.1s;
}
.voice-wrap {
  background-color: rgba(111, 111, 111, 0.5);
  border-radius: var(--vv-b-r);
  width: 80px;
  height: 80px;
  overflow: hidden;
}
.voice-box {
  display: flex;
  align-items: center;
  width: fit-content;
  animation: sprite 0.6s steps(3, end) infinite;
}
.voice-item {
  height: 10px;
  border-radius: var(--vv-b-r);
  width: 80px;
  height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}
@keyframes sprite {
  0% {
    transfORM: translateX(0);
  }
  100% {
    transform: translateX(-240px);
  }
}

<div class="voice-item one">
  <div class="line-item"></div>
  <div class="line-item"></div>
  <div class="line-item">
    <div class="line-item line-one"></div>
  </div>
</div>
<div class="voice-item two">
  <div class="line-item"></div>
  <div class="line-item">
    <div class="line-item line-one"></div>
  </div>
  <div class="line-item">
    <div class="line-item line-one"></div>
  </div>
</div>
<div class="voice-item tree">
  <div class="line-item">
    <div class="line-item line-one"></div>
  </div>
  <div class="line-item">
    <div class="line-item line-one"></div>
  </div>
  <div class="line-item">
    <div class="line-item line-one"></div>
  </div>
</div>

.line-item {
  height: 10px;
  width: 60px;
  background-color: rgba(111, 111, 111, 0.6);
  border-radius: var(--vv-b-r);
}
.line-one {
  background-color: black;
}