h5验证码输入组件

<div class="smsCode">
  <div
      v-for="(item,index) in codeList"
      :key="index"
      class="codeItem">
    {{ smsCode[index] || '' }}
    <div :style="{background: smsCode[index] ? '#999' : ''}" class="border"/>
    <div class="line" v-if="smsCode.length === index"/>
  </div>
  <input ref="inputRef" v-model="smsCode" class="codeInput" type="number" maxlength="6" @input="inputChange"
         pattern="[0-9]*"/>
</div>

return {
  smsCode: '',
  codeList: [],
};

this.codeList = new Array(6).fill("");

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none !important;
  margin: 0;
}

input {
  caret-color: transparent; // 修改input自带的光标颜色
}

.smsCode {
  display: flex;
  height: 67px;
  flex-direction: row;
  justify-content: space-around;
  position: relative;
}

.codeInput {
  height: 67px;
  position: absolute;
  border: none;
  outline: none;
  color: transparent;
  background-color: transparent;
  text-shadow: 0 0 0 transparent;
}

// 光标
.line {
  opacity: 0;
  animation-name: flicker;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  animation-duration: .5s;
  animation-direction: alternate;
  position: absolute;
  top: 26px;
  left: 14px;
  width: 2px;
  height: 25px;
  border-radius: 2px;
  background: #999;
}

@keyframes flicker {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.codeItem {
  position: relative;
  width: 30px;
  padding-top: 17px;
  font-size: 36px;
  line-height: 42px;
  padding-bottom: 5px;
  color: #333333;
}

.border {
  position: absolute;
  content: "";
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: #E9E9E9;
  border-radius: 2px;
}