uniapp仿微信支付密码输入框

以下是使用uniapp实现仿微信支付密码输入框的示例代码：

<template>
  <view class="container">
    <view class="input-box">
      <view
        v-for="(item, index) in inputList"
        :key="index"
        class="input-item"
        :class="{ 'input-item-active': index === currentIndex }"
      >
        <view class="input-dot" v-show="item !== ''"></view>
      </view>
    </view>
    <view class="keyboard">
      <view class="keyboard-row" v-for="row in keyboard" :key="row">
        <view
          class="keyboard-item"
          v-for="key in row"
          :key="key"
          @click="handleKeyClick(key)"
        >
          {{ key }}
        </view>
      </view>
    </view>
  </view>
</template>

<script>
export default {
  data() {
    return {
      inputList: ['', '', '', '', '', ''], // 输入框列表
      currentIndex: 0, // 当前输入框索引
      keyboard: [
        ['1', '2', '3'],
        ['4', '5', '6'],
        ['7', '8', '9'],
        ['', '0', '删除']
      ] // 键盘布局
    };
  },
  methods: {
    handleKeyClick(key) {
      if (key === '删除') {
        if (this.currentIndex > 0) {
          this.currentIndex--;
          this.inputList[this.currentIndex] = '';
        }
      } else {
        if (this.currentIndex < this.inputList.length) {
          this.inputList[this.currentIndex] = key;
          this.currentIndex++;
        }
      }
    }
  }
};
</script>

<style>
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.input-box {
  display: flex;
  justify-content: space-between;
  width: 300rpx;
  height: 50rpx;
  border: 1rpx solid #ccc;
  border-radius: 4rpx;
  overflow: hidden;
}

.input-item {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24rpx;
  color: #333;
}

.input-item-active {
  background-color: #f5f5f5;
}

.input-dot {
  width: 10rpx;
  height: 10rpx;
  border-radius: 50%;
  background-color: #333;
}

.keyboard {
  margin-top: 20rpx;
}

.keyboard-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10rpx;
}

.keyboard-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100rpx;
  height: 100rpx;
  border: 1rpx solid #ccc;
  border-radius: 4rpx;
  font-size: 32rpx;
  color: #333;
}
</style>

这段代码实现了一个简单的支付密码输入框，包括自定义的输入框样式和键盘布局。用户可以点击键盘上的数字输入密码，点击删除按钮可以删除已输入的密码。输入的密码会在输入框中显示为黑色圆点。