小程序input placeholder

并且输入框不可输入

都是模拟器显示正常手机不显示

<view class="input">
  <input value='{{filterBox.aaa}}' placeholder="显示显示"/>
</view>

data: {
        filterBox: {
            aaa: '',
        }
}

.input{
            box-sizing: border-box;
            width: 190rpx;
            height: 50rpx;
            padding: 1px 10rpx;
            line-height: 50rpx;
            background-color: #f8f8f8;
            border-radius: 25rpx;
            text-align: center;
            vertical-align: middle;
        }