效果图如下：

 代码如下：

<template><div><div class="carNoBoxInput"><div style="padding: 6px;border: 2px solid #fff;border-radius: 6px;margin: 6px 3px 6px 6px;"><input class="inputBox" :value="licensePlateUnit[0]" @click="licensePlateDoor = true"/><input class="inputBox" :value="licensePlateUnit[1]" @click="licensePlateDoor = true"/><span class="dot"></span><input class="inputBox" :value="licensePlateUnit[2]" @click="licensePlateDoor = true"/><input class="inputBox" :value="licensePlateUnit[3]" @click="licensePlateDoor = true"/><input class="inputBox" :value="licensePlateUnit[4]" @click="licensePlateDoor = true"/><input class="inputBox" :value="licensePlateUnit[5]" @click="licensePlateDoor = true"/><input class="inputBox" :value="licensePlateUnit[6]" @click="licensePlateDoor = true"/><input v-if="7 === licensePlateUnit.length - 1" class="inputBox" :class="7 === licensePlateUnit.length - 1 ? 'inputBoxActive' : 'inputBox'" :value="licensePlateUnit[7]"/><img v-if="7 !== licensePlateUnit.length - 1" src="../assets/newEnergy.png" style="height: 36px;width: 36px;"  alt="新能源"/></div></div><div v-if="licensePlateDoor"><div v-if="licensePlateUnit.length < 1" class="carNoBox"><span class="carNo" v-for="item in columns" :key="item" @click="pickOn(item)">{{item}}</span><span class="delBt" @click="delCarNo">X</span></div><div v-if="licensePlateUnit.length >= 1" class="carNoBox"><span class="carNo" v-for="item in numberColumns" :key="item" @click="pickOn(item)">{{item}}</span><div style="display: flex;align-items: center"><span class="delBt" @click="delCarNo">X</span><span class="delBt" style="margin-left: 6px;width: 42px" @click="confirm">确认</span></div></div></div></div>
</template><script>export default {data() {return {licensePlateDoor: false,activeIndex: 0,licensePlateUnit: [],columns: [//省缩写选择'京', '沪', '鄂', '湘', '川', '渝', '粤', '闽', '晋', '黑','津', '浙', '豫', '赣', '贵', '青', '琼', '宁', '吉', '蒙','冀', '苏', '皖', '桂', '云', '陕', '甘', '藏', '新', '辽','鲁'],numberColumns: ['1', '2', '3', '4', '5', '6', '7', '8', '9', '0','Q', 'W', 'E','R', 'T', 'Y', 'U', 'I', 'O', 'P', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', 'Z','X', 'C', 'V', 'B', 'N', 'M', '港','澳','学','领','警'],}},methods: {pickOn(value) {this.licensePlateDoor = true;if (this.licensePlateUnit.length <= 7) {this.licensePlateUnit.push(value)}},delCarNo() {this.licensePlateUnit.pop();},confirm() {if(this.licensePlateUnit.length >= 7) {console.log("车牌是："+this.licensePlateUnit.join(''));this.licensePlateDoor = false;}},}
}
</script><style scoped>.carNo {border-radius: 6px;background: #fff;font-weight: bold;font-size: 20px;height: 28px;width:28px;margin: 6px;padding: 12px;cursor: pointer;}.inputBox {color: white;height: 30px;line-height: 30px;width: 30px;font-size: 28px;text-align: center;background-color: transparent;border: none;outline: none;caret-color: rgba(0, 0, 0, 0)}input:focus {border-bottom: 3px solid #fff;transition: all 0.5s;}.dot {margin-bottom: 6px;background-color: #fff;height: 6px;width: 6px;border-radius: 50%;display: inline-block}.delBt {background: #ACB3BB;border-radius: 6px;display: inline-block;font-weight: bold;font-size: 20px;height: 28px;width:28px;margin: 6px;padding: 12px;cursor: pointer;}.carNoBoxInput {display: flex;width: 310px;align-items: center;//height: 80px;border-radius: 8px;margin: 12px 0;background: #2D66D8;}.carNoBox {background: #D0D5D9;position: relative;width: 600px;border-radius: 6px;display: flex;flex-wrap: wrap;justify-items: center;align-items: center}
</style>