VUE中自定义一个获取输入车牌号码组件

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<template>
  <div>
    <div>
      <div
        v-for="(item,index) in chinaShortName"
        :class="chinaShortName[index].isClick?'item-box1':'item-box'" @click="clickShortName(index)">
        <a> {{ item.value }}</a>
      </div>
    </div>
    <div>
      <div :class="letters[index].isClick?'item-box2':'item-box'" :style="bgcolor"
           v-for="(item,index) in letters" @click="clickLetters(index)"><a>{{ item.value }}</a>
      </div>
    </div>
    <div>
      <div :class="number[index].isClick?'item-box2':'item-box'" :style="bgcolor"
           v-for="(item,index) in number" @click="clickNumber(index)"><a>{{ item.value }}</a>
      </div>
    </div>
    <div style="float: right">
    </div>
    <div class="car-number" style="display: inline-block">
      车牌号:
      <div style="display: inline" v-for="(item,index) in firstName">{{ item.value }}·</div>
      <div style="display: inline;letter-spacing:2px;" v-for="(item,index) in otherName">{{ item.value }}</div>
    </div>
    <div class="backspace" @click="backSpace">
      <a>退格</a>
    </div>
    <div class="backspace" @click="comfirmCarNum">
      <a>确认</a>
    </div>
  </div>
</template>

<script>
export default {
  name: "carnumber",
  data() {
    return {
      bgcolor: {
        backgroundColor: "gray"
      },
      isAllowClickNumber: false,
      isActive: false,
      firstName: [],
      //
      otherName: [],
      //车牌地区简称
      chinaShortName: [
        {
          value: '京',
          label: '京',
          isClick: false
        },
        {
          value: '津',
          label: '津',
          isClick: false
        },
        {
          value: '沪',
          label: '沪',
          isClick: false
        },
        {
          value: '渝',
          label: '渝',
          isClick: false
        },
        {
          value: '冀',
          label: '冀',
          isClick: false
        },
        {
          value: '晋',
          label: '晋',
          isClick: false
        },
        {
          value: '蒙',
          label: '蒙',
          isClick: false
        },
        {
          value: '辽',
          label: '辽',
          isClick: false
        },
        {
          value: '吉',
          label: '吉',
          isClick: false
        },
        {
          value: '黑',
          label: '黑',
          isClick: false
        },
        {
          value: '苏',
          label: '苏',
          isClick: false
        },
        {
          value: '浙',
          label: '浙',
          isClick: false
        },
        {
          value: '皖',
          label: '皖',
          isClick: false
        },
        {
          value: '闽',
          label: '闽',
          isClick: false
        },
        {
          value: '赣',
          label: '赣',
          isClick: false
        },
        {
          value: '鲁',
          label: '鲁',
          isClick: false
        },
        {
          value: '豫',
          label: '豫',
          isClick: false
        },
        {
          value: '鄂',
          label: '鄂',
          isClick: false
        },
        {
          value: '湘',
          label: '湘',
          isClick: false
        },
        {
          value: '粤',
          label: '粤',
          isClick: false
        },
        {
          value: '桂',
          label: '桂',
          isClick: false
        },
        {
          value: '新',
          label: '新',
          isClick: false
        },
        {
          value: '黔',
          label: '黔',
          isClick: false
        },
        {
          value: '云',
          label: '云',
          isClick: false
        }
      ],
      //车牌号码
      letters: [
        {
          label: 'A',
          value: 'A',
          isClick: false
        },
        {
          label: 'B',
          value: 'B',
          isClick: false
        },
        {
          label: 'C',
          value: 'C',
          isClick: false
        },
        {
          label: 'D',
          value: 'D',
          isClick: false
        },
        {
          label: 'E',
          value: 'E',
          isClick: false
        },
        {
          label: 'F',
          value: 'F',
          isClick: false
        },
        {
          label: 'G',
          value: 'G',
          isClick: false
        },
        {
          label: 'H',
          value: 'H',
          isClick: false
        },
        {
          label: 'J',
          value: 'J',
          isClick: false
        },
        {
          label: 'K',
          value: 'K',
          isClick: false
        },
        {
          label: 'L',
          value: 'L',
          isClick: false
        },
        {
          label: 'M',
          value: 'M',
          isClick: false
        },
        {
          label: 'N',
          value: 'N',
          isClick: false
        },
        {
          label: 'P',
          value: 'P',
          isClick: false
        },
        {
          label: 'Q',
          value: 'Q',
          isClick: false
        },
        {
          label: 'R',
          value: 'R',
          isClick: false
        },
        {
          label: 'S',
          value: 'S',
          isClick: false
        },
        {
          label: 'T',
          value: 'T',
          isClick: false
        },
        {
          label: 'U',
          value: 'U',
          isClick: false
        },
        {
          label: 'V',
          value: 'V',
          isClick: false
        },
        {
          label: 'W',
          value: 'W',
          isClick: false
        },
        {
          label: 'X',
          value: 'X',
          isClick: false
        },
        {
          label: 'Y',
          value: 'Y',
          isClick: false
        },
        {
          label: 'Z',
          value: 'Z',
          isClick: false
        }
      ],
      number: [
        {
          label: '0',
          value: '0',
          isClick: false
        },
        {
          label: '1',
          value: '1',
          isClick: false
        },
        {
          label: '2',
          value: '2',
          isClick: false
        },
        {
          label: '3',
          value: '3',
          isClick: false
        },
        {
          label: '4',
          value: '4',
          isClick: false
        },
        {
          label: '5',
          value: '5',
          isClick: false
        },
        {
          label: '6',
          value: '6',
          isClick: false
        },
        {
          label: '7',
          value: '7',
          isClick: false
        },
        {
          label: '8',
          value: '8',
          isClick: false
        },
        {
          label: '9',
          value: '9',
          isClick: false
        }
      ]
    }
  },
  methods: {
    clickShortName: function (index) {
      for (let i = 0; i < this.chinaShortName.length; i++) {
        if (index === i) {
          this.chinaShortName[i].isClick = true
          if (this.firstName.length == 0) {
            this.firstName.push({
              type: "firstName",
              index: index,
              value: this.chinaShortName[i].value
            })
          } else {
            this.firstName.pop();
            this.firstName.push({
              type: "firstName",
              index: index,
              value: this.chinaShortName[i].value
            })
          }
        } else {
          this.chinaShortName[i].isClick = false
        }
      }
      this.isAllowClickNumber = true,
        this.bgcolor.backgroundColor = '';
    },
    clickLetters: function (index) {
      this.limitSize()
      if (!this.isAllowClickNumber) {
        //提示不可以点击
        this.$message("请点击省份简称")
        return;
      }
      for (let i = 0; i < this.letters.length; i++) {
        if (index === i) {
          this.letters[i].isClick = true
          this.otherName.push({
            type: "letters",
            index: index,
            value: this.letters[i].value
          })
        }
      }
    },
    clickNumber: function (index) {
      this.limitSize()
      if (!this.isAllowClickNumber) {
        //提示不可以点击
        this.$message("请点击省份简称")
        return;
      }
      for (let i = 0; i < this.number.length; i++) {
        if (index === i) {
          this.number[i].isClick = true
          this.otherName.push({
            type: "number",
            index: index,
            value: this.number[i].value
          })
        }
      }
    },
    limitSize() {
      if (this.otherName.length > 5) {
        this.$message.warning("输入的车牌号码过长");
        throw new Error("输入的车牌号码过长");
      }
    },
    backSpace: function () {
      if (this.firstName.length == 0) {
        this.isAllowClickNumber = false;
        this.$message("已经清空数据")
        return;
      }
      let pop = this.otherName.pop();
      if (this.otherName.length == 0) {
        let pop1 = this.firstName.pop();
        this.chinaShortName[pop1.index].isClick = false;
        this.isAllowClickNumber = false;
      }
      if (pop.type == 'number') {
        this.number[pop.index].isClick = false
      } else if (pop.type == 'letters') {
        this.letters[pop.index].isClick = false
      }
    },
    comfirmCarNum: function () {
      //确认车牌号
      let arr = [];
      this.firstName.forEach(item => {
        arr.push(item.value)
      })
      this.otherName.forEach(item => {
        arr.push(item.value)
      })
      this.$emit("carNum", arr);
    }
  }
}

</script>

<style scoped>
.item-box {
  display: inline-block;
  margin: 10px;
  width: 30px;
  height: 30px;
  font-size: 20px;
  line-height: 30px;
  background-color: black;
  color: white;
  text-align: center;
}

.item-box1 {
  display: inline-block;
  margin: 10px;
  width: 30px;
  height: 30px;
  font-size: 20px;
  line-height: 30px;
  background-color: white;
  color: black;
  border: 0.5px solid black;
  text-align: center;
}

.item-box2 {
  display: inline-block;
  margin: 10px;
  width: 30px;
  height: 30px;
  font-size: 20px;
  line-height: 30px;
  background-color: white;
  border: 0.5px solid black;
  color: black;
  text-align: center;
}

.car-number {
  font-size: 20px;
  font-weight: bolder;
  width: 230px;
  height: 40px;
  margin: 0 auto;
  background-color: darkblue;
  color: white;
  line-height: 40px;
  padding-left: 20px;
  border-radius: 5px;
}

.backspace {
  display: inline-block;
  font-size: 20px;
  font-weight: bolder;
  height: 40px;
  line-height: 40px;
  text-align: center;
  margin-left: 10px;
  padding-left: 10px;
  padding-right: 10px;
  border-radius: 5px;
  border: 0.5px solid black;
}
</style>