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Vue IP地址輸入框?qū)嵗a

更新時(shí)間：2023年10月26日 14:40:21 作者：Krpgly

本文通過實(shí)例代碼給大家介紹Vue IP地址輸入框?qū)崿F(xiàn),代碼簡(jiǎn)單易懂,對(duì)大家的學(xué)習(xí)或工作具有一定的參考借鑒價(jià)值,需要的朋友參考下吧

Vue IP地址輸入框

效果

使用

<template>
  <IpInput ref="ipInput"></IpInput>
</template>

this.$refs.ipInput.getIP("10.90.15.66");
const ip = this.$refs.ipInput.value.getIP();
console.log(ip);

代碼

<template>
  <div v-for="(item, index) in ipAddress" :key="index" style="display: flex; width: 25%">
    <el-input ref="ipInput" v-model="item.value" type="text" @input="checkFormat(item)" @keydown="setPosition(item, index, $event)" />
    <div v-if="index < 3">.</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      ipAddress: [
        {
          value: ""
        },
        {
          value: ""
        },
        {
          value: ""
        },
        {
          value: ""
        }
      ]
    };
  },
  // 開啟實(shí)時(shí)更新并emit IP地址
  // watch: {
  //   ipAddress: {
  //     // 雙向數(shù)據(jù)綁定的value
  //     handler: function () {
  //       this.$emit("changed", this.getIP());
  //     },
  //     deep: true
  //   }
  // },
  methods: {
    // 檢查格式
    checkFormat(item) {
      let val = item.value;
      val = val.toString().replace(/[^0-9]/g, "");
      val = parseInt(val, 10);
      if (isNaN(val)) {
        val = "";
      } else {
        val = val < 0 ? 0 : val;
        val = val > 255 ? 255 : val;
      }
      item.value = val;
    },
    // 判斷光標(biāo)位置
    async setPosition(item, index, event) {
      if (event && event.currentTarget.selectionStart !== event.currentTarget.selectionEnd) {
        return;
      }
      if (event && (event.key === "ArrowRight" || event.key === "ArrowLeft")) {
        event.preventDefault(); // 阻止事件的默認(rèn)行為
      }
      if (event.key === "ArrowLeft") {
        // 向左移動(dòng)
        if (event.currentTarget.selectionStart === 0) {
          this.previousBlock(index);
        } else {
          event.currentTarget.selectionStart -= 1;
          event.currentTarget.selectionEnd = event.currentTarget.selectionStart;
        }
      } else if (event.key === "ArrowRight") {
        // 向右移動(dòng)
        if (event.currentTarget.selectionStart === item.value.toString().length) {
          this.nextBlock(index);
        } else {
          // 正常格內(nèi)移動(dòng)
          event.currentTarget.selectionStart += 1;
          event.currentTarget.selectionEnd = event.currentTarget.selectionStart;
        }
      } else if (event.key === "Backspace") {
        // 刪除鍵
        if (/* item.value.toString() === "" && */ event.currentTarget.selectionStart === 0) {
          this.previousBlock(index);
        }
      } else if (event.key === "Enter" || event.key === "." || event.key === " ") {
        // 回車鍵、點(diǎn)和空格鍵均向右移動(dòng)
        this.nextBlock(index);
      } else if (item.value.toString().length === 3 && event.currentTarget.selectionStart === 3) {
        // 輸入3位后光標(biāo)自動(dòng)移動(dòng)到下一個(gè)文本框
        this.nextBlock(index);
      }
    },
    nextBlock(index) {
      if (index < 3) {
        const element = this.$refs.ipInput[index + 1];
        element.$el.querySelector(".el-input__inner").selectionStart = 0;
        element.$el.querySelector(".el-input__inner").selectionEnd = 0;
        element.focus();
      }
    },
    previousBlock(index) {
      if (index > 0) {
        const element = this.$refs.ipInput[index - 1];
        const position = this.ipAddress[index - 1]?.value?.toString().length;
        element.$el.querySelector(".el-input__inner").selectionStart = position;
        element.$el.querySelector(".el-input__inner").selectionEnd = position;
        element.focus();
      }
    },
    setIP(ip) {
      const values = ip.split(".");
      for (const i in this.ipAddress) {
        this.ipAddress[i].value = values[i] ?? "";
      }
    },
    getIP() {
      let result = "";
      for (const i in this.ipAddress) {
        if (i > 0) result += ".";
        result += this.ipAddress[i].value;
      }
      return result;
    }
  }
};
</script>

補(bǔ)充：Vue3實(shí)現(xiàn)IP地址輸入框

前言

在網(wǎng)上找了一點(diǎn)資料，但是還是覺得不太行，就自己寫了一個(gè)，與網(wǎng)上的也大差不差，都是用4個(gè)輸入框和.號(hào)組合起來的，主要就是監(jiān)聽輸入框事件和鍵盤按下事件還有光標(biāo)位置完成的，廢話不多說，直接復(fù)制就可以用了。

使用方法

1.我已經(jīng)將這個(gè)代碼注冊(cè)為了一個(gè)組件，在自己的組件庫(kù)中創(chuàng)建文件IpModel.vue，將下面的代碼復(fù)制到組件中。

#IpModel.vue
<template>
  <div class="ip-input">
    <input id="ip1" v-model="ip1" ref='input1' @input="handleInput(1)" @keydown="handleKeyDown($event, 1)"
      maxlength="3" />
    <span>.</span>
    <input id="ip2" v-model="ip2" ref='input2' @input="handleInput(2)" @keydown="handleKeyDown($event, 2)"
      maxlength="3" />
    <span>.</span>
    <input id="ip3" v-model="ip3" ref='input3' @input="handleInput(3)" @keydown="handleKeyDown($event, 3)"
      maxlength="3" />
    <span>.</span>
    <input id="ip4" v-model="ip4" ref='input4' @input="handleInput(4)" @keydown="handleKeyDown($event, 4)"
      maxlength="3" />
  </div>
</template>
 
<script>
export default {
  name: "IpModel",
  props: {
    IP: String,
  },
  data() {
    return {
      ip1: "",
      ip2: "",
      ip3: "",
      ip4: "",
    };
  },
  methods: {
    handleInput(index) {
      this[`ip${index}`] = this[`ip${index}`].replace(/[^0-9]/g, '')
      let ip = this[`ip${index}`];
      if (ip.length > 1 && ip[0] === "0") {
        this[`ip${index}`] = ip.slice(1);
      }
      if (ip > 255) {
        this[`ip${index}`] = "255";
      }
      if (ip.length === 3 || ip[0] === "0") {
        let nextIndex = index + 1;
        if (nextIndex <= 4) {
          this.$refs[`input${nextIndex}`].focus();
        }
      }
    },
    handleKeyDown(event, index) {
      let ip = this[`ip${index}`];
      if (event.keyCode == 8 && 0 == document.getElementById(`ip${index}`).selectionStart) {
        let nextIndex = index - 1;
        if (nextIndex >= 1) {
          this.$refs[`input${nextIndex}`].focus();
          document.getElementById(`ip${nextIndex}`).setSelectionRange(this[`ip${nextIndex}`].length, this[`ip${nextIndex}`].length)
        }
      } else if (event.keyCode == 46 && ip.length == document.getElementById(`ip${index}`).selectionStart) {
        let nextIndex = index + 1;
        if (nextIndex <= 4) {
          this.$refs[`input${nextIndex}`].focus();
          document.getElementById(`ip${nextIndex}`).setSelectionRange(0, 0)
        }
      }
      else if ((event.keyCode == 37) && 0 == document.getElementById(`ip${index}`).selectionStart) {
        let nextIndex = index - 1;
        if (nextIndex >= 1) {
          this.$refs[`input${nextIndex}`].focus();
          document.getElementById(`ip${nextIndex}`).setSelectionRange(this[`ip${nextIndex}`].length, this[`ip${nextIndex}`].length)
        }
      } else if ((event.keyCode == 39) && ip.length == document.getElementById(`ip${index}`).selectionStart) {
        let nextIndex = index + 1;
        if (nextIndex <= 4) {
          this.$refs[`input${nextIndex}`].focus();
          document.getElementById(`ip${nextIndex}`).setSelectionRange(0, 0)
        }
      } else if (event.keyCode == 110 || event.keyCode == 190) {
        let nextIndex = index + 1;
        if (nextIndex <= 4) {
          this.$refs[`input${nextIndex}`].focus();
        }
      } else {
        return false
      }
    },
    IpModelSend() {
      if (this.ip1 == '' || this.ip2 == '' || this.ip3 == '' || this.ip4 == '') {
        this.$message({
          duration: 1000,
          message: 'IP地址非法,請(qǐng)輸入正確的IP地址!'
        });
      } else {
        const ip = this.ip1 + '.' + this.ip2 + '.' + this.ip3 + '.' + this.ip4
        this.$emit('changeIP', ip);
      }
    },
    IpModelCancel() {
      this.ip1 = this.IP.split('.')[0]
      this.ip2 = this.IP.split('.')[1]
      this.ip3 = this.IP.split('.')[2]
      this.ip4 = this.IP.split('.')[3]
    }
  },
};
</script>
 
<style scoped>
.ip-input {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 160px;
  height: 40px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0 10px;
  box-sizing: border-box;
  font-size: 16px;
}
 
.ip-input input {
  width: 30px;
  height: 90%;
  border: none;
  outline: none;
  text-align: center;
  font-size: 16px;
}
 
.ip-input span {
  font-size: 16px;
}
</style>

2.在需要使用到IP輸入框的地方調(diào)用組件即可，例如：

<template>
  <div>
    <button class="ethernet" @click="IPVisible = true">IP輸入框</button>
    <el-dialog v-model="IPVisible" title="" width="350px" align-center>
      <IpModel ref="ipModel" :IP="IP" v-on:changeIP="changeIP"></IpModel>
      <template #footer>
        <el-button @click="ipModelSure">確認(rèn)</el-button>
        <el-button @click="ipModelCancel">取消</el-button>
      </template>
    </el-dialog>
  </div>
</template>
 
<script>
import IpModel from '../components/IpModel.vue'
export default {
  components: {
    IpModel
  },
  data() {
    return {
      IPVisible: false,
      IP: "127.0.0.1",
    }
  },
  methods: {
    ipModelSure() {
      this.$refs.ipModel.IpModelSend(); // 調(diào)用IpModel子組件的IpModelSend方法
    },
    ipModelCancel() {
      this.IPVisible = false
      this.$refs.ipModel.IpModelCancel(); // 調(diào)用IpModel子組件的IpModelCancel方法
    },
    changeIP(value) {
      console.log(value)
      this.IPVisible = false
    },
  },
}
</script>
 
<style scoped></style>

3.當(dāng)點(diǎn)擊確定按鈕時(shí)，父組件通過this.$refs.ipModel.IpModelSend();去調(diào)用子組件的方法，子組件通過this.$emit('changeIP', ip);返回ip值，父組件通過監(jiān)聽事件changeIP調(diào)用方法打印出ip

4.當(dāng)點(diǎn)擊取消按鈕時(shí)，父組件通過this.$refs.ipModel.IpModelCancel();去調(diào)用子組件的方法，重新給ip賦值，使數(shù)據(jù)不產(chǎn)生變化

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