Front-end-element input box-input some restrictions (only positive integers and 0 can be entered, or only numbers can be entered but not Chinese characters)

1. The input box can only enter positive integers and 0

      <el-form-item label="设备数量" >
                <el-input
                  v-model="value"
                  onkeyup="value=(value.replace(/\D/g,'')==''?'':parseInt(value))"
                  placeholder="请输入设备数量"
                />
              </el-form-item>

Then you use οnkeyup="value=(value.replace(/\D/g,'')==''?'':parseInt(value))"

2. If it is a positive number and a negative number 0, it can include decimals

        <el-input
                  v-model="value"
                  onkeyup="value=value.replace(/[^\-?\d.]/g,'')"
                  placeholder="请输入"
                />

Then use this οnkeyup="value=value.replace(/[^\-?\d.]/g,'')", you cannot enter Chinese characters and letters

3. You cannot enter Chinese, but you can enter positive numbers, negative numbers, decimals and letters

      <el-input
                        v-model="value"
                        placeholder="请输入"
                        onkeyup="value=value.replace(/[\u4E00-\u9FA5]/g,'')"
                      />

 οnkeyup="value=value.replace(/[\u4E00-\u9FA5]/g,'')"

4. Restrictions on latitude and longitude

web section

  <el-col :span="12">
                    <el-form-item label="经度" prop="longitude">
                      <el-input
                        v-model="form.longitude"
                        placeholder="请输入经度"
                      />
                    </el-form-item>
                  </el-col>
                  <el-col :span="12">
                    <el-form-item label="纬度" prop="latitude">
                      <el-input
                        v-model="form.latitude"
                        placeholder="请输入纬度"
                      />
                    </el-form-item>
                  </el-col>

rule part

longitude: [{ validator: checkLong, trigger: "change" }],
        latitude: [{ validator: checkLat, trigger: "change" }],

verification part

 data() {
    //经度
    var checkLong = (rule, value, callback) => {
      // const longrg = /^(\-|\+)?(((\d|[1-9]\d|1[0-7]\d|0{1,3})\.\d{0,6})|(\d|[1-9]\d|1[0-7]\d|0{1,3})|180\.0{0,6}|180)$/;
      const longrg =
        /^[-+]?(((0|1?[0-7]?[0-9]?)|([1-9]?[0-9]?))(([.][0-9]{1,15})?)|180(([.][0]{1,15})?))$/;
      if (value && !longrg.test(value)) {
        callback(new Error("经度整数部分为0-180,小数部分为0到15位!"));
      }
      callback();
    };
    //纬度
    var checkLat = (rule, value, callback) => {
      // const latreg = /^(\-|\+)?([0-8]?\d{1}\.\d{0,6}|90\.0{0,6}|[0-8]?\d{1}|90)$/;
      const latreg = /^[-+]?([1-8]?\d(\.\d{1,15})?|90(\.0{1,15})?)$/;
      if (value && !latreg.test(value)) {
        callback(new Error("纬度整数部分为0-90,小数部分为0到15位!"));
      }
      callback();
    };
    return {}

5. For numbers greater than 0, Chinese characters and letters are not allowed

/^(?!(0[0-9]{0,}$))[0-9]{1,}[.]{0,}[0-9]{0,}$/

 rules:{   adjustingValveOpening: [
          {
            validator: (rule, value, callback) => {
              if (/^(?!(0[0-9]{0,}$))[0-9]{1,}[.]{0,}[0-9]{0,}$/.test(value)) {
                callback();
              }else if (value == null || value == "") {
                callback();
              }  else {
                callback(new Error("请输入正数"));
              }
            },
            trigger: "blur",
          },
        ],
}  

This is not required for me, it can be empty to add a judgment in the middle;