element-plus/docs/examples/form/number-validate.vue

<template>
  <el-form
    ref="numberValidateForm"
    :model="numberValidateForm"
    label-width="100px"
    class="demo-ruleForm"
  >
    <el-form-item
      label="age"
      prop="age"
      :rules="[
        { required: true, message: 'age is required' },
        { type: 'number', message: 'age must be a number' },
      ]"
    >
      <el-input
        v-model.number="numberValidateForm.age"
        type="age"
        autocomplete="off"
      ></el-input>
    </el-form-item>
    <el-form-item>
      <el-button type="primary" @click="submitForm('numberValidateForm')"
        >Submit</el-button
      >
      <el-button @click="resetForm('numberValidateForm')">Reset</el-button>
    </el-form-item>
  </el-form>
</template>

<script lang="ts">
export default {
  data() {
    return {
      numberValidateForm: {
        age: '',
      },
    }
  },
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          alert('submit!')
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    resetForm(formName) {
      this.$refs[formName].resetFields()
    },
  },
}
</script>