el-form-item校验座机电话

以下是使用element-ui的el-form-item校验座机电话的代码：

<template>
  <el-form :model="form" :rules="rules" ref="form" label-width="100px">
    <el-form-item label="联系电话" prop="telephone">
      <el-input v-model="form.telephone"></el-input>
    </el-form-item>
    <el-form-item>
      <el-button type="primary" @click="submitForm('form')">提交</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
export default {
  data() {
    return {
      form: {
        telephone: ''
      },
      rules: {
        telephone: [
          { required: true, message: '请输入联系电话', trigger: 'blur' },
          {
            validator: (rule, value, callback) => {
              const reg = /^0\d{2,3}-\d{7,8}$/;
              if (!reg.test(value)) {
                callback(new Error('请输入正确的座机电话'));
              } else {
                callback();
              }
            },
            trigger: 'blur'
          }
        ]
      }
    };
  },
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate(valid => {
        if (valid) {
          alert('校验成功');
        } else {
          alert('校验失败');
          return false;
        }
      });
    }
  }
};
</script>