<el-form ref="cqhyForm" :model="propertyData" label-width="130px" :rules="cqhyFormRules">
<!--这里为表单内容-->
</el-form>
 
<script>
export default {
  data() {
    return {
     rules1: {
        qlrmc: [{ required: true, message: '请输入', trigger: 'change' }],
        qlrzjh: [{ required: true, message: '请输入', trigger: 'change' }],
        bdcqzh: [{ required: true, message: '请输入', trigger: 'blur' }]
      },
      rules2: {
        zl: [{ required: true, message: '请输入', trigger: 'change' }]
      },
    }
  },
computed: {
   cqhyFormRules: function() {
      if (
        this.firstFlow.thirdTypeData.netFlowdefCode === 'N100201' ||
        this.firstFlow.thirdTypeData.netFlowdefCode === 'H999001'
      ) {
        return this.rules2;
      } else {
        return this.rules1;
      }
    }
  },

这样就实现了对一个表单进行两套或以上的验证。

另外一种场景是，给某一个字段添加多条验证规则。由于rules接收的是一个数组，我们在数组中再添加一项即可。

比如下面的例子，我又在后面添加了一条自定义的规则

data() {
  const validatePhone = async (rule, value, callback) => {
      const re = /^((0\d{2,3}-\d{7,8})|((13[0-9])|(14[5,7,9])|(15[^4])|(18[0-9])|(17[0,1,3,5,6,7,8]))\d{8})$/g;
      if (!value) {
        return callback(new Error('请输入电话号码'));
      }
      if (!re.test(value)) {
        return callback(new Error('请输入合法的电话号码'));
      }
      callback();
    };
        const passwordValidator = (rule, value, callback) => {
      if (!value) {
        callback(new Error('请输入密码'));
      } else {
        callback();
      }
    };
    return {
        rules: {
            reservations: [{ required: true, message: '请选择事项', trigger: 'change' }],
            applicantPhone: [{ required: true, validator: validatePhone, trigger: 'change' }],
            oriPassword: [{ validator: passwordValidator, trigger: 'blur' }],
        }
    }
}

自定义规则中，validator接受的是我自定义的一套规则validatePhone和passwordValidator，Error为接受的错误提示。