element ui 表单验证写法

  <el-form ref="form" :model="userInfo" label-width="100px" :rules="rules">
    <el-row>
      <el-col :span="12">
        <el-form-item label="登陆账号:" prop="loginId">
          <el-input v-model="userInfo.loginId" placeholder="请输入"></el-input>
        </el-form-item>
      </el-col>
    </el-row>
    <el-row>
      <el-col :span="12">
        <el-form-item label="姓名:" prop="username">
          <el-input v-model="userInfo.username" placeholder="请输入"></el-input>
        </el-form-item>
      </el-col>
    </el-row>
    <el-row>
      <el-col :span="12">
        <el-form-item label="状态:" prop="enabled">
          <el-select v-model="userInfo.enabled" style="width: 100%;">
            <el-option
              v-for="item in stateList"
              :key="item.value"
              :label="item.label"
              :value="item.value"
            ></el-option>
          </el-select>
        </el-form-item>
      </el-col>
    </el-row>
    <el-row>
      <el-col :span="12">
        <el-form-item label="手机号:" prop="mobile">
          <el-input v-model="userInfo.mobile" placeholder="请输入"></el-input>
        </el-form-item>
      </el-col>
    </el-row>
    <el-row>
      <el-col :span="12">
        <el-form-item label="邮箱:" prop="email">
          <el-input v-model="userInfo.email" placeholder="请输入"></el-input>
        </el-form-item>
      </el-col>
    </el-row>
    <el-row>
      <el-col :span="12">
        <div class="btn-group">
          <el-button type="primary" @click="validateForm('form')">保存</el-button>
        </div>
      </el-col>
    </el-row>
  </el-form>
  
  

let validatePhone = (rule, value, callback) => {
  if (value&&value.trim()&&!/^1[34578]\d{9}$/.test(value)) {
    callback(new Error("请输入正确的手机号"));
  } else {
    callback();
  }
};

let validateEmail = (rule, value, callback) => {
  if (value&&value.trim()&&!/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test(value)) {
    callback(new Error("请输入正确的邮箱号"));
  } else {
    callback();
  }
};

export default {
  data() {
    return {
      userInfo: {
        loginId:'',
        username:'',
        mobile:'',
        email:'',
      },
      rules: {
        loginId: [{ required: true, message: "请输入登录账号" }],
        username: [{ required: true, message: "请输入用户名" }],
        mobile: [{ validator: validatePhone }],
        email:[{ validator: validateEmail }],
        enabled:[{ required: true, message: "请选择状态" }],
      }
    };
  },
  methods: {
    validateForm(formName) {
      this.$refs[formName].validate(async valid => {
        if (valid) {
        //后台提交
          await this.save();
        } else {
          return false;
        }
      });
    },
  }
};