elementUI表单验证

elementUI表单验证非常方便，我们直奔主题：

<template>
  <el-form ref="orderForm" :model="orderForm" :rules="addRules" label-width="100px">
    <el-form-item label="联系人：" prop="contact">
      <el-input v-model="orderForm.contact" type="text" placeholder="请输入联系人名称"></el-input>
    </el-form-item>
    <el-form-item label="联系电话：" prop="phone">
      <el-input v-model="orderForm.phone" type="text" placeholder="请输入联系电话"></el-input>
    </el-form-item>
  </el-form>
</template>
<script>
  export default {
    data() {
      let validateContact = (rules, value, callback) => {
        if (value === '') {
          callback(new Error('请输入联系人姓名'));
        } else {
          // 中文或英文、数字正则
          let regExpr = /^[a-zA-Z0-9 \u4e00-\u9fa5]+$/;
          if(!regExpr.test(value)){
            callback(new Error('联系人输入不正确'));
          } else if(value && value.trim().length>30) {
            callback(new Error('长度超出限制'));
          } else {
            this.correct = true; // 标记contact是否校验通过
            callback();
          }
        }
      };
      let validPhone = (rules, value, callback) => {
        if (value === '') {
          callback(new Error('请输入手机号'));
        } else {
          if(value){
            value = value.trim();
          }
          let TEL_REGEXP = /^1([38][0-9]|4[579]|5[0-3,5-9]|6[6]|7[0135678]|9[89])\d{8}$/;
          if(TEL_REGEXP.test(value)) {
            callback(new Error('手机号格式不正确'));
          } else {
            this.phoneCorrect = true; // 标记手机号码校验正确
            callback();
          }
        }
      };
      return {
        orderForm: {
          contact: "",
          phone: "",
        },
        addRules: {
          contact: [{ required: true, validator: validateContact, trigger: 'blur'}],
          phone: [{required: true, validator: validPhone, trigger: 'blur'}],
        },
        correct: false, // 校验是否正确
        phoneCorrect: false, // 校验手机号码是否正确
      }
    }
  }
</script>

1、验证表单中的某个字段：

// 验证contact字段
this.$refs.orderForm.validateField("contact", () => {
    console.log(this.correct);
});
// 验证phone字段
this.$refs.orderForm.validateField("phone", () => {
    console.log(this.phoneCorrect);
}); 

2、验证整个表单：（在提交订单前验证）

this.$refs.orderForm.validate(function (valid){
    if(valid){
        // TO DO
    }
});

3、表单重置：

this.$refs.orderForm.resetFields();