element plus表单自定义校验规则和验证单个字段

关键代码

// prop 设置校验规则
<el-form ref="registerFormRef" :model="registerForm" status-icon :rules="registerRules" label-width="70px">

	<el-form-item label="手机号" prop="tel">
	
	    <el-input v-model="registerForm.tel" autocomplete="off" placeholder="请输入手机号" />
	    
	    <el-link type="danger" @click="sendCode" :disabled="hasBeenSend">{
    
    {
    
     sendCodeText }}</el-link>
	    
	</el-form-item>
	
</el-form>

<script lang="ts">
import {
    
     defineComponent, reactive, toRefs, unref, ref, onMounted, watch } from "vue";
import {
    
     FormInstance } from "element-plus";

export default defineComponent({
    
    
  setup() {
    
    
	// 注册验证
	const registerFormRef = ref<FormInstance>();

    // 手机号码自定义验证规则
  	const telValidator = (rule, value, callback) => {
    
    
	  if (!value) {
    
    
	    callback(new Error("请输入手机号"));
	  } else if (!/^1[3456789]\d{9}$/.test(value)) {
    
    
	    callback(new Error("手机号格式不正确"));
	  } else {
    
    
	    callback();
	  }
	};
	
	// 注册表单验证规则
	const registerRules = {
    
    
		tel: [
	        {
    
    
	          validator: telValidator,
	          trigger: "blur",
	          required: true,
	        },
        ],
	}

	// 发送验证码按钮
    const sendCode = () => {
    
    
      const formRef: any = unref(registerFormRef);
      formRef.validateField("tel", (valid: boolean) => {
    
    
        if (valid) {
    
    
          // 验证通过
          let timer = setInterval(() => {
    
    
	        if (initData.countDown > 0) {
    
    
	          initData.hasBeenSend = true; // 是否禁用点击事件
	          initData.countDown--; // 倒计时
	          initData.sendCodeText = initData.countDown + "秒后重新获取";
	        } else {
    
    
	          initData.hasBeenSend = false;
	          initData.countDown = 60;
	          initData.sendCodeText = "重新获取";
	          clearInterval(timer);
	        }
	      }, 1000);	      
	      // 发送验证码接口
          sendCodeApi(initData.registerForm.tel);
        }
      });
    };
	
	return {
    
    
	  registerRules,
	  registerFormRef,
	};
  }

</script>

效果展示