出现问题的代码

  <!-- 密码重置弹框 --><el-dialog v-model="innerVisible" width="500" title="密码重置" append-to-body><el-form ref="ruleFormRef" style="max-width: 600px" :model="passForm" status-icon :rules="rules"label-width="auto" class="demo-ruleForm"><el-form-item label="密码" prop="password"><el-input v-model="passForm.password" type="password" autocomplete="off" /></el-form-item><el-form-item label="确认密码" prop="checkPass"><el-input v-model="passForm.checkPass" type="password" autocomplete="off" /></el-form-item></el-form><template #footer><div class="dialog-footer"><el-button @click="innerVisible = false">取消</el-button><el-button type="primary" @click="resetPass">提交</el-button></div></template></el-dialog>

// 密码重置
const resetPass = (formEl: FormInstance | undefined) => {if (!formEl) returnformEl.validate((valid) => {if (valid) {passForm.id = user.value.idsaveOrUpdate(passForm).then((res: any) => {if (res.code === 200) {innerVisible.value = false;ElMessage.success('提交成功!');// 刷新一下用户信息getUserData()}}).catch((error) => {ElMessage.error(error.message)});} else {console.log('error submit!')}})
}

发现点击提交时，进行校验逻辑时报错，原因是提交表单的按钮那里没有给方法传ruleFormRef:

正确写法 

     <el-button type="primary" @click="resetPass(ruleFormRef)">提交</el-button>