React 密码提交验证

Posted 2023-02-24

【中文标题】React 密码提交验证

【英文标题】：React Password submit validation

【发布时间】：2021-01-13 20:31:39

【问题描述】：

我正在为我的应用程序使用 React 打字稿。对于造型，我使用了styled-components。我创建了一个全局输入组件，其中类型为text 和password。我做了几个表单验证。我的电子邮件验证和密码确认验证工作正常。当用户键入时，我已经进行了一次密码长度验证，然后它将显示 password is too small 作为错误，我的逻辑工作正常，但是当我单击少于 8 个字符的提交按钮时，它仍然能够接受表单。如果少于 8 个字符，我不知道如何防止提交表单。

我在Codesandbox分享我的代码。

这是表单组件

import React,  useState  from "react";
import "./styles.css";
import  TextInput  from "./input";

export default function App() 
  const [formState, setFormState] = useState(
    email: ``,
    password: ``,
    passwordConfirmation: ``,
    loading: false,
    accountCreationSuccessful: false,
    errorPasswordMessage: ``,
    errorEmailMessage: ``,
    passwordLength: ``
  );

  //destructure the state
  const 
    email,
    password,
    passwordConfirmation,
    loading,
    accountCreationSuccessful,
    errorPasswordMessage,
    errorEmailMessage,
    passwordLength
   = formState;

  const isPasswordValid = (password: any, passwordConfirmation: any) => 
    if (!password || !passwordConfirmation) return false;
    return password === passwordConfirmation;
  ;

  const isEmailValid = (value: any) => 
    const emailRegex = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]1,3\.[0-9]1,3\.[0-9]1,3\.[0-9]1,3\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]2,))$/;
    return emailRegex.test(value);
  ;

  const sendForm = (payload: any) => 
    return fetch(
      "https://run.mocky.io/v3/03659a5b-fed5-4c5f-b8d0-4b277e902ed3",
      
        method: `POST`,
        headers: 
          Accept: `application/json`,
          "Content-Type": `application/json`
        ,
        body: JSON.stringify(payload)
      
    );
  ;

  const handleChange = (e: any) => 
    let passwordError = "";

    if (e.target.id === "password" && password.length < 7) 
      passwordError = "Password is too short";
    

    setFormState(
      ...formState,
      [e.target.id]: e.target.value,
      passwordLength: passwordError //In here it display the error
    );
  ;

  const onSubmit = async (e: any) => 
    e.preventDefault();

    setFormState(
      ...formState,
      errorPasswordMessage: isPasswordValid(password, passwordConfirmation)
        ? ``
        : `Upps sorry Password did not match ????`,
      errorEmailMessage: isEmailValid(email) ? `` : `Upps sorry wrong email  ????`
    );

    if (
      !isPasswordValid(formState.password, formState.passwordConfirmation) ||
      !isEmailValid(formState.email)
    ) 
      return;
    

    const response = await sendForm(
      email: formState.email,
      password: formState.password
    );

    if (response.ok) 
      setFormState(
        ...formState,
        accountCreationSuccessful: true,
        email: ``,
        password: ``,
        passwordConfirmation: ``
      );
    
  ;

  return (
    <div>
      <TextInput
        type="text"
        value=email
        onChange=handleChange
        id="email"
        label="Email"
        required
        error=errorEmailMessage
      />
      <TextInput
        type="password"
        value=password
        onChange=handleChange
        id="password"
        required
        label="password"
        isPassword
        error=passwordLength //Password lenght error
      />
      <TextInput
        type="password"
        value=passwordConfirmation
        onChange=handleChange
        id="passwordConfirmation"
        required
        label="Confirm password"
        isPassword
        error=errorPasswordMessage
      />
      <button
        type="submit"
        name="action"
        onClick=onSubmit
        disabled=!formState.email
      >
        loading ? `loading...` : `save`
      </button>

      accountCreationSuccessful && !loading ? (
        <p>You have succefully create and account ????????</p>
      ) : null
    </div>
  );

【问题讨论】：

目前不检查密码长度。在isPasswordValid() 函数中，还要检查password 的长度，如果小于8，则返回false ----> if (password.length < 8) return false;

谢谢你的朋友，但我认为这不是正确的答案

你为什么这么认为？据我了解您的代码，您仅在密码字段触发onChange 事件时检查密码的长度，但在提交表单时没有类似的检查。

那我想它会一直显示Upps sorry Password did not match

我假设你想要this is what。

【参考方案1】：

我在沙盒上浏览了您的代码。您可以添加一个额外的签入禁用。

App.tsx

  <button
        type="submit"
        name="action"
        onClick=onSubmit
        disabled=!formState.email || formState.password.length < 8
      >