24

我对 React 还很陌生，我有一个注册页面，其中有一个密码字段要使用正则表达式进行验证。

我正在使用 Formik 和 Yup 进行验证，但是我遇到了一个错误，当我在“密码”字段中键入时，它说调用长度函数的属性未定义。

是的，有一个名为“matches”的函数，我试图用它来检查正则表达式。那是我得到这个错误的时候。我删除了这个验证，之后其他验证设置为密码字段工作正常。

下面是 SignUp.js 文件的代码：-

import React from "react";
import Button from "react-bootstrap/Button";
import Form from "react-bootstrap/Form";
import "./SignUp.css";
import * as yup from "yup";
import { Formik } from "formik";

const schema = yup.object({
  username: yup.string().required('Please Enter a username'),
  email: yup
    .string()
    .email()
    .required('Please Enter your Email'),
  confirmEmail: yup
    .string()
    .email()
    .required()
    .oneOf([yup.ref("email"), null], "Emails must match"),
  password: yup
    .string()
    .required('Please Enter your password')
    .matches(
      "^(?=.*[A-Za-z])(?=.*d)(?=.*[@$!%*#?&])[A-Za-zd@$!%*#?&]{8,}$",
      "Must Contain 8 Characters, One Uppercase, One Lowercase, One Number and one special case Character"
    ),
  confirmPassword: yup
    .string()
    .required()
    .oneOf([yup.ref("password"), null], "Passwords must match")
});

const SignUp = props => {
  return (
    <Formik
    validationSchema={schema}
    onSubmit={console.log}
    initialValues={{
      username: "",
      email : "",
      confirmEmail : "",
      password: "",
      confirmPassword : ""
    }}
  >
  {({
    handleSubmit,
    handleChange,
    handleBlur,
    values,
    touched,
    isValid,
    errors,
  }) => (
    <div className="SignUpForm">
      <h1 className="SignInHeading">SIGN UP</h1>
      <Form noValidate onSubmit={handleSubmit}>
        <Form.Group controlId="formBasicUserName">
          <Form.Control
            size="lg"
            className="SignUpFormControls"
            type="text"
            name="username"
            value={values.username}
            onChange={handleChange}
            placeholder="Username"
            isInvalid={!!errors.username}
          />
          <Form.Control.Feedback className="FeedBack" type="invalid">
          {errors.username}
        </Form.Control.Feedback>
        </Form.Group>

        <Form.Group controlId="formBasicEmail">
          <Form.Control
            type="email"
            placeholder="Email"
            value={values.email}
            onChange={handleChange}
            name="email"
            className="SignUpFormControls"
            size="lg"
            isInvalid={!!errors.email}
          />
          <Form.Control.Feedback className="FeedBack" type="invalid">
          {errors.email}
        </Form.Control.Feedback>
        </Form.Group>

        <Form.Group controlId="formBasicConfirmEmail">
          <Form.Control
            type="email"
            className="SignUpFormControls"
            size="lg"
            name="confirmEmail"
            value = {values.confirmEmail}
            onChange={handleChange}
            placeholder="Confirm Email"
            isInvalid={!!errors.confirmEmail}
          />
          <Form.Control.Feedback className="FeedBack" type="invalid">
          {errors.confirmEmail}
        </Form.Control.Feedback>
        </Form.Group>

        <Form.Group controlId="formBasicPassword">
          <Form.Control
            className="SignUpFormControls"
            size="lg"
            type="password"
            name="password"
            value={values.password}
            onChange={handleChange}
            placeholder="Password"
            isInvalid={!!errors.password}
          />
          <Form.Control.Feedback className="FeedBack" type="invalid">
          {errors.password}
        </Form.Control.Feedback>
        </Form.Group>

        <Form.Group controlId="formBasicConfirmPassword">
          <Form.Control
            className="SignUpFormControls"
            size="lg"
            name="confirmPassword"
            onChange={handleChange}
            type="password"
            value={values.confirmPassword}
            placeholder="Confirm Password"
            isInvalid={!!errors.confirmPassword}
          /><Form.Control.Feedback className="FeedBack" type="invalid">
          {errors.confirmPassword}
        </Form.Control.Feedback>
        </Form.Group>

        <Button variant="primary" className="SignUpButton" type="submit">
          Sign Up
        </Button>
        <Form.Text>
          Already a User?{" "}
          <a href="#signin" onClick={props.toggle}>
            Sign In
          </a>
        </Form.Text>
      </Form>
    </div>)}
    </Formik>
  );
};

export default SignUp;

这是 chrome 控制台中的错误：-

formik.esm.js:721 Uncaught (in promise) TypeError: Cannot read property 'length' of undefined
    at yupToFormErrors (formik.esm.js:721)
    at formik.esm.js:276
4

10 回答 10

54

您需要将实际的 RegExp 对象传递给matches，而不是字符串。只需在密码架构中用正斜杠替换双引号即可：

编辑：更新为使用来自@Bren 的正则表达式

password: yup
    .string()
    .required('Please Enter your password')
    .matches(
      /^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,})/,
      "Must Contain 8 Characters, One Uppercase, One Lowercase, One Number and One Special Case Character"
    ),
于 2019-04-10T03:43:39.080 回答
22

这就是我终于开始工作的地方。

 password: Yup.string()
          .required('Please Enter your password')
          .matches(

            /^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,})/,
            "Must Contain 8 Characters, One Uppercase, One Lowercase, One Number and One Special Case Character"
          ),

我从这篇文章中获取了这个正则表达式字符串：https ://www.thepolyglotdeveloper.com/2015/05/use-regex-to-test-password-strength-in-javascript/

于 2020-02-01T23:43:51.513 回答
6

好的，经过几个小时的修补，我决定改为进行自己的自定义验证。

这是我所做的：-

password: yup
    .string()
    .required("Please Enter your password")
    .test(
      "regex",
      "Password must be min 8 characters, and have 1 Special Character, 1 Uppercase, 1 Number and 1 Lowercase",
      val => {
        let regExp = new RegExp(
          "^(?=.*\\d)(?=.*[!@#$%^&*])(?=.*[a-z])(?=.*[A-Z]).{8,}$"
        );
        console.log(regExp.test(val), regExp, val);
        return regExp.test(val);
      }
    )

目前，这工作正常。但我真的很想知道为什么会弹出错误。如果您能够找到解决方案，请将其作为答案发布，如果它对我有用，我会将其标记为正确答案。谢谢。

于 2019-04-01T13:02:53.320 回答
2

以上都不适合我，我的解决方案在下面

  password: yup
  .string()
  .required("Şifreniz kayıt olmak için gereklidir.")
  .matches(
    /^.*(?=.{8,})((?=.*[!@#$%^&*()\-_=+{};:,<.>]){1})(?=.*\d)((?=.*[a-z]){1})((?=.*[A-Z]){1}).*$/,
    "En Az 8 Karakter, Bir Büyük Harf, Bir Küçük Harf, Bir Rakam ve Bir Özel Karakter İçermelidir"
  )
于 2020-01-17T13:15:18.713 回答
2

昨晚遇到这个试图解决类似的 React+Formik+Yup 密码验证问题。总的来说，这里的解决方案很好。我只评论提供一个稍微不同的正则表达式：

/^(?=.*[A-Z])(?=.*[a-z])(?=.*\d)(?=.*[^A-Za-z0-9]).{8,}$/

这在第四次前瞻中有所不同。在这个版本中，它会寻找任何不是字母或数字的东西。以前的 RE 都将“特殊字符”的定义限制为 8 个左右的特定字符。这将匹配更广泛的范围。

我最初使用(?=.*[^\w])了 ，它否定了“单词”类 ( \w)，但该类包括下划线。所以这样做不会把下划线算作特殊字符。

于 2021-01-03T22:29:39.617 回答
2

当我搜索这个答案时，我在网上找到的大多数答案（甚至在这个线程中标记为正确答案的答案）都是这样的，它不检查大写字符：

password: yup
    .string()
    .required('Please Enter your password')
    .matches(
      /^(?=.*[A-Za-z])(?=.*\d)(?=.*[@$!%*#?&])[A-Za-z\d@$!%*#?&]{8,}$/,
      "Must Contain 8 Characters, One Uppercase, One Lowercase, One Number and one special case Character"
    ),

但对我来说，这实际上并没有检查是否同时存在大写和小写字符。不过，这确实对我有用（检查特殊字符、大写字符、小写字符和数字）：

password: yup
    .string()
    .required('Please Enter your password')
    .matches(
     /^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*])(?=.{8,})/,
      "Must Contain 8 Characters, One Uppercase, One Lowercase, One Number and one special case Character"
    ),
于 2021-03-19T08:07:44.940 回答
2 
yup.addMethod(yup.string, "strongPassword", strongPasswordMethod);

function strongPasswordMethod() {
    return this.test("strongPasswordTest", _, function (value) {
        const { path, createError } = this;
        switch (Boolean(value)) {
            case !/^(?=.*[a-z])/.test(value):
                return createError({ path, message: "password must include lowercase letter" });
            case !/^(?=.*[A-Z])/.test(value):
                return createError({ path, message: "password must include uppercase letter" });
            case !/^(?=.*[0-9])/.test(value):
                return createError({ path, message: "password must include digit" });
            case !/^(?=.*[!@#\$%\^&\*])/.test(value):
                return createError({ path, message: "password must include special character" });
            default:
                return true;
        }
    });
};

const schema = yup.object().shape({
    password: yup.string().required().strongPassword()
});
于 2021-11-11T13:46:37.630 回答
0

考虑到上面的所有答案并经过一些研究，一种综合方法可以是检查密码的强度：

password: Yup
    .string()
    .required('Required')
    .matches(/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*#?&])[A-Za-z\d@$!%*#?&]{8,}$/,
    "Must Contain 8 Characters, One Uppercase, One Lowercase, One Number and one special case Character"
  )

但是，这种方法不适用于所有特殊字符。如果您想包含此处列出的所有可能的特殊字符。该解决方案可以修改为：

password: Yup
    .string()
    .required('Required')
    .matches(/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~])[A-Za-z\d!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~]{8,}$/,
    "Must Contain 8 Characters, One Uppercase, One Lowercase, One Number and one special case Character"
  )

这是我在应用程序中采用的解决方案。但这完全是您的选择，您希望在密码强度检查中包含/排除哪些特殊字符。

于 2021-07-15T06:07:39.047 回答
0

我决定改为进行自己的自定义验证。

这是我所做的：-

password: Yup.string()
      .required("Please Enter your password")
      .min(5, "Your password must be longer than 5 characters.")
      .max(25)
      .matches(/^(?=.{6,})/, "Must Contain 6 Characters")
      .matches(
        /^(?=.*[a-z])(?=.*[A-Z])/,
        "Must Contain One Uppercase, One Lowercase"
      )
      .matches(
        /^(?=.*[!@#\$%\^&\*])/,
        "Must Contain One Special Case Character"
      )
      .matches(/^(?=.{6,20}$)\D*\d/, "Must Contain One Number"),
于 2022-03-05T13:20:59.617 回答
-4

这对我有用：

 password: yup
    .string()
    .required('Password is required')
    .matches(regExp)
    .min(6, 'Your password must be longer than 6 characters.')
于 2020-08-06T08:29:23.700 回答