What is the method for performing password validation in react js using joi schema?

edit

Here are the steps for performing password validation in React JS using Joi schema:

1. Import the 'joi' module using the syntax: import Joi from 'joi';

2. Define a schema for the password validation, which includes the validation rules for the password. For example, you could use the following code to define a simple schema that checks for a minimum password length of 6 characters:

const passwordSchema = Joi.object({
  password: Joi.string().min(6).required(),
});

1. Create a function that will handle the validation of the password using the Joi schema. This function will take the password value as input, and return an object that contains an error message if the validation fails, or null if the validation succeeds.

function validatePassword(password) {
  const { error } = passwordSchema.validate({ password });
  if (error) {
    return error.details[0].message;
  }
  return null;
}

1. Use this function in your React component to validate the password input field. You can call this function on the onChange event of the input field to show the error message in real-time. For example:

function PasswordInput() {
  const [password, setPassword] = useState('');
  const [error, setError] = useState('');

  function handlePasswordChange(event) {
    setPassword(event.target.value);
    setError(validatePassword(event.target.value));
  }

  return (
    <div>
      <label>Password:</label>
      <input type="password" value={password} onChange={handlePasswordChange} />
      {error && <div className="error">{error}</div>}
    </div>
  );
}

In this example, the state 'error' will be set to the error message returned by the validatePassword function, which will be displayed below the password input field when it is not null.