Menguasai Hook useFormStatus React: Panduan Komprehensif untuk Pengembang Global

            
import { useFormStatus } from 'react-dom';

function MyForm() {
  const { pending } = useFormStatus();

  const handleSubmit = async (event) => {
    event.preventDefault();

    // Simulate an API call
    await new Promise(resolve => setTimeout(resolve, 2000));
    console.log('Form submitted!');
  };

  return (
    <form onSubmit={handleSubmit}>
      <label htmlFor='name'>Name:</label>
      <input type='text' id='name' name='name' /><br />

      <button type='submit' disabled={pending}>
        {pending ? 'Submitting...' : 'Submit'}
      </button>
    </form>
  );
}

            

              
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import { useFormStatus } from 'react-dom';

function MyForm() {
  const { pending, method, action } = useFormStatus();

  const handleSubmit = async (formData) => {
    // Simulate an API call
    const response = await fetch('/api/submit-form', {
      method: 'POST',
      body: formData
    });

    if (response.ok) {
        console.log('Form submitted successfully!');
    } else {
        console.error('Form submission failed.');
    }
  };

  return (
    <form action={handleSubmit} method='POST'>
      <label htmlFor='name'>Name:</label>
      <input type='text' id='name' name='name' /><br />

      <button type='submit' disabled={pending}>
        {pending ? 'Submitting...' : 'Submit'}
      </button>
    </form>
  );
}

            

              
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import { useFormStatus } from 'react-dom';

function MyForm() {
  const { pending, data, action } = useFormStatus();

    async function handleSubmit(formData) {
        // Simulate an API call that uses the data
        const response = await fetch('/api/submit-form', {
            method: 'POST',
            body: formData
        });
        if (response.ok) {
            console.log('Form submitted successfully!');
        } else {
            console.error('Form submission failed.');
        }
    }

  return (
    <form action={handleSubmit} method='POST'>
      <label htmlFor='name'>Name:</label>
      <input type='text' id='name' name='name' /><br />

      <button type='submit' disabled={pending}>
        {pending ? 'Submitting...' : 'Submit'}
      </button>
    </form>
  );
}

            

              
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import { useTranslation } from 'react-i18next';
import { useFormStatus } from 'react-dom';

function MyForm() {
  const { t } = useTranslation();
  const { pending } = useFormStatus();

  return (
    <form>
      <label htmlFor='name'>{t('nameLabel')}:</label>
      <input type='text' id='name' name='name' /><br />
      <button type='submit' disabled={pending}>{pending ? t('submitting') : t('submit')}</button>
    </form>
  );
}

            

              
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const amount = 1234.56;
const formattedAmount = new Intl.NumberFormat(userLocale, { style: 'currency', currency: 'USD' }).format(amount);
// Output: $1,234.56 (US locale)
// Output: 1 234,56 $ (French locale)

            

              
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import { useFormStatus } from 'react-dom';

function MyForm() {
  const { pending } = useFormStatus();

  const handleSubmit = async (event) => {
    event.preventDefault();
    // Simulate API call
    await new Promise(resolve => setTimeout(resolve, 2000));
    console.log('Form submitted!');
  };

  return (
    <form onSubmit={handleSubmit}>
      <label htmlFor='name'>Name:</label>
      <input type='text' id='name' name='name' /><br />
      <button type='submit' disabled={pending}>
        {pending ? ( <img src='/loading.gif' alt='Loading' /> ) : 'Submit'}
      </button>
    </form>
  );
}

            

              
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import { useFormStatus } from 'react-dom';
import { useState } from 'react';

function ContactForm() {
  const [submissionResult, setSubmissionResult] = useState(null);
  const { pending } = useFormStatus();

  async function handleSubmit(formData) {
    try {
      const response = await fetch('/api/contact', {
        method: 'POST',
        body: formData
      });
      if (response.ok) {
        setSubmissionResult('success');
      } else {
        setSubmissionResult('error');
      }
    } catch (error) {
      setSubmissionResult('error');
      console.error('Submission error:', error);
    }
  }

  return (
    <form action={handleSubmit} method='POST'>
      <label htmlFor='name'>Name:</label>
      <input type='text' id='name' name='name' /><br />

      <label htmlFor='email'>Email:</label>
      <input type='email' id='email' name='email' /><br />

      <label htmlFor='message'>Message:</label>
      <textarea id='message' name='message' /><br />

      <button type='submit' disabled={pending}>
        {pending ? 'Submitting...' : 'Send Message'}
      </button>

      {submissionResult === 'success' && <p>Message sent successfully!</p>}
      {submissionResult === 'error' && <p style={{ color: 'red' }}>There was an error sending your message. Please try again.</p>}
    </form>
  );
}

            

              
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import { useFormStatus } from 'react-dom';
import { useState } from 'react';

function SignUpForm() {
  const [errors, setErrors] = useState({});
  const { pending } = useFormStatus();

  const validateForm = (formData) => {
    const newErrors = {};
    if (!formData.name) {
      newErrors.name = 'Name is required.';
    }
    if (!formData.email) {
      newErrors.email = 'Email is required.';
    }
    // Add more validation rules as needed
    return newErrors;
  };

  async function handleSubmit(formData) {
    const formErrors = validateForm(formData);
    if (Object.keys(formErrors).length > 0) {
      setErrors(formErrors);
      return;
    }

    try {
      const response = await fetch('/api/signup', {
        method: 'POST',
        body: formData
      });
      if (response.ok) {
        // Handle successful signup
        alert('Signup successful!');
      } else {
        // Handle signup errors
        alert('Signup failed. Please try again.');
      }
    } catch (error) {
      console.error('Signup error:', error);
    }
  }

  return (
    <form action={handleSubmit} method='POST'>
      <label htmlFor='name'>Name:</label>
      <input type='text' id='name' name='name' />
      {errors.name && <span style={{ color: 'red' }}>{errors.name}</span>}<br />

      <label htmlFor='email'>Email:</label>
      <input type='email' id='email' name='email' />
      {errors.email && <span style={{ color: 'red' }}>{errors.email}</span>}<br />

      <button type='submit' disabled={pending}>
        {pending ? 'Signing Up...' : 'Sign Up'}
      </button>
    </form>
  );
}

            

              
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import { useFormStatus } from 'react-dom';
import { useState } from 'react';

function CheckoutForm() {
  const { pending, action } = useFormStatus();
  const [step, setStep] = useState(1); // Step 1: Shipping, Step 2: Payment, Step 3: Review
  const [shippingInfo, setShippingInfo] = useState({});
  const [paymentInfo, setPaymentInfo] = useState({});

  // Implement separate submit handlers for each step

  const handleShippingSubmit = async (formData) => {
    // Validate shipping info
    // if (validationError) return;
    setShippingInfo(formData);
    setStep(2);
  }

  const handlePaymentSubmit = async (formData) => {
    // Validate payment info
    // if (validationError) return;
    setPaymentInfo(formData);
    setStep(3);
  }

  const handleConfirmOrder = async (formData) => {
    // Submit order to backend
    // ...
  }

  return (
    <form action={step === 1 ? handleShippingSubmit : step === 2 ? handlePaymentSubmit : handleConfirmOrder} method='POST'>
      {step === 1 && (
        <div>
          <h2>Shipping Information</h2>
          <label htmlFor='address'>Address:</label>
          <input type='text' id='address' name='address' /><br />
          <button type='submit' disabled={pending}>
            {pending ? 'Saving...' : 'Next'}
          </button>
        </div>
      )}

      {step === 2 && (
        <div>
          <h2>Payment Information</h2>
          <label htmlFor='cardNumber'>Card Number:</label>
          <input type='text' id='cardNumber' name='cardNumber' /><br />
          <button type='submit' disabled={pending}>
            {pending ? 'Processing...' : 'Next'}
          </button>
        </div>
      )}

      {step === 3 && (
        <div>
          <h2>Review Order</h2>
          <p>Shipping Information: {JSON.stringify(shippingInfo)}</p>
          <p>Payment Information: {JSON.stringify(paymentInfo)}</p>
          <button type='submit' disabled={pending}>
            {pending ? 'Placing Order...' : 'Place Order'}
          </button>
        </div>
      )}
    </form>
  );
}

            

              
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