React'ning experimental_useOptimistic hook'i yordamida parallel yangilanishlarni o'zlashtirish: Global qo'llanma

            import React, { experimental_useOptimistic, useState } from 'react';

function Post({ postId, likeCount, onLike }) {
  const [optimisticLikes, addOptimisticLike] = experimental_useOptimistic(
    likeCount,  // Boshlang'ich qiymat
    (currentLikes) => currentLikes + 1, // Yangilash funksiyasi
    (currentLikes, originalLikeCount) => originalLikeCount // Orqaga qaytarish funksiyasi
  );

  const [isLiking, setIsLiking] = useState(false);
  const [likeError, setLikeError] = useState(null);

  const handleLike = async () => {
    setIsLiking(true);
    setLikeError(null);
    const optimisticId = addOptimisticLike(likeCount);

    try {
      await onLike(postId);
    } catch (error) {
      setLikeError(error);
      // Optimistik yangilanishni bekor qilish
      addOptimisticLike(likeCount, optimisticId);
    } finally {
      setIsLiking(false);
    }
  };

  return (
    

      
        {isLiking ? 'Yoqmoqda...' : 'Yoqdi'}
      
      Layklar: {optimisticLikes}
      {likeError && 
Postni yoqtirishda xatolik: {likeError.message}
}
    
  );
}

// Foydalanish misoli (API chaqiruvini taxmin qilib)
function App() {
  const [posts, setPosts] = useState([
    { id: 1, likeCount: 10 },
    { id: 2, likeCount: 5 },
  ]);

  const handleLike = async (postId) => {
    // API chaqiruvini simulyatsiya qilish (masalan, AQShdagi serverga)
    await new Promise((resolve) => setTimeout(resolve, 1000));

    // Potensial xatoni simulyatsiya qilish (masalan, tarmoq muammosi)
    // if (Math.random() < 0.2) {
    //   throw new Error('Postni yoqtirishda xatolik yuz berdi.');
    // }

    // Postning layklar sonini serverda yangilash (haqiqiy ilovada)
    setPosts((prevPosts) =>
      prevPosts.map((post) =>
        post.id === postId ? { ...post, likeCount: post.likeCount + 1 } : post
      )
    );
  };

  return (
    

      {posts.map((post) => (
        
      ))}
    
  );
}

export default App;

            

              
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            import React, { experimental_useOptimistic, useState, useEffect } from 'react';

function DocumentEditor({ documentId, content, onContentChange }) {
  const [optimisticContent, setOptimisticContent] = experimental_useOptimistic(
    content, // Boshlang'ich kontent
    (currentContent, newContent) => newContent,  // Yangilash funksiyasi
    (currentContent, originalContent) => originalContent // Orqaga qaytarish funksiyasi
  );

  const [isSaving, setIsSaving] = useState(false);
  const [saveError, setSaveError] = useState(null);

  useEffect(() => {
    const saveContent = async () => {
      if (!isSaving && optimisticContent !== content) {
        setIsSaving(true);
        setSaveError(null);

        try {
          await onContentChange(documentId, optimisticContent);
        } catch (error) {
          setSaveError(error);
          // Ixtiyoriy ravishda, xatolik yuzaga kelganda kontentni orqaga qaytarish.
        }
        finally {
          setIsSaving(false);
        }
      }
    };
    saveContent();
  }, [optimisticContent, content, documentId, onContentChange, isSaving]);

  const handleChange = (event) => {
    setOptimisticContent(event.target.value);
  };

  return (
    

            {isSaving && <span>Saqlanmoqda...</span>}
      {saveError && <p style={{ color: 'red' }}>Saqlashda xatolik: {saveError.message}</p>}
    </div>
  );
}

function App() {
  const [documentContent, setDocumentContent] = useState('Boshlang\'ich kontent');

  const handleContentChange = async (documentId, newContent) => {
    // API chaqiruvini simulyatsiya qilish (masalan, Avstraliyadagi serverga)
    await new Promise((resolve) => setTimeout(resolve, 1500));

    // Potensial xatoni simulyatsiya qilish
    if (Math.random() < 0.1) {
      throw new Error('Hujjatni saqlashda xatolik yuz berdi.');
    }
    setDocumentContent(newContent);
  };

  return (
    <DocumentEditor documentId={1} content={documentContent} onContentChange={handleContentChange} />
  );
}

export default App;
</code>
            <div class="copy-button-container">
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                class="copy-button"
                title="Copy code"
              >
                Copy
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            </div>
          </pre>
        </div>
      

<p>Ushbu misolda:</p>

<ul>
  <li><code>experimental_useOptimistic</code> hujjat tarkibini boshqaradi.</li>
  <li>Yangilash funksiyasi foydalanuvchining kiritgan ma'lumotlarini <code>textarea</code> da darhol aks ettiradi.</li>
  <li><code>useEffect</code> hook'i optimistik tarkib o'zgarganda (va boshlang'ichidan farq qilganda) asinxron saqlash operatsiyasini ishga tushiradi.</li>
  <li>UI saqlash operatsiyasi paytida 'Saqlanmoqda...' indikatorini ko'rsatib, foydalanuvchiga aniq fikr-mulohaza beradi.</li>
  <li>Orqaga qaytarish funksiyasi yanada murakkab amalga oshirishda har qanday o'zgarishlarni bekor qilish va API chaqiruvi muvaffaqiyatsiz bo'lsa `content` qiymati bilan qayta render qilish uchun ishlatilishi mumkin.</li>
</ul>

<h2>Murakkab foydalanish holatlari va mulohazalar</h2>

<h3>Yangilanishlarni guruhlash</h3>

<p>Ba'zi hollarda, unumdorlikni oshirish va qayta renderlar sonini kamaytirish uchun bir nechta optimistik yangilanishlarni guruhlashni xohlashingiz mumkin. <code>experimental_useOptimistic</code> buni uddalay oladi, ammo aniq amalga oshirish ilovangizning talablariga bog'liq.</p>

<p>Keng tarqalgan yondashuvlardan biri bir nechta xususiyatlarni o'z ichiga olgan yagona optimistik holat obyektidan foydalanishdir. Biror harakat bir nechta xususiyatlarni o'zgartirganda, ularni bir vaqtning o'zida yangilashingiz mumkin.</p>

<h3>Xatoliklarni qayta ishlash va orqaga qaytarish strategiyalari</h3>

<p>Yaxshi foydalanuvchi tajribasi uchun mustahkam xatoliklarni qayta ishlash juda muhimdir. API chaqiruvi muvaffaqiyatsiz bo'lganda, xatoni qanday hal qilishni hal qilishingiz kerak bo'ladi. Umumiy strategiyalarga quyidagilar kiradi:</p>

<ul>
  <li><strong>Xato xabarlarini ko'rsatish:</strong> Foydalanuvchiga nima noto'g'ri bo'lganligini ko'rsatadigan aniq xato xabarlarini taqdim etish.</li>
  <li><strong>Optimistik yangilanishlarni bekor qilish:</strong> Optimistik UI o'zgarishlarini oldingi holatga qaytarish.</li>
  <li><strong>Operatsiyani qayta urinish:</strong> Vaqtinchalik xatolar uchun qayta urinish mexanizmini amalga oshirish.</li>
</ul>

<p>Strategiya tanlovi xatoning jiddiyligiga va muayyan foydalanuvchi o'zaro ta'siriga bog'liq.</p>

<h3>Testlash va nosozliklarni tuzatish</h3>

<p><code>experimental_useOptimistic</code>'dan foydalanadigan ilovalarni testlash ehtiyotkorlikni talab qiladi:</p>

<ul>
  <li><strong>Asinxron operatsiyalarni mock qilish:</strong> API chaqiruvlarini mock qilish va turli stsenariylarni (muvaffaqiyat, muvaffaqiyatsizlik, tarmoq muammolari) simulyatsiya qilish uchun mock freymvorklaridan (masalan, Jest, React Testing Library) foydalaning.</li>
  <li><strong>UI yangilanishlarini testlash:</strong> UI optimistik yangilanishlar va xatolik holatlariga to'g'ri javob berishini tekshiring.</li>
  <li><strong>Nosozliklarni tuzatish vositalari:</strong> Holatni tekshirish va potensial muammolarni aniqlash uchun brauzer dasturchi vositalaridan (masalan, React DevTools) foydalaning.</li>
</ul>

<h3>Global mulohazalar va lokalizatsiya</h3>

<p><code>experimental_useOptimistic</code> bilan global ilovalar yaratishda quyidagi omillarni hisobga oling:</p>

<ul>
  <li><strong>Unumdorlik va tarmoq kechikishi:</strong> Optimistik UI ning unumdorlikka ta'siri, ayniqsa yuqori tarmoq kechikishi bo'lgan hududlarda muhim bo'lishi mumkin. API chaqiruvlaringizni optimallashtiring va ma'lumotlarni keshlash kabi texnikalarni ko'rib chiqing.</li>
  <li><strong>Lokalizatsiya:</strong> Barcha xato xabarlari va UI elementlari turli tillar va madaniyatlar uchun lokalizatsiya qilinganligiga ishonch hosil qiling.</li>
  <li><strong>Vaqt zonalari va sana/vaqt formatlari:</strong> Turli vaqt zonalaridagi foydalanuvchilar uchun chalkashliklarni oldini olish uchun sana/vaqt formatlarini to'g'ri boshqaring.</li>
  <li><strong>Valyuta va raqam formatlash:</strong> Valyuta va raqamlarni turli mintaqalar uchun mos ravishda formatlang.</li>
  <li><strong>Foydalanish imkoniyati:</strong> UI'ning joylashuvidan qat'i nazar, nogironligi bo'lgan foydalanuvchilar uchun ochiq bo'lishini ta'minlang. Bunga ARIA atributlaridan to'g'ri foydalanish, rang kontrasti va klaviatura navigatsiyasi kiradi.</li>
</ul>

<h2>Eng yaxshi amaliyotlar va amaliy tavsiyalar</h2>

<ul>
  <li><strong>Oddiydan boshlang:</strong> Murakkab stsenariylarda amalga oshirishdan oldin <code>experimental_useOptimistic</code> qanday ishlashini tushunish uchun oddiy foydalanish holatlaridan boshlang.</li>
  <li><strong>Foydalanuvchi tajribasiga ustunlik bering:</strong> Har doim foydalanuvchi tajribasiga ustunlik bering. Asinxron operatsiyalarni boshqarishda ham UI'ning sezgir bo'lishini ta'minlang.</li>
  <li><strong>Xatoliklarni bemalol hal qiling:</strong> Foydalanuvchilarga foydali fikr-mulohaza berish va ma'lumotlar nomuvofiqligini oldini olish uchun mustahkam xatoliklarni qayta ishlashni amalga oshiring.</li>
  <li><strong>Puxta test qiling:</strong> Ilovangiz parallel yangilanishlar va poyga holatlarini to'g'ri boshqarishiga ishonch hosil qilish uchun uni sinchkovlik bilan test qiling.</li>
  <li><strong>Tarmoq sharoitlarini hisobga oling:</strong> Turli mintaqalardagi o'zgaruvchan tarmoq sharoitlarini hisobga oling. API chaqiruvlaringizni optimallashtiring va kerak bo'lganda keshlashdan foydalaning.</li>
  <li><strong>Serverda atomar operatsiyalarni qo'llang:</strong> Server tomonidagi mantig'ingizda atomar operatsiyalarni afzal ko'ring.</li>
</ul>

<h2>Xulosa: Parallel yangilanishlarni boshqarish bilan global ilovalarni kuchaytirish</h2>

<p>React'ning <code>experimental_useOptimistic</code> hook'i zamonaviy veb-ilovalarda parallel yangilanishlarni boshqarish va foydalanuvchi tajribasini yaxshilash uchun kuchli va nafis yechim taklif etadi. Optimistik UI'ni qo'llash, asinxron operatsiyalarni bemalol boshqarish va foydalanuvchilarga aniq fikr-mulohaza berish orqali siz yanada sezgir va chidamli global ilovalarni yaratishingiz mumkin.</p>

<p>Ushbu qo'llanma <code>experimental_useOptimistic</code>'ning asosiy tushunchalari, amaliy misollari va global ilovalar uchun mulohazalarni o'z ichiga olgan keng qamrovli ko'rinishni taqdim etdi. Ushbu kuchli vositani o'zlashtirish orqali dasturchilar o'zlarining React ilovalarining unumdorligini va foydalanuvchi tajribasini, foydalanuvchilarining geografik joylashuvi va texnologik qiyinchiliklaridan qat'i nazar, sezilarli darajada oshirishlari mumkin. Ilovalaringiz innovatsiyalar oldida qolishini ta'minlash uchun React va front-end dasturlashdagi so'nggi yutuqlardan xabardor bo'lib turishni unutmang.</p></div><footer class="mt-12 pt-8 border-t border-gray-200"><h3 class="text-sm font-semibold text-gray-900 mb-3 dark:text-white/90">Tags:</h3><div class="flex flex-wrap gap-2"><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">react</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">experimental_useOptimistic</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">optimistik ui</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">parallel yangilanishlar</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">poyga holatlari</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">holatni boshqarish</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">javascript</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">front-end dasturlash</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">global ilovalar</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">unumdorlik</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">foydalanuvchi tajribasi</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">react hook'lari</span><span class="inline-block bg-gray-100 text-gray-800 px-3 py-1 rounded-full text-sm hover:bg-gray-200 transition-colors dark:bg-neutral-800 dark:text-white dark:hover:bg-neutral-700">asinxron amallar</span></div></footer></article></div><script>$RS=function(a,b){a=document.getElementById(a);b=document.getElementById(b);for(a.parentNode.removeChild(a);a.firstChild;)b.parentNode.insertBefore(a.firstChild,b);b.parentNode.removeChild(b)};$RS("S:2","P:2")</script><script>$RB=[];$RV=function(b){$RT=performance.now();for(var a=0;a<b.length;a+=2){var c=b[a],e=b[a+1];null!==e.parentNode&&e.parentNode.removeChild(e);var f=c.parentNode;if(f){var g=c.previousSibling,h=0;do{if(c&&8===c.nodeType){var d=c.data;if("/$"===d||"/&"===d)if(0===h)break;else h--;else"$"!==d&&"$?"!==d&&"$~"!==d&&"$!"!==d&&"&"!==d||h++}d=c.nextSibling;f.removeChild(c);c=d}while(c);for(;e.firstChild;)f.insertBefore(e.firstChild,c);g.data="$";g._reactRetry&&g._reactRetry()}}b.length=0};
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