{"id":18630,"date":"2025-04-19T22:00:19","date_gmt":"2025-04-19T19:00:19","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/react-ogrenirken-yaptigim-7-hata-ve-nasil-duzeltildi\/"},"modified":"2025-04-19T22:00:19","modified_gmt":"2025-04-19T19:00:19","slug":"react-ogrenirken-yaptigim-7-hata-ve-nasil-duzeltildi","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/react-ogrenirken-yaptigim-7-hata-ve-nasil-duzeltildi\/","title":{"rendered":"React \u00d6\u011frenirken Yapt\u0131\u011f\u0131m 7 Hata (Ve Nas\u0131l D\u00fczeltildi)"},"content":{"rendered":"<p><body><\/p>\n<p>React \u00d6\u011frenirken Yapt\u0131\u011f\u0131m 7 Hata (Ve Nas\u0131l D\u00fczeltildi)<\/p>\n<p>Merhaba!  Ben Fatih Soysal ve bu yaz\u0131da React \u00f6\u011frenmeye yeni ba\u015flayanlar\u0131n s\u0131kl\u0131kla yapt\u0131\u011f\u0131 7 hatay\u0131 ve bunlar\u0131 nas\u0131l a\u015ft\u0131\u011f\u0131m\u0131 payla\u015faca\u011f\u0131m.  Umar\u0131m bu deneyimlerim size zaman kazand\u0131r\u0131r ve \u00f6\u011frenme yolculu\u011funuzu kolayla\u015ft\u0131r\u0131r.  \u00d6ncelikle \u015funu belirtmeliyim ki,  herkesin \u00f6\u011frenme stili farkl\u0131d\u0131r ve bu hatalar herkeste olmayabilir.  Ancak bu hatalar\u0131n genel olarak yayg\u0131n oldu\u011funu s\u00f6yleyebilirim.  Hadi ba\u015flayal\u0131m!<\/p>\n<h2>1. State Y\u00f6netimini Anlamamak<\/h2>\n<p>Ba\u015flang\u0131\u00e7ta, React&#8217;in state mekanizmas\u0131n\u0131 tam olarak kavramakta zorland\u0131m.  \u00d6zellikle b\u00fcy\u00fck uygulamalarda state&#8217;i nas\u0131l etkili bir \u015fekilde y\u00f6netece\u011fimi bilemiyordum.  Sonu\u00e7 olarak, gereksiz yeniden render&#8217;lar ve performans sorunlar\u0131yla kar\u015f\u0131la\u015ft\u0131m.  Bunun \u00e7\u00f6z\u00fcm\u00fc i\u00e7in <strong>useReducer<\/strong> ve <strong>Context API<\/strong> gibi React&#8217;in sundu\u011fu g\u00fc\u00e7l\u00fc state y\u00f6netim ara\u00e7lar\u0131n\u0131 \u00f6\u011frenmem gerekiyordu.  Ayr\u0131ca, Redux gibi \u00fc\u00e7\u00fcnc\u00fc parti k\u00fct\u00fcphaneleri ara\u015ft\u0131r\u0131p bunlar\u0131n ne zaman kullan\u0131laca\u011f\u0131n\u0131 anlamak \u00f6nemlidir.  \u00d6rne\u011fin, basit bir uygulama i\u00e7in Redux kullanmak gereksiz karma\u015f\u0131kl\u0131\u011fa yol a\u00e7abilir.<\/p>\n<h2>2. Props&#8217;lar\u0131n Do\u011fru Kullan\u0131m\u0131<\/h2>\n<p>Ba\u015flarda, props&#8217;lar\u0131 do\u011fru kullanmakta zorland\u0131m.  \u00d6zellikle, props&#8217;lar\u0131 componentler aras\u0131nda nas\u0131l etkili bir \u015fekilde aktaraca\u011f\u0131m\u0131 ve veri ak\u0131\u015f\u0131n\u0131 nas\u0131l optimize edece\u011fimi bilmiyordum.  Bu durum, kodun okunabilirli\u011fini ve bak\u0131m\u0131 zorla\u015ft\u0131rd\u0131.  Sonras\u0131nda, props drilling sorununu \u00f6nlemek i\u00e7in Context API&#8217;yi kullanmay\u0131 ve  componentleri daha k\u00fc\u00e7\u00fck ve daha \u00f6zelle\u015fmi\u015f par\u00e7alara ay\u0131rmay\u0131 \u00f6\u011frendim. Bu sayede daha d\u00fczenli ve anla\u015f\u0131l\u0131r bir kod yap\u0131s\u0131 olu\u015fturdum.  Ayr\u0131ca, fonksiyonel componentler ile props kullan\u0131m\u0131n\u0131n ne kadar kolay ve etkili oldu\u011funu deneyimledim. <\/p>\n<h2>3.  Key&#8217;lerin \u00d6nemini Anlamamak<\/h2>\n<p>Listeler render edilirken, React&#8217;in sanal DOM&#8217;u g\u00fcncellemek i\u00e7in key prop&#8217;unu kullan\u0131r.  Ben bu prop&#8217;un \u00f6nemini ilk ba\u015fta tam olarak anlamad\u0131m.  Sonu\u00e7 olarak, performans sorunlar\u0131 ve beklenmedik davran\u0131\u015flarla kar\u015f\u0131la\u015ft\u0131m.  \u015eimdi ise, liste \u00f6\u011felerine benzersiz bir key ataman\u0131n ne kadar \u00f6nemli oldu\u011funu biliyorum.  Bu, React&#8217;in listeleri daha verimli bir \u015fekilde g\u00fcncellemesine yard\u0131mc\u0131 olur.  Her bir \u00f6\u011fe i\u00e7in benzersiz bir ID veya indeks kullanarak bu sorunu \u00e7\u00f6zebilirsiniz. Unutmay\u0131n ki indeks kullanmak her zaman en ideal \u00e7\u00f6z\u00fcm de\u011fildir.<\/p>\n<h2>4. Async\/Await ve Promise&#8217;leri Anlamama<\/h2>\n<p>React, asenkron i\u015flemleri y\u00f6netmek i\u00e7in Promise&#8217;ler ve async\/await kullan\u0131r.  Bu konular\u0131 yeterince anlamad\u0131\u011f\u0131m i\u00e7in, veri alma i\u015flemlerinde s\u0131k s\u0131k sorunlar ya\u015fad\u0131m.  Bunu a\u015fmak i\u00e7in, Promise&#8217;ler ve async\/await&#8217;in \u00e7al\u0131\u015fma prensiplerini detayl\u0131 bir \u015fekilde inceleyip bolca pratik yapt\u0131m.  Ayr\u0131ca, API \u00e7a\u011fr\u0131lar\u0131 gibi asenkron i\u015flemleri nas\u0131l do\u011fru \u015fekilde handle edece\u011fimi \u00f6\u011frendim.  <code>try...catch<\/code> bloklar\u0131 kullanarak hata y\u00f6netimini daha robust hale getirdim. <\/p>\n<pre><code>\n  \/\/ \u00d6rnek async\/await kullan\u0131m\u0131\n  async function fetchData() {\n    try {\n      const response = await fetch('api\/data');\n      const data = await response.json();\n      \/\/ Verileri i\u015fle\n    } catch (error) {\n      \/\/ Hata y\u00f6netimi\n      console.error('Hata:', error);\n    }\n  }\n<\/code><\/pre>\n<h2>5.  Hook&#8217;lar\u0131 Etkili Kullanamama<\/h2>\n<p>React Hook&#8217;lar\u0131, fonksiyonel componentlerde state ve di\u011fer React \u00f6zelliklerine eri\u015fmeyi sa\u011flar.  Hook&#8217;lar\u0131 ba\u015flarda yeterince etkili kullanamad\u0131m.  \u00d6zellikle, <code>useEffect<\/code> hook&#8217;unu yanl\u0131\u015f kullanarak performans sorunlar\u0131na sebep oldum.  Daha sonra, <code>useEffect<\/code>&#8216;in ikinci parametresini (dependency array) do\u011fru bir \u015fekilde kullanmay\u0131 \u00f6\u011frendim. Bu sayede gereksiz yeniden render&#8217;lar\u0131 \u00f6nledim ve uygulaman\u0131n performans\u0131n\u0131 iyile\u015ftirdim.<\/p>\n<h2>6.  Kod B\u00f6lme ve Optimizasyonu<\/h2>\n<p>B\u00fcy\u00fck uygulamalarda kod b\u00f6lme ve optimizasyon son derece \u00f6nemlidir.  Ba\u015flang\u0131\u00e7ta bunu g\u00f6z ard\u0131 ettim ve uygulaman\u0131n y\u00fckleme s\u00fcresi olduk\u00e7a uzun oldu.  Daha sonra, kodumu daha k\u00fc\u00e7\u00fck, yeniden kullan\u0131labilir componentlere ay\u0131rarak ve gereksiz kodlar\u0131 kald\u0131rarak uygulaman\u0131n boyutunu k\u00fc\u00e7\u00fcltt\u00fcm.  Ayr\u0131ca, <code>React.lazy<\/code> ve <code>Suspense<\/code> componentlerini kullanarak kod b\u00f6lmesini uygulad\u0131m.  Bu sayede uygulama daha h\u0131zl\u0131 y\u00fcklendi ve kullan\u0131c\u0131 deneyimi iyile\u015fti.<\/p>\n<h2>7.  Yeterince Pratik Yapmamak<\/h2>\n<p>Son olarak ve belki de en \u00f6nemlisi,  yeterince pratik yapmamak.  React \u00f6\u011frenmek teorik bilgiyi anlamakla s\u0131n\u0131rl\u0131 de\u011fil, bolca pratik yapmak ve ger\u00e7ek d\u00fcnya projeleri geli\u015ftirmek gerekiyor.  Kendi projelerimi geli\u015ftirmeye ve  React toplulu\u011funa kat\u0131larak di\u011fer geli\u015ftiricilerle deneyimlerimi payla\u015fmaya ba\u015flad\u0131\u011f\u0131mda, \u00e7ok daha h\u0131zl\u0131 ilerleme kaydettim.  S\u00fcrekli \u00f6\u011frenmeye ve yeni teknolojileri takip etmeye devam etmelisiniz.  Bu da,  ba\u015far\u0131l\u0131 bir React geli\u015ftiricisi olman\u0131n anahtar\u0131d\u0131r.<\/p>\n<p>Umar\u0131m bu deneyimlerim size faydal\u0131 olmu\u015ftur.  Daha fazla React ve web geli\u015ftirme i\u00e7eri\u011fi i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a> adresini ziyaret edebilirsiniz.  Ba\u015fka sorular\u0131n\u0131z varsa yorumlarda sorabilirsiniz.  Bol \u015fans!<\/p>\n<p>Faydal\u0131 bulabilece\u011finiz kaynaklar:<\/p>\n<ul>\n<li><a href=\"https:\/\/reactjs.org\/docs\/getting-started.html\">React Resmi Dok\u00fcmanlar\u0131<\/a><\/li>\n<li><a href=\"https:\/\/dev.to\/madifrontend\/7-mistakes-i-made-when-i-first-learned-react-and-how-i-fixed-them-4e3\">\u0130ngilizce Makale Kayna\u011f\u0131<\/a><\/li>\n<\/ul>\n<p>#Etiketler: React, React \u00f6\u011frenme, React hatalar\u0131, JavaScript, frontend, web geli\u015ftirme, state y\u00f6netimi, props, hook, async\/await, kod b\u00f6lme, optimizasyon,  performans, hata d\u00fczeltme, ipu\u00e7lar\u0131,  useReducer, Context API, useEffect, React.lazy, Suspense<br \/>\n<\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"React \u00d6\u011frenirken Yapt\u0131\u011f\u0131m 7 Hata (Ve Nas\u0131l D\u00fczeltildi) Merhaba! Ben Fatih Soysal ve bu yaz\u0131da React \u00f6\u011frenmeye yeni&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-18630","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>React \u00d6\u011frenirken Yapt\u0131\u011f\u0131m 7 Hata (Ve Nas\u0131l D\u00fczeltildi)<\/title>\n<meta name=\"description\" content=\"Merhaba! Ben Fatih Soysal ve bu yaz\u0131da React \u00f6\u011frenmeye yeni ba\u015flayanlar\u0131n s\u0131kl\u0131kla yapt\u0131\u011f\u0131 7 hatay\u0131 ve bunlar\u0131 nas\u0131l a\u015ft\u0131\u011f\u0131m\u0131 payla\u015faca\u011f\u0131m. Umar\u0131m bu deneyimlerim size zaman kazand\u0131r\u0131r ve \u00f6\u011frenme yolculu\u011funuzu kolayla\u015ft\u0131r\u0131r. \u00d6ncelikle \u015funu belirtmeliyim ki, herkesin \u00f6\u011frenme stili farkl\u0131d\u0131r ve bu hatalar herkeste olmayabilir. Ancak bu hatalar\u0131n genel olarak yayg\u0131n oldu\u011funu s\u00f6yleyebilirim. 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Umar\u0131m bu deneyimlerim size zaman kazand\u0131r\u0131r ve \u00f6\u011frenme yolculu\u011funuzu kolayla\u015ft\u0131r\u0131r. \u00d6ncelikle \u015funu belirtmeliyim ki, herkesin \u00f6\u011frenme stili farkl\u0131d\u0131r ve bu hatalar herkeste olmayabilir. Ancak bu hatalar\u0131n genel olarak yayg\u0131n oldu\u011funu s\u00f6yleyebilirim. 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Ben Fatih Soysal ve bu yaz\u0131da React \u00f6\u011frenmeye yeni ba\u015flayanlar\u0131n s\u0131kl\u0131kla yapt\u0131\u011f\u0131 7 hatay\u0131 ve bunlar\u0131 nas\u0131l a\u015ft\u0131\u011f\u0131m\u0131 payla\u015faca\u011f\u0131m. Umar\u0131m bu deneyimlerim size zaman kazand\u0131r\u0131r ve \u00f6\u011frenme yolculu\u011funuzu kolayla\u015ft\u0131r\u0131r. \u00d6ncelikle \u015funu belirtmeliyim ki, herkesin \u00f6\u011frenme stili farkl\u0131d\u0131r ve bu hatalar herkeste olmayabilir. Ancak bu hatalar\u0131n genel olarak yayg\u0131n oldu\u011funu s\u00f6yleyebilirim. 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