{"id":7633,"date":"2024-12-25T11:45:12","date_gmt":"2024-12-25T08:45:12","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/"},"modified":"2024-12-25T11:45:12","modified_gmt":"2024-12-25T08:45:12","slug":"reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/","title":{"rendered":"React&#8217;te useEffect Hook&#8217;unun Temizleme Fonksiyonu: Yanl\u0131\u015f Kullan\u0131mlar ve Do\u011fru Uygulamalar"},"content":{"rendered":"<p>React&#8217;te useEffect Hook&#8217;unun Temizleme Fonksiyonu: Yanl\u0131\u015f Kullan\u0131mlar ve Do\u011fru Uygulamalar<\/p>\n<p>React&#8217;te geli\u015ftirme yaparken s\u0131k\u00e7a kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z <code>useEffect<\/code> hook&#8217;u, bile\u015fenlerin yan etkilerini y\u00f6netmek i\u00e7in g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Ancak,  <code>useEffect<\/code>&#8216;in do\u011fru kullan\u0131m\u0131, \u00f6zellikle temizleme fonksiyonunun \u00f6nemi konusunda, yeni ba\u015flayanlar i\u00e7in kafa kar\u0131\u015f\u0131kl\u0131\u011f\u0131 yaratabilir. Bu makalede,  &#8220;useEffect must not return anything besides a function, which is used for clean-up&#8221; hatas\u0131n\u0131n nedenlerini ve do\u011fru kullan\u0131m\u0131n\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z.<\/p>\n<h2>useEffect ve Temizleme Fonksiyonunun \u00d6nemi<\/h2>\n<p><code>useEffect<\/code>, bile\u015feninizin render edilmesinden sonra (veya belirli bir durum de\u011fi\u015ftikten sonra) yan etkiler ger\u00e7ekle\u015ftirmenizi sa\u011flar. Bu yan etkiler, a\u011f istekleri, zamanlay\u0131c\u0131lar, abonelikler veya do\u011frudan DOM manip\u00fclasyonlar\u0131 olabilir.  Ancak \u00f6nemli olan nokta, bu yan etkilerin bile\u015fen kald\u0131r\u0131ld\u0131\u011f\u0131nda d\u00fczg\u00fcn bir \u015fekilde temizlenmesidir.  \u00d6rne\u011fin, bir a\u011f iste\u011fi yap\u0131yorsan\u0131z ve bile\u015fen kald\u0131r\u0131ld\u0131ktan sonra bu istek hala devam ediyorsa, gereksiz kaynak t\u00fcketimine yol a\u00e7abilir. \u0130\u015fte tam burada temizleme fonksiyonu devreye girer.<\/p>\n<p><code>useEffect<\/code>&#8216;in ikinci arg\u00fcman\u0131, ba\u011f\u0131ml\u0131l\u0131k dizisidir. Bu dizi, <code>useEffect<\/code>&#8216;in ne zaman \u00e7al\u0131\u015faca\u011f\u0131n\u0131 belirler.  Bu dizi bo\u015fsa, <code>useEffect<\/code> yaln\u0131zca bile\u015fen ilk render edildi\u011finde \u00e7al\u0131\u015f\u0131r.  Dizi doluysa, dizi i\u00e7indeki de\u011ferlerden herhangi biri de\u011fi\u015fti\u011finde <code>useEffect<\/code> tekrar \u00e7al\u0131\u015f\u0131r.  Ancak, temizleme fonksiyonu her zaman \u00e7al\u0131\u015f\u0131r, ister ba\u011f\u0131ml\u0131l\u0131k dizisi de\u011fi\u015fsin ister de\u011fi\u015fmesin.<\/p>\n<h2>Yanl\u0131\u015f Kullan\u0131m \u00d6rnekleri ve \u00c7\u00f6z\u00fcmleri<\/h2>\n<p><code>useEffect<\/code>&#8216;i yanl\u0131\u015f kullanman\u0131n en yayg\u0131n nedenlerinden biri, temizleme fonksiyonu yerine ba\u015fka bir de\u011fer d\u00f6nd\u00fcrmektir.  Bu,  &#8220;useEffect must not return anything besides a function&#8221; hatas\u0131na yol a\u00e7ar. A\u015fa\u011f\u0131da yanl\u0131\u015f ve do\u011fru kullan\u0131m \u00f6rneklerini g\u00f6relim:<\/p>\n<h3>Yanl\u0131\u015f Kullan\u0131m:<\/h3>\n<pre><code class=\"language-javascript\">\nuseEffect(() => {\n  const intervalId = setInterval(() => {\n    console.log('Interval \u00e7al\u0131\u015f\u0131yor!');\n  }, 1000);\n  return intervalId; \/\/ Yanl\u0131\u015f! Temizleme fonksiyonu de\u011fil.\n}, []);\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>setInterval<\/code> fonksiyonu her saniye bir mesaj yazd\u0131r\u0131r. Ancak, bile\u015fen kald\u0131r\u0131ld\u0131\u011f\u0131nda bu zamanlay\u0131c\u0131 temizlenmez.  Bu durum, bellekte s\u0131z\u0131nt\u0131lara ve performans sorunlar\u0131na yol a\u00e7abilir.<\/p>\n<h3>Do\u011fru Kullan\u0131m:<\/h3>\n<pre><code class=\"language-javascript\">\nuseEffect(() => {\n  const intervalId = setInterval(() => {\n    console.log('Interval \u00e7al\u0131\u015f\u0131yor!');\n  }, 1000);\n  return () => { \n    clearInterval(intervalId); \/\/ Do\u011fru! Temizleme fonksiyonu.\n  };\n}, []);\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>useEffect<\/code> bir temizleme fonksiyonu d\u00f6nd\u00fcr\u00fcr. Bu fonksiyon, bile\u015fen kald\u0131r\u0131ld\u0131\u011f\u0131nda <code>clearInterval<\/code> ile zamanlay\u0131c\u0131y\u0131 durdurur ve kaynak s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nler.  Sonu\u00e7 olarak, uygulama daha stabil ve performansl\u0131 \u00e7al\u0131\u015f\u0131r.<\/p>\n<h2>Karma\u015f\u0131k Senaryolar ve \u0130leri Seviye Uygulamalar<\/h2>\n<p>Daha karma\u015f\u0131k senaryolarda, birden fazla temizleme i\u015flemi gerekebilir. Bu durumlarda, t\u00fcm temizleme i\u015flemlerini tek bir temizleme fonksiyonunda birle\u015ftirebilirsiniz.  \u00d6rne\u011fin, hem bir zamanlay\u0131c\u0131 hem de bir a\u011f iste\u011fi temizlenmesi gerekiyorsa, temizleme fonksiyonu her ikisini de durdurmal\u0131d\u0131r.<\/p>\n<p>Ayr\u0131ca,  <code>useEffect<\/code>&#8216;i asenkron i\u015flemlerle birlikte kullan\u0131rken dikkatli olmak \u00f6nemlidir.  Asenkron i\u015flemler tamamlanmadan \u00f6nce bile\u015fen kald\u0131r\u0131l\u0131rsa, temizleme fonksiyonu  <code>Promise.reject<\/code> veya  <code>AbortController<\/code> gibi mekanizmalarla iptal edilmelidir. Daha fazla bilgi i\u00e7in <a href=\"https:\/\/fatihsoysal.com\" target=\"_blank\" rel=\"noopener noreferrer\">fatihsoysal.com<\/a> sitesini ziyaret edebilirsiniz.<\/p>\n<p>Sonu\u00e7 olarak, <code>useEffect<\/code> hook&#8217;unu kullan\u0131rken temizleme fonksiyonunun \u00f6nemini asla g\u00f6z ard\u0131 etmeyin. Do\u011fru kullan\u0131m\u0131, uygulaman\u0131z\u0131n sa\u011fl\u0131\u011f\u0131 ve performans\u0131 i\u00e7in son derece \u00f6nemlidir.  Unutmay\u0131n ki, temizleme fonksiyonu, bile\u015feninizin d\u00fczg\u00fcn bir \u015fekilde kald\u0131r\u0131lmas\u0131n\u0131 ve kaynaklar\u0131n etkili bir \u015fekilde y\u00f6netilmesini sa\u011flar.<\/p>\n<p>Umar\u0131m bu makale size <code>useEffect<\/code>&#8216;in do\u011fru kullan\u0131m\u0131n\u0131 anlamada yard\u0131mc\u0131 olmu\u015ftur.  Herhangi bir sorunuz varsa, l\u00fctfen yorumlarda payla\u015fmaktan \u00e7ekinmeyin.  Daha fazla React geli\u015ftirme ipucu ve e\u011fitimleri i\u00e7in <a href=\"https:\/\/dev.to\/clara1123\/useeffect-must-not-return-anything-besides-a-function-which-is-used-for-clean-up-46ii\" target=\"_blank\" rel=\"noopener noreferrer\">buraya<\/a> bakabilirsiniz.<\/p>\n<p>#Etiketler: useEffect, React, temizleme fonksiyonu, yan etkiler, hook, temizlik,  javascript, programlama, web geli\u015ftirme,  React hook&#8217;lar\u0131,  performans, kaynak s\u0131z\u0131nt\u0131s\u0131,  asenkron i\u015flemler<\/p>\n","protected":false},"excerpt":{"rendered":"React&#8217;te useEffect Hook&#8217;unun Temizleme Fonksiyonu: Yanl\u0131\u015f Kullan\u0131mlar ve Do\u011fru Uygulamalar React&#8217;te geli\u015ftirme yaparken s\u0131k\u00e7a kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z useEffect hook&#8217;u, bile\u015fenlerin&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-7633","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&#039;te useEffect Hook&#039;unun Temizleme Fonksiyonu: Yanl\u0131\u015f Kullan\u0131mlar ve Do\u011fru Uygulamalar<\/title>\n<meta name=\"description\" content=\"React&#039;te geli\u015ftirme yaparken s\u0131k\u00e7a kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z useEffect hook&#039;u, bile\u015fenlerin yan etkilerini y\u00f6netmek i\u00e7in g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Ancak, useEffect&#039;in do\u011fru kullan\u0131m\u0131, \u00f6zellikle temizleme fonksiyonunun \u00f6nemi konusunda, yeni ba\u015flayanlar i\u00e7in kafa kar\u0131\u015f\u0131kl\u0131\u011f\u0131 yaratabilir. Bu makalede, &quot;useEffect must not return anything besides a function, which is used for clean-up&quot; hatas\u0131n\u0131n nedenlerini ve do\u011fru kullan\u0131m\u0131n\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"React&#039;te useEffect Hook&#039;unun Temizleme Fonksiyonu: Yanl\u0131\u015f Kullan\u0131mlar ve Do\u011fru Uygulamalar\" \/>\n<meta property=\"og:description\" content=\"React&#039;te geli\u015ftirme yaparken s\u0131k\u00e7a kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z useEffect hook&#039;u, bile\u015fenlerin yan etkilerini y\u00f6netmek i\u00e7in g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. Ancak, useEffect&#039;in do\u011fru kullan\u0131m\u0131, \u00f6zellikle temizleme fonksiyonunun \u00f6nemi konusunda, yeni ba\u015flayanlar i\u00e7in kafa kar\u0131\u015f\u0131kl\u0131\u011f\u0131 yaratabilir. Bu makalede, &quot;useEffect must not return anything besides a function, which is used for clean-up&quot; hatas\u0131n\u0131n nedenlerini ve do\u011fru kullan\u0131m\u0131n\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2024-12-25T08:45:12+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"React&#8217;te useEffect Hook&#8217;unun Temizleme Fonksiyonu: Yanl\u0131\u015f Kullan\u0131mlar ve Do\u011fru Uygulamalar\",\"datePublished\":\"2024-12-25T08:45:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/\"},\"wordCount\":618,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/#respond\"]}],\"copyrightYear\":\"2024\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/reactte-useeffect-hookunun-temizleme-fonksiyonu-yanlis-kullanimlar-ve-dogru-uygulamalar\/\",\"name\":\"React'te useEffect Hook'unun Temizleme Fonksiyonu: Yanl\u0131\u015f Kullan\u0131mlar ve Do\u011fru Uygulamalar\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2024-12-25T08:45:12+00:00\",\"description\":\"React'te geli\u015ftirme yaparken s\u0131k\u00e7a kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z useEffect hook'u, bile\u015fenlerin yan etkilerini y\u00f6netmek i\u00e7in g\u00fc\u00e7l\u00fc bir ara\u00e7t\u0131r. 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