{"id":7593,"date":"2024-12-25T01:45:09","date_gmt":"2024-12-24T22:45:09","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/"},"modified":"2024-12-25T01:45:09","modified_gmt":"2024-12-24T22:45:09","slug":"javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/","title":{"rendered":"JavaScript Arrow Fonksiyonlar\u0131nda () => {} ve () => () Aras\u0131ndaki Fark"},"content":{"rendered":"<p>JavaScript Arrow Fonksiyonlar\u0131nda () => {} ve () => () Aras\u0131ndaki Fark<\/p>\n<p>JavaScript&#8217;te arrow fonksiyonlar\u0131 (ok fonksiyonlar\u0131), fonksiyon tan\u0131mlaman\u0131n k\u0131sa ve \u00f6z bir yoludur.  Ancak, iki farkl\u0131 kullan\u0131m bi\u00e7imi vard\u0131r:  <code>() => {}<\/code> ve <code>() => ()<\/code>.  Bu makalede, bu iki yakla\u015f\u0131m aras\u0131ndaki temel farklar\u0131, kullan\u0131m \u00f6rneklerini ve avantajlar\u0131n\u0131 detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z.  Ba\u015flang\u0131\u00e7ta k\u00fc\u00e7\u00fck bir fark gibi g\u00f6r\u00fcnse de,  kod okunabilirli\u011fi ve fonksiyonun davran\u0131\u015f\u0131 a\u00e7\u0131s\u0131ndan \u00f6nemli ayr\u0131m noktalar\u0131 mevcuttur.<\/p>\n<h2>Tek Sat\u0131rl\u0131k \u0130fadeler i\u00e7in () => ()<\/h2>\n<p>E\u011fer arrow fonksiyonunuz tek bir ifade i\u00e7eriyorsa, s\u00fcsl\u00fc parantezleri <code>{}<\/code> kullanmak zorunda de\u011filsiniz.  Bu durumda,  <code>() => ()<\/code>  s\u00f6z dizimini kullanabilirsiniz.  Bu yap\u0131, fonksiyonun tek bir de\u011fer d\u00f6nd\u00fcrd\u00fc\u011f\u00fcn\u00fc a\u00e7\u0131k\u00e7a belirtir.  \u0130\u015fte basit bir \u00f6rnek:<\/p>\n<pre><code class=\"language-javascript\">\nconst kareAl = x => x * x; \nconsole.log(kareAl(5)); \/\/ 25\n<\/code><\/pre>\n<p>Yukar\u0131daki \u00f6rnekte,  <code>kareAl<\/code> fonksiyonu,  giri\u015f de\u011ferinin karesini hesaplar ve do\u011frudan sonucu d\u00f6nd\u00fcr\u00fcr.  S\u00fcsl\u00fc parantez kullan\u0131lmad\u0131\u011f\u0131 i\u00e7in,  <code>return<\/code>  anahtar kelimesi de gerekmemektedir.  Fonksiyon, tek sat\u0131rl\u0131k bir ifade oldu\u011fundan,  bu y\u00f6ntem daha okunakl\u0131 ve  k\u0131sa bir kod yazmam\u0131z\u0131 sa\u011flar.<\/p>\n<h2>\u00c7ok Sat\u0131rl\u0131k \u0130fadeler i\u00e7in () => {}<\/h2>\n<p>Ancak, arrow fonksiyonunuz birden fazla ifade i\u00e7eriyorsa,  s\u00fcsl\u00fc parantezleri <code>{}<\/code> kullanman\u0131z zorunludur.  Bu durumda,  <code>return<\/code> anahtar kelimesi ile d\u00f6nd\u00fcr\u00fclecek de\u011feri a\u00e7\u0131k\u00e7a belirtmeniz gerekir.  A\u015fa\u011f\u0131daki \u00f6rnekte,  iki farkl\u0131 i\u015flem yapan bir arrow fonksiyonu g\u00f6sterilmektedir:<\/p>\n<pre><code class=\"language-javascript\">\nconst toplaVeKareAl = (x, y) => {\n  const toplam = x + y;\n  return toplam * toplam;\n};\nconsole.log(toplaVeKareAl(2, 3)); \/\/ 25\n<\/code><\/pre>\n<p>Bu \u00f6rnekte,  fonksiyon \u00f6nce iki say\u0131y\u0131 topluyor, daha sonra toplam\u0131n karesini alarak sonucu d\u00f6nd\u00fcr\u00fcyor.  Birden fazla sat\u0131r ve i\u015flem i\u00e7erdi\u011fi i\u00e7in, s\u00fcsl\u00fc parantezler ve  <code>return<\/code> anahtar kelimesi kullan\u0131lmas\u0131 zorunludur.  Bu yakla\u015f\u0131m, kodun daha d\u00fczenli ve okunakl\u0131 olmas\u0131n\u0131 sa\u011flar.<\/p>\n<h2>Performans Fark\u0131<\/h2>\n<p>Genellikle, bu iki yakla\u015f\u0131m aras\u0131nda performans fark\u0131 g\u00f6z ard\u0131 edilebilir d\u00fczeydedir. JavaScript motorlar\u0131, bu iki tarz\u0131 olduk\u00e7a optimize bir \u015fekilde \u00e7al\u0131\u015ft\u0131r\u0131r.  Yani,  hangi s\u00f6zdizimini kullanaca\u011f\u0131n\u0131z,  performans kayg\u0131s\u0131yla de\u011fil,  kodun okunabilirli\u011fi ve anla\u015f\u0131l\u0131rl\u0131\u011f\u0131 ile belirlenmelidir.<\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>\u00d6zetle,  <code>() => ()<\/code>  s\u00f6z dizimi, tek sat\u0131rl\u0131k ve tek bir de\u011fer d\u00f6nd\u00fcren arrow fonksiyonlar\u0131 i\u00e7in idealdir.  Okunabilirli\u011fi art\u0131r\u0131r ve kodu daha k\u0131sa tutar.  Ancak,  birden fazla ifade veya i\u015flem i\u00e7eren fonksiyonlar i\u00e7in,  <code>() => {}<\/code> s\u00f6z dizimi ve  <code>return<\/code> anahtar kelimesi kullan\u0131lmal\u0131d\u0131r.  Do\u011fru s\u00f6z dizimini se\u00e7mek,  kodun daha anla\u015f\u0131l\u0131r,  bak\u0131m\u0131 kolay ve daha okunakl\u0131 olmas\u0131n\u0131 sa\u011flar.  Hangi yakla\u015f\u0131m\u0131 kullanaca\u011f\u0131n\u0131z,  fonksiyonunuzun karma\u015f\u0131kl\u0131\u011f\u0131na ve  ihtiyac\u0131n\u0131za ba\u011fl\u0131d\u0131r.<\/p>\n<p>Daha fazla JavaScript \u00f6\u011frenmek i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a>  sitesini ziyaret edebilirsiniz.<\/p>\n<p>Faydal\u0131 bulabilece\u011finiz kaynaklar i\u00e7in  <a href=\"https:\/\/dev.to\/atifwattoo\/difference-between-and-aero-function-in-javascript-js-llb\">buraya<\/a>  t\u0131klayabilirsiniz.<\/p>\n<p>#Etiketler: JavaScript, Arrow Fonksiyonlar\u0131, Ok Fonksiyonlar\u0131, Programlama, Web Geli\u015ftirme, () => {}, () => (),  Fonksiyon Tan\u0131mlama,  Kod Okunabilirli\u011fi, Performans,  return<\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript Arrow Fonksiyonlar\u0131nda () => {} ve () => () Aras\u0131ndaki Fark JavaScript&#8217;te arrow fonksiyonlar\u0131 (ok fonksiyonlar\u0131), fonksiyon&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-7593","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>JavaScript Arrow Fonksiyonlar\u0131nda () =&gt; {} ve () =&gt; () Aras\u0131ndaki Fark<\/title>\n<meta name=\"description\" content=\"JavaScript&#039;te arrow fonksiyonlar\u0131 (ok fonksiyonlar\u0131), fonksiyon tan\u0131mlaman\u0131n k\u0131sa ve \u00f6z bir yoludur. Ancak, iki farkl\u0131 kullan\u0131m bi\u00e7imi vard\u0131r: () =&gt; {} ve () =&gt; (). Bu makalede, bu iki yakla\u015f\u0131m aras\u0131ndaki temel farklar\u0131, kullan\u0131m \u00f6rneklerini ve avantajlar\u0131n\u0131 detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z. Ba\u015flang\u0131\u00e7ta k\u00fc\u00e7\u00fck bir fark gibi g\u00f6r\u00fcnse de, kod okunabilirli\u011fi ve fonksiyonun davran\u0131\u015f\u0131 a\u00e7\u0131s\u0131ndan \u00f6nemli ayr\u0131m noktalar\u0131 mevcuttur.\" \/>\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\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript Arrow Fonksiyonlar\u0131nda () =&gt; {} ve () =&gt; () Aras\u0131ndaki Fark\" \/>\n<meta property=\"og:description\" content=\"JavaScript&#039;te arrow fonksiyonlar\u0131 (ok fonksiyonlar\u0131), fonksiyon tan\u0131mlaman\u0131n k\u0131sa ve \u00f6z bir yoludur. Ancak, iki farkl\u0131 kullan\u0131m bi\u00e7imi vard\u0131r: () =&gt; {} ve () =&gt; (). Bu makalede, bu iki yakla\u015f\u0131m aras\u0131ndaki temel farklar\u0131, kullan\u0131m \u00f6rneklerini ve avantajlar\u0131n\u0131 detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z. 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Ba\u015flang\u0131\u00e7ta k\u00fc\u00e7\u00fck bir fark gibi g\u00f6r\u00fcnse de, kod okunabilirli\u011fi ve fonksiyonun davran\u0131\u015f\u0131 a\u00e7\u0131s\u0131ndan \u00f6nemli ayr\u0131m noktalar\u0131 mevcuttur.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/","og_locale":"tr_TR","og_type":"article","og_title":"JavaScript Arrow Fonksiyonlar\u0131nda () => {} ve () => () Aras\u0131ndaki Fark","og_description":"JavaScript'te arrow fonksiyonlar\u0131 (ok fonksiyonlar\u0131), fonksiyon tan\u0131mlaman\u0131n k\u0131sa ve \u00f6z bir yoludur. Ancak, iki farkl\u0131 kullan\u0131m bi\u00e7imi vard\u0131r: () => {} ve () => (). 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Ba\u015flang\u0131\u00e7ta k\u00fc\u00e7\u00fck bir fark gibi g\u00f6r\u00fcnse de, kod okunabilirli\u011fi ve fonksiyonun davran\u0131\u015f\u0131 a\u00e7\u0131s\u0131ndan \u00f6nemli ayr\u0131m noktalar\u0131 mevcuttur.","og_url":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/","og_site_name":"Kodlar\u0131n Gizemli D\u00fcnyas\u0131","article_published_time":"2024-12-24T22:45:09+00:00","author":"Fatih Soysal","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"Fatih Soysal","Tahmini okuma s\u00fcresi":"2 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/#article","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/"},"author":{"name":"Fatih Soysal","@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"headline":"JavaScript Arrow Fonksiyonlar\u0131nda () => {} ve () => () Aras\u0131ndaki Fark","datePublished":"2024-12-24T22:45:09+00:00","mainEntityOfPage":{"@id":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/"},"wordCount":478,"commentCount":0,"publisher":{"@id":"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1"},"inLanguage":"tr","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/#respond"]}],"copyrightYear":"2024","copyrightHolder":{"@id":"https:\/\/fatihsoysal.com\/blog\/#organization"}},{"@type":"WebPage","@id":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/","url":"https:\/\/fatihsoysal.com\/blog\/javascript-arrow-fonksiyonlarinda-ve-arasindaki-fark\/","name":"JavaScript Arrow Fonksiyonlar\u0131nda () => {} ve () => () Aras\u0131ndaki Fark","isPartOf":{"@id":"https:\/\/fatihsoysal.com\/blog\/#website"},"datePublished":"2024-12-24T22:45:09+00:00","description":"JavaScript'te arrow fonksiyonlar\u0131 (ok fonksiyonlar\u0131), fonksiyon tan\u0131mlaman\u0131n k\u0131sa ve \u00f6z bir yoludur. 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