{"id":8547,"date":"2025-01-04T00:00:20","date_gmt":"2025-01-03T21:00:20","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/is-gorusmesinde-basarili-olmak-icin-10-javascript-sorusu\/"},"modified":"2025-01-04T00:00:20","modified_gmt":"2025-01-03T21:00:20","slug":"is-gorusmesinde-basarili-olmak-icin-10-javascript-sorusu","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/is-gorusmesinde-basarili-olmak-icin-10-javascript-sorusu\/","title":{"rendered":"\u0130\u015f G\u00f6r\u00fc\u015fmesinde Ba\u015far\u0131l\u0131 Olmak \u0130\u00e7in 10 JavaScript Sorusu"},"content":{"rendered":"

<\/p>\n

\u0130\u015f G\u00f6r\u00fc\u015fmesinde Ba\u015far\u0131l\u0131 Olmak \u0130\u00e7in 10 JavaScript Sorusu<\/p>\n

JavaScript geli\u015ftirici pozisyonlar\u0131na ba\u015fvururken, teknik becerilerinizi g\u00f6stermeniz olduk\u00e7a \u00f6nemlidir. Bu y\u00fczden, i\u015f g\u00f6r\u00fc\u015fmelerinde kar\u015f\u0131n\u0131za \u00e7\u0131kabilecek sorular\u0131 \u00f6nceden bilmek ve bunlara haz\u0131rl\u0131kl\u0131 olmak sizi bir ad\u0131m \u00f6ne ta\u015f\u0131yacakt\u0131r. Bu makalede, s\u0131k\u00e7a sorulan 10 JavaScript sorusunu, cevaplar\u0131n\u0131 ve bunlara nas\u0131l haz\u0131rlanabilece\u011finizi detayl\u0131 olarak ele alaca\u011f\u0131z. Ayr\u0131ca, g\u00f6r\u00fc\u015fme s\u00fcrecinde dikkat etmeniz gereken noktalara da de\u011finece\u011fim.<\/p>\n

1. “Closure” Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n

Closure, bir fonksiyonun, fonksiyonun kapsam\u0131 d\u0131\u015f\u0131nda tan\u0131mlanm\u0131\u015f de\u011fi\u015fkenlere eri\u015fimini s\u00fcrd\u00fcrmesidir. Bu, fonksiyonun tan\u0131mland\u0131\u011f\u0131 \u00e7evredeki de\u011fi\u015fkenlerin bellekte kalmas\u0131 anlam\u0131na gelir. \u00d6rne\u011fin:<\/p>\n

\nfunction d\u0131\u015fFonksiyon() {\n  let x = 10;\n  function i\u00e7Fonksiyon() {\n    console.log(x); \n  }\n  return i\u00e7Fonksiyon;\n}\n\nlet fonksiyon = d\u0131\u015fFonksiyon();\nfonksiyon(); \/\/ 10 yazd\u0131r\u0131r.\n<\/code><\/pre>\n
Bu \u00f6rnekte, i\u00e7Fonksiyon<\/code>, d\u0131\u015fFonksiyon<\/code>‘un kapsam\u0131ndaki x<\/code> de\u011fi\u015fkenine eri\u015fir.  Hatta d\u0131\u015fFonksiyon<\/code> \u00e7a\u011fr\u0131ld\u0131ktan sonra bile x<\/code> de\u011fi\u015fkeni bellekte kal\u0131r ve i\u00e7Fonksiyon<\/code> taraf\u0131ndan kullan\u0131labilir.  Bu durum, closure’\u0131 g\u00fc\u00e7l\u00fc ve esnek bir \u00f6zellik yapar, ancak ayn\u0131 zamanda dikkatli kullan\u0131lmas\u0131n\u0131 gerektirir.<\/p>\n
2. “this” Keyword’\u00fc Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n
JavaScript’te “this” keyword’\u00fc, fonksiyonun \u00e7a\u011f\u0131r\u0131m ba\u011flam\u0131n\u0131 g\u00f6sterir.  Bu ba\u011flam, fonksiyonun nas\u0131l \u00e7a\u011fr\u0131ld\u0131\u011f\u0131na ba\u011fl\u0131 olarak de\u011fi\u015fir.  \u00d6rne\u011fin, bir nesne metodu olarak \u00e7a\u011fr\u0131l\u0131rsa, “this” o nesneyi i\u015faret eder.  Global olarak \u00e7a\u011fr\u0131l\u0131rsa, “this” genellikle global nesneyi (browser’da window) i\u015faret eder.  Ancak, “arrow function”larda “this” leksikal ba\u011flama sahiptir ve bulundu\u011fu kapsamdaki “this” de\u011ferini al\u0131r.  Bu konuya hakim olmak, \u00f6zellikle object-oriented programlamada \u00e7ok \u00f6nemlidir.<\/p>\n
3. Prototypal Inheritance Nedir?<\/h2>\n
JavaScript prototypal inheritance’\u0131 kullan\u0131r; bu da nesnelerin \u00f6zelliklerini ve y\u00f6ntemlerini prototiplerinden miras almalar\u0131 anlam\u0131na gelir.  Her nesnenin bir prototipi vard\u0131r ve bu prototip di\u011fer nesnelere \u00f6zelliklerini miras b\u0131rak\u0131r.  Bu, kod tekrar\u0131n\u0131 azalt\u0131r ve daha d\u00fczenli bir kod yap\u0131s\u0131 olu\u015fturur.  Prototypal inheritance’\u0131 anlamak, JavaScript’te nesne y\u00f6nelimli programlama yapmak i\u00e7in olmazsa olmazd\u0131r.<\/p>\n
4.  Promise’ler ve Async\/Await<\/h2>\n
Promise’ler, asenkron i\u015flemlerin sonu\u00e7lar\u0131n\u0131 y\u00f6netmek i\u00e7in kullan\u0131l\u0131r.  Async\/await ise Promise’leri daha senkron bir \u015fekilde y\u00f6netmeyi sa\u011flar, kodun okunabilirli\u011fini art\u0131r\u0131r.  Bu konuda sa\u011flam bir anlay\u0131\u015f, asenkron JavaScript ile \u00e7al\u0131\u015fma konusunda size b\u00fcy\u00fck avantaj sa\u011flayacakt\u0131r.  \u00d6rne\u011fin, bir API \u00e7a\u011fr\u0131s\u0131ndan gelen veriyi i\u015flemek i\u00e7in Promise ve async\/await kullanabilirsiniz.  <\/p>\n
5.  Event Loop Nedir?<\/h2>\n
JavaScript’in tek thread’li olmas\u0131, asenkron i\u015flemlerin nas\u0131l y\u00f6netildi\u011fi sorusunu g\u00fcndeme getirir.  Event loop, bu i\u015flemleri y\u00f6netmek i\u00e7in kullan\u0131lan bir mekanizmad\u0131r.  Callback fonksiyonlar\u0131 ve Promise’ler gibi asenkron i\u015flemler, event loop taraf\u0131ndan s\u0131raya al\u0131n\u0131r ve uygun zamanlarda \u00e7al\u0131\u015ft\u0131r\u0131l\u0131r.  Event loop’un \u00e7al\u0131\u015fma prensibini anlamak, JavaScript’in \u00e7al\u0131\u015fma mant\u0131\u011f\u0131n\u0131 daha iyi kavraman\u0131za yard\u0131mc\u0131 olur. Daha detayl\u0131 bilgi i\u00e7in buraya bakabilirsiniz.<\/a><\/p>\n
6.  DOM Manip\u00fclasyonu<\/h2>\n
DOM (Document Object Model), bir HTML belgesinin temsilini sunar.  DOM manip\u00fclasyonu, JavaScript ile bu temsili de\u011fi\u015ftirerek web sayfas\u0131n\u0131n dinamik olarak g\u00fcncellenmesini sa\u011flar.  Bu, web uygulamalar\u0131n\u0131n interaktif \u00f6zelliklerinin olu\u015fturulmas\u0131nda temel bir konudur.  \u00d6rne\u011fin, kullan\u0131c\u0131 etkile\u015fimlerine g\u00f6re sayfa i\u00e7eri\u011fini de\u011fi\u015ftirmek, DOM manip\u00fclasyonu ile yap\u0131l\u0131r. <\/p>\n
7.  HTTP \u0130stekleri (Fetch API)<\/h2>\n
Modern web uygulamalar\u0131, sunucularla veri al\u0131\u015fveri\u015fi i\u00e7in HTTP istekleri kullan\u0131r.  Fetch API, bu istekleri yapmak i\u00e7in basit ve temiz bir y\u00f6ntem sunar.  Fetch API ile sunucudan veri almak, g\u00fcncellemek veya silmek gibi i\u015flemler yapabilirsiniz.  Bu konuda bilgi sahibi olmak, backend ile etkile\u015fim gerektiren uygulamalar geli\u015ftirmek i\u00e7in gereklidir.<\/p>\n
8.  Error Handling (try…catch)<\/h2>\n
Kodunuzda hatalar\u0131n olu\u015fmas\u0131 ka\u00e7\u0131n\u0131lmazd\u0131r.  Try…catch blo\u011fu, bu hatalar\u0131 yakalamak ve uygulaman\u0131z\u0131n \u00e7\u00f6kmesini engellemek i\u00e7in kullan\u0131l\u0131r.  Hatalar\u0131 d\u00fczg\u00fcn bir \u015fekilde y\u00f6netmek, uygulaman\u0131z\u0131n g\u00fcvenilirli\u011fini ve kullan\u0131c\u0131 deneyimini art\u0131r\u0131r.  Herhangi bir hata durumunda ne yap\u0131lmas\u0131 gerekti\u011fini belirlemek i\u00e7in bu yap\u0131 olduk\u00e7a \u00f6nemlidir.<\/p>\n
9.  Array Metotlar\u0131<\/h2>\n
JavaScript’te array’ler (diziler) ile \u00e7al\u0131\u015fmak i\u00e7in bir\u00e7ok yerle\u015fik metot bulunur.  map<\/code>, filter<\/code>, reduce<\/code> gibi metotlar\u0131 etkin bir \u015fekilde kullanabilmek, kodunuzun temiz ve okunabilir olmas\u0131n\u0131 sa\u011flar.  Bu metotlar ile array i\u015flemlerini daha verimli ve okunabilir bir \u015fekilde ger\u00e7ekle\u015ftirebilirsiniz.   Daha fazla bilgi i\u00e7in Mozilla Developer Network’e bakabilirsiniz.<\/a><\/p>\n
10.  JavaScript Framework’leri Hakk\u0131nda Bilginiz<\/h2>\n
React, Angular, Vue.js gibi pop\u00fcler JavaScript framework’leri hakk\u0131nda bilgi sahibi olmak, i\u015f g\u00f6r\u00fc\u015fmelerinde b\u00fcy\u00fck bir avantaj sa\u011flayabilir.  Bu framework’lerden birini veya birka\u00e7\u0131n\u0131 bilmeniz, deneyiminizi g\u00f6sterir ve i\u015fverenlerin g\u00f6z\u00fcnde sizi daha de\u011ferli k\u0131lar. Hangi framework’\u00fc kulland\u0131\u011f\u0131n\u0131zdan ba\u011f\u0131ms\u0131z olarak, temel prensipleri ve \u00e7al\u0131\u015fma mant\u0131\u011f\u0131n\u0131 anlamak \u00f6nemlidir.  Benim tavsiyem, en az bir tanesini derinlemesine \u00f6\u011frenmenizdir.<\/p>\n
Bu sorulara haz\u0131rl\u0131kl\u0131 olmak, JavaScript geli\u015ftirici pozisyonlar\u0131nda ba\u015far\u0131 \u015fans\u0131n\u0131z\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131racakt\u0131r.  Unutmay\u0131n ki, sadece do\u011fru cevaplar\u0131 bilmek yeterli de\u011fildir; ayn\u0131 zamanda cevaplar\u0131n\u0131z\u0131 a\u00e7\u0131klayabilmeli ve kod \u00f6rnekleriyle destekleyebilmelisiniz.  Ba\u015far\u0131lar!<\/p>\n
Daha fazla yaz\u0131l\u0131m geli\u015ftirme ipucu ve makale i\u00e7in fatihsoysal.com<\/a> adresini ziyaret edebilirsiniz.<\/p>\n
#Etiketler<\/h3>\n
#javascript #i\u015fg\u00f6r\u00fc\u015fmesi #sorular #cevaplar #geli\u015ftirici #yaz\u0131l\u0131m #programlama #teknikm\u00fclakat #kod\u00f6rnekleri #closure #this #prototype #promise #async #await #eventloop #dom #httprequest #fetch #errorhandling #arraymetodlar\u0131 #framework #react #angular #vuejs #FatihSoysal<\/p>\n
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Bu…","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-8547","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\n\u0130\u015f G\u00f6r\u00fc\u015fmesinde Ba\u015far\u0131l\u0131 Olmak \u0130\u00e7in 10 JavaScript Sorusu<\/title>\n<meta name=\"description\" content=\"JavaScript geli\u015ftirici pozisyonlar\u0131na ba\u015fvururken, teknik becerilerinizi g\u00f6stermeniz olduk\u00e7a \u00f6nemlidir. Bu y\u00fczden, i\u015f g\u00f6r\u00fc\u015fmelerinde kar\u015f\u0131n\u0131za \u00e7\u0131kabilecek sorular\u0131 \u00f6nceden bilmek ve bunlara haz\u0131rl\u0131kl\u0131 olmak sizi bir ad\u0131m \u00f6ne ta\u015f\u0131yacakt\u0131r. Bu makalede, s\u0131k\u00e7a sorulan 10 JavaScript sorusunu, cevaplar\u0131n\u0131 ve bunlara nas\u0131l haz\u0131rlanabilece\u011finizi detayl\u0131 olarak ele alaca\u011f\u0131z. Ayr\u0131ca, g\u00f6r\u00fc\u015fme s\u00fcrecinde dikkat etmeniz gereken noktalara da de\u011finece\u011fim.\" \/>\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\/is-gorusmesinde-basarili-olmak-icin-10-javascript-sorusu\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0130\u015f G\u00f6r\u00fc\u015fmesinde Ba\u015far\u0131l\u0131 Olmak \u0130\u00e7in 10 JavaScript Sorusu\" \/>\n<meta property=\"og:description\" content=\"JavaScript geli\u015ftirici pozisyonlar\u0131na ba\u015fvururken, teknik becerilerinizi g\u00f6stermeniz olduk\u00e7a \u00f6nemlidir. Bu y\u00fczden, i\u015f g\u00f6r\u00fc\u015fmelerinde kar\u015f\u0131n\u0131za \u00e7\u0131kabilecek sorular\u0131 \u00f6nceden bilmek ve bunlara haz\u0131rl\u0131kl\u0131 olmak sizi bir ad\u0131m \u00f6ne ta\u015f\u0131yacakt\u0131r. Bu makalede, s\u0131k\u00e7a sorulan 10 JavaScript sorusunu, cevaplar\u0131n\u0131 ve bunlara nas\u0131l haz\u0131rlanabilece\u011finizi detayl\u0131 olarak ele alaca\u011f\u0131z. 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