{"id":156,"date":"2024-05-15T04:27:52","date_gmt":"2024-05-15T01:27:52","guid":{"rendered":"https:\/\/www.dchost.com\/blog\/?p=156"},"modified":"2026-11-04T00:31:05","modified_gmt":"2026-11-03T21:31:05","slug":"javascript-nedir","status":"publish","type":"post","link":"https:\/\/www.dchost.com\/blog\/javascript-nedir\/","title":{"rendered":"JavaScript Nedir?"},"content":{"rendered":"<div class=\"dchost-blog-content-wrapper\"><div id=\"toc_container\" role=\"navigation\" aria-label=\"Table of Contents\" data-nosnippet class=\"toc_transparent no_bullets toc_numbered toc_title_center\"><p class=\"toc_title\">\u0130\u00e7indekiler<\/p><ul class=\"toc_list\"><li><a href=\"#Giris\"><span class=\"toc_number toc_depth_1\">1.<\/span> Giri\u015f<\/a><\/li><li><a href=\"#JavaScript8217in_Temel_Ozellikleri\"><span class=\"toc_number toc_depth_1\">2.<\/span> JavaScript&#8217;in Temel \u00d6zellikleri<\/a><ul><li><a href=\"#Dinamik_ve_Etkilesimli\"><span class=\"toc_number toc_depth_2\">2.1.<\/span> Dinamik ve Etkile\u015fimli<\/a><\/li><li><a href=\"#Capraz_Platform_Destegi\"><span class=\"toc_number toc_depth_2\">2.2.<\/span> \u00c7apraz Platform Deste\u011fi<\/a><\/li><li><a href=\"#Nesne_Yonelimli\"><span class=\"toc_number toc_depth_2\">2.3.<\/span> Nesne Y\u00f6nelimli<\/a><\/li><li><a href=\"#Esnek_ve_Zengin_Ekosistem\"><span class=\"toc_number toc_depth_2\">2.4.<\/span> Esnek ve Zengin Ekosistem<\/a><\/li><\/ul><\/li><li><a href=\"#JavaScript8217in_Kullanim_Alanlari\"><span class=\"toc_number toc_depth_1\">3.<\/span> JavaScript&#8217;in Kullan\u0131m Alanlar\u0131<\/a><ul><li><a href=\"#Web_Gelistirme\"><span class=\"toc_number toc_depth_2\">3.1.<\/span> Web Geli\u015ftirme<\/a><\/li><li><a href=\"#Sunucu_Tarafli_Programlama\"><span class=\"toc_number toc_depth_2\">3.2.<\/span> Sunucu Tarafl\u0131 Programlama<\/a><\/li><li><a href=\"#Mobil_Uygulama_Gelistirme\"><span class=\"toc_number toc_depth_2\">3.3.<\/span> Mobil Uygulama Geli\u015ftirme<\/a><\/li><li><a href=\"#Oyun_Gelistirme\"><span class=\"toc_number toc_depth_2\">3.4.<\/span> Oyun Geli\u015ftirme<\/a><\/li><\/ul><\/li><li><a href=\"#JavaScript8217in_Avantajlari\"><span class=\"toc_number toc_depth_1\">4.<\/span> JavaScript&#8217;in Avantajlar\u0131<\/a><ul><li><a href=\"#Ogrenme_Kolayligi\"><span class=\"toc_number toc_depth_2\">4.1.<\/span> \u00d6\u011frenme Kolayl\u0131\u011f\u0131<\/a><\/li><li><a href=\"#Hiz_ve_Performans\"><span class=\"toc_number toc_depth_2\">4.2.<\/span> H\u0131z ve Performans<\/a><\/li><li><a href=\"#Genis_Topluluk_Destegi\"><span class=\"toc_number toc_depth_2\">4.3.<\/span> Geni\u015f Topluluk Deste\u011fi<\/a><\/li><li><a href=\"#Esneklik_ve_Olceklenebilirlik\"><span class=\"toc_number toc_depth_2\">4.4.<\/span> Esneklik ve \u00d6l\u00e7eklenebilirlik<\/a><\/li><\/ul><\/li><li><a href=\"#Sonuc\"><span class=\"toc_number toc_depth_1\">5.<\/span> Sonu\u00e7<\/a><\/li><\/ul><\/div>\n<h2><span id=\"Giris\">Giri\u015f<\/span><\/h2>\n<p>JavaScript, 1995 y\u0131l\u0131nda Netscape taraf\u0131ndan geli\u015ftirilen ve web sayfalar\u0131na dinamik ve etkile\u015fimli \u00f6zellikler eklemek i\u00e7in kullan\u0131lan y\u00fcksek seviyeli bir programlama dilidir. G\u00fcn\u00fcm\u00fczde JavaScript, web geli\u015ftirme d\u00fcnyas\u0131nda vazge\u00e7ilmez bir konumda olup, hem istemci taraf\u0131nda (client-side) hem de sunucu taraf\u0131nda (server-side) kullan\u0131lan \u00e7ok y\u00f6nl\u00fc bir dil haline gelmi\u015ftir.<\/p>\n<h2><span id=\"JavaScript8217in_Temel_Ozellikleri\">JavaScript&#8217;in Temel \u00d6zellikleri<\/span><\/h2>\n<h3><span id=\"Dinamik_ve_Etkilesimli\">Dinamik ve Etkile\u015fimli<\/span><\/h3>\n<p>JavaScript, web sayfalar\u0131n\u0131n i\u00e7eri\u011fini ve davran\u0131\u015f\u0131n\u0131 kullan\u0131c\u0131 etkile\u015fimlerine g\u00f6re de\u011fi\u015ftirmek i\u00e7in kullan\u0131l\u0131r. Form alanlar\u0131n\u0131 kontrol etme, bir d\u00fc\u011fmeye bas\u0131ld\u0131\u011f\u0131nda i\u00e7eri\u011fi g\u00fcncelleme, animasyonlar ve oyunlar buna \u00f6rnektir. Bu i\u015flevler, eri\u015filebilirlik ve performans g\u00f6zetilerek tasarland\u0131\u011f\u0131nda kullan\u0131c\u0131 deneyimini iyile\u015ftirebilir.<\/p>\n<h3><span id=\"Capraz_Platform_Destegi\">\u00c7apraz Platform Deste\u011fi<\/span><\/h3>\n<p>JavaScript, modern web taray\u0131c\u0131lar\u0131nda ve farkl\u0131 i\u015fletim sistemlerindeki \u00e7al\u0131\u015fma ortamlar\u0131nda kullan\u0131labilir. Ancak dil \u00f6zelliklerinin ve Web API&#8217;lerinin deste\u011fi taray\u0131c\u0131ya ve s\u00fcr\u00fcme g\u00f6re de\u011fi\u015febilir. Ortak bir kod taban\u0131 bir\u00e7ok cihazda kullan\u0131labilse de hedef taray\u0131c\u0131larda test yapmak, gerekti\u011finde uyumluluk \u00e7\u00f6z\u00fcmleri kullanmak gerekir. Taray\u0131c\u0131ya \u00f6zg\u00fc API&#8217;ler de Node.js gibi ortamlarda do\u011frudan bulunmayabilir.<\/p>\n<h3><span id=\"Nesne_Yonelimli\">Nesne Y\u00f6nelimli<\/span><\/h3>\n<p>JavaScript, prototip tabanl\u0131 nesne y\u00f6nelimli programlamay\u0131 (OOP) destekler. S\u0131n\u0131f (class) s\u00f6zdizimi de bu prototip modeli \u00fczerinde \u00e7al\u0131\u015f\u0131r. Nesneler ve s\u0131n\u0131flar, uygun tasarland\u0131\u011f\u0131nda kodu mod\u00fcler ve yeniden kullan\u0131labilir bi\u00e7imde d\u00fczenlemeye yard\u0131mc\u0131 olur. JavaScript ayr\u0131ca i\u015flevsel ve prosed\u00fcrel programlama yakla\u015f\u0131mlar\u0131yla da kullan\u0131labilir.<\/p>\n<h3><span id=\"Esnek_ve_Zengin_Ekosistem\">Esnek ve Zengin Ekosistem<\/span><\/h3>\n<p>JavaScript, geni\u015f bir k\u00fct\u00fcphane ve \u00e7er\u00e7eve (framework) ekosistemine sahiptir. React bir kullan\u0131c\u0131 aray\u00fcz\u00fc k\u00fct\u00fcphanesidir; Angular ve Vue.js ise aray\u00fcz geli\u015ftirmede kullan\u0131lan \u00e7er\u00e7evelerdir. Bu ara\u00e7lar, bile\u015fen tabanl\u0131 modern web uygulamalar\u0131 olu\u015fturmay\u0131 kolayla\u015ft\u0131rabilir. Node.js ise bir aray\u00fcz \u00e7er\u00e7evesi de\u011fil, JavaScript&#8217;i taray\u0131c\u0131 d\u0131\u015f\u0131nda, \u00f6rne\u011fin sunucuda \u00e7al\u0131\u015ft\u0131ran bir \u00e7al\u0131\u015fma ortam\u0131d\u0131r.<\/p>\n<h2><span id=\"JavaScript8217in_Kullanim_Alanlari\">JavaScript&#8217;in Kullan\u0131m Alanlar\u0131<\/span><\/h2>\n<h3><span id=\"Web_Gelistirme\">Web Geli\u015ftirme<\/span><\/h3>\n<p>JavaScript, web geli\u015ftirmede yayg\u0131n olarak kullan\u0131lan bir dildir. HTML sayfan\u0131n yap\u0131s\u0131n\u0131, CSS g\u00f6r\u00fcn\u00fcm\u00fcn\u00fc tan\u0131mlarken JavaScript etkile\u015fimli davran\u0131\u015flar ekler. Taray\u0131c\u0131da DOM arac\u0131l\u0131\u011f\u0131yla sayfa i\u00e7eri\u011fini g\u00fcncelleyebilir, kullan\u0131c\u0131 olaylar\u0131n\u0131 i\u015fleyebilir ve sunucudan veri alarak sayfan\u0131n tamam\u0131n\u0131 yeniden y\u00fcklemeden i\u00e7erik g\u00f6sterebilir.<\/p>\n<h3><span id=\"Sunucu_Tarafli_Programlama\">Sunucu Tarafl\u0131 Programlama<\/span><\/h3>\n<p>Node.js, JavaScript ile sunucu taraf\u0131nda HTTP hizmetleri, API&#8217;ler ve veritaban\u0131yla ileti\u015fim kuran uygulamalar geli\u015ftirmeye olanak tan\u0131r. Olay d\u00f6ng\u00fcs\u00fc ve engellemeyen giri\u015f\/\u00e7\u0131k\u0131\u015f modeli, \u00e7ok say\u0131da a\u011f veya dosya i\u015flemi bekleyen uygulamalarda yararl\u0131 olabilir. Ancak uzun s\u00fcren, i\u015flemci yo\u011fun i\u015fler olay d\u00f6ng\u00fcs\u00fcn\u00fc engelleyebilir; bu i\u015fler i\u00e7in i\u015f\u00e7i i\u015f par\u00e7ac\u0131klar\u0131 veya ayr\u0131 s\u00fcre\u00e7ler gerekebilir. JavaScript&#8217;in hem taray\u0131c\u0131da hem sunucuda kullan\u0131labilmesi, tam y\u0131\u011f\u0131n (full-stack) geli\u015ftirmeyi m\u00fcmk\u00fcn k\u0131lar.<\/p>\n<h3><span id=\"Mobil_Uygulama_Gelistirme\">Mobil Uygulama Geli\u015ftirme<\/span><\/h3>\n<p>React Native ve Ionic gibi \u00e7er\u00e7eveler sayesinde JavaScript ile mobil uygulamalar geli\u015ftirmek m\u00fcmk\u00fcnd\u00fcr. React Native yerel aray\u00fcz bile\u015fenlerini kullan\u0131rken Ionic web teknolojilerine dayal\u0131 aray\u00fczler sunar ve Capacitor gibi ara\u00e7larla mobil uygulama olarak paketlenebilir. Kodun \u00f6nemli bir b\u00f6l\u00fcm\u00fc iOS ve Android aras\u0131nda payla\u015f\u0131labilir; yine de platforma \u00f6zg\u00fc kod, yap\u0131land\u0131rma ve test gerekebilir.<\/p>\n<h3><span id=\"Oyun_Gelistirme\">Oyun Geli\u015ftirme<\/span><\/h3>\n<p>JavaScript, taray\u0131c\u0131 tabanl\u0131 oyun geli\u015ftirmede de kullan\u0131l\u0131r. HTML&#8217;nin canvas \u00f6\u011fesi, Canvas API ve WebGL gibi teknolojiler grafiklerin taray\u0131c\u0131da \u00e7izilmesine olanak tan\u0131r. Phaser, 2D oyun geli\u015ftirmeye y\u00f6nelik bir \u00e7er\u00e7evedir. Three.js ise 3D grafikler olu\u015fturmay\u0131 kolayla\u015ft\u0131ran bir k\u00fct\u00fcphanedir; tek ba\u015f\u0131na tam bir oyun motoru de\u011fildir, ancak oyun projelerinde kullan\u0131labilir.<\/p>\n<h2><span id=\"JavaScript8217in_Avantajlari\">JavaScript&#8217;in Avantajlar\u0131<\/span><\/h2>\n<h3><span id=\"Ogrenme_Kolayligi\">\u00d6\u011frenme Kolayl\u0131\u011f\u0131<\/span><\/h3>\n<p>JavaScript ile ba\u015flang\u0131\u00e7 d\u00fczeyinde denemeler yapmak i\u00e7in modern bir taray\u0131c\u0131n\u0131n geli\u015ftirici konsolu yeterlidir. Geni\u015f dok\u00fcmantasyon ve topluluk kaynaklar\u0131 da \u00f6\u011frenmeyi destekler. Ancak \u00f6\u011frenme kolayl\u0131\u011f\u0131 ki\u015finin deneyimine ba\u011fl\u0131d\u0131r; t\u00fcr d\u00f6n\u00fc\u015f\u00fcmleri, kapsam kurallar\u0131 ve asenkron programlama gibi konular ayr\u0131ca \u00e7al\u0131\u015fma gerektirir.<\/p>\n<h3><span id=\"Hiz_ve_Performans\">H\u0131z ve Performans<\/span><\/h3>\n<p>JavaScript&#8217;in h\u0131z\u0131, yaln\u0131zca yorumlanarak \u00e7al\u0131\u015fmas\u0131yla a\u00e7\u0131klanamaz. Modern JavaScript motorlar\u0131, yorumlama ve \u00e7al\u0131\u015fma s\u0131ras\u0131nda derleme (JIT) gibi tekniklerle kodu optimize edebilir. Ger\u00e7ek performans; algoritmalara, i\u015f y\u00fck\u00fcne, cihaza ve \u00e7al\u0131\u015fma ortam\u0131na ba\u011fl\u0131d\u0131r. Taray\u0131c\u0131n\u0131n ana i\u015f par\u00e7ac\u0131\u011f\u0131nda uzun s\u00fcren i\u015flemler kullan\u0131c\u0131 etkile\u015fimlerini geciktirebilir; uygun i\u015fleri Web Worker&#8217;a ta\u015f\u0131mak veya k\u00fc\u00e7\u00fck par\u00e7alara b\u00f6lmek aray\u00fcz\u00fcn yan\u0131t verebilirli\u011fini korumaya yard\u0131mc\u0131 olabilir.<\/p>\n<h3><span id=\"Genis_Topluluk_Destegi\">Geni\u015f Topluluk Deste\u011fi<\/span><\/h3>\n<p>JavaScript, d\u00fcnya \u00e7ap\u0131nda geni\u015f bir geli\u015ftirici toplulu\u011funa sahiptir. Bu topluluk, s\u00fcrekli olarak yeni k\u00fct\u00fcphaneler, ara\u00e7lar ve kaynaklar geli\u015ftirir. Ayr\u0131ca, \u00e7evrimi\u00e7i forumlar, bloglar ve sosyal medya platformlar\u0131 arac\u0131l\u0131\u011f\u0131yla geli\u015ftiriciler aras\u0131ndaki bilgi payla\u015f\u0131m\u0131 te\u015fvik edilir. Bu destek a\u011f\u0131, JavaScript ile \u00e7al\u0131\u015f\u0131rken kar\u015f\u0131la\u015f\u0131lan sorunlar\u0131n h\u0131zl\u0131 bir \u015fekilde \u00e7\u00f6z\u00fclmesine yard\u0131mc\u0131 olur.<\/p>\n<h3><span id=\"Esneklik_ve_Olceklenebilirlik\">Esneklik ve \u00d6l\u00e7eklenebilirlik<\/span><\/h3>\n<p>JavaScript, k\u00fc\u00e7\u00fck projelerden b\u00fcy\u00fck uygulamalara kadar farkl\u0131 \u00f6l\u00e7eklerde kullan\u0131labilir. Mod\u00fcler kod yap\u0131s\u0131 ve ihtiyaca uygun ara\u00e7 se\u00e7imi, projelerin geli\u015ftirilmesini ve bak\u0131m\u0131n\u0131 kolayla\u015ft\u0131rabilir. Ancak y\u00fcksek trafi\u011fi kar\u015f\u0131layabilmek yaln\u0131zca dil se\u00e7imine ba\u011fl\u0131 de\u011fildir; uygulama mimarisi, veritaban\u0131 tasar\u0131m\u0131, \u00f6nbellekleme ve sunucu kaynaklar\u0131 da belirleyicidir. Kapasite ve darbo\u011fazlar, uygulamaya \u00f6zg\u00fc y\u00fck testleriyle de\u011ferlendirilmelidir.<\/p>\n<h2><span id=\"Sonuc\">Sonu\u00e7<\/span><\/h2>\n<p>JavaScript, HTML ve CSS ile birlikte etkile\u015fimli web aray\u00fczleri geli\u015ftirmek i\u00e7in kullan\u0131lan temel teknolojilerden biridir. Node.js ile sunucuda, React Native ve Ionic gibi ara\u00e7larla mobil uygulamalarda da kullan\u0131labilir. Bir projede JavaScript ve ekosisteminden yararlan\u0131rken hedef platformu, uyumluluk gereksinimlerini ve i\u015f y\u00fck\u00fcn\u00fc de\u011ferlendirmek, yaln\u0131zca dilin pop\u00fclerli\u011fine g\u00f6re se\u00e7im yapmaktan daha yararl\u0131d\u0131r.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>JavaScript, web sayfalar\u0131na etkile\u015fim eklemenin yan\u0131 s\u0131ra sunucu ve mobil uygulama geli\u015ftirmede de kullan\u0131l\u0131r. Dilin temel \u00f6zelliklerini, ekosistemini ve performans\u0131 etkileyen noktalar\u0131 ke\u015ffedin.<\/p>\n","protected":false},"author":1,"featured_media":6115,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,1,26],"tags":[46,43,48,47,42],"class_list":["post-156","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nedir","category-genel","category-teknoloji","tag-javascript","tag-programlama","tag-programming","tag-webdevelopment","tag-yazilim"],"_links":{"self":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/156","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/comments?post=156"}],"version-history":[{"count":8,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/156\/revisions"}],"predecessor-version":[{"id":6117,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/156\/revisions\/6117"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media\/6115"}],"wp:attachment":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media?parent=156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/categories?post=156"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/tags?post=156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}