javascript-tutorial · 10xStartuper · Jul 18, 2021
diff --git a/1-js/01-getting-started/1-intro/article.md b/1-js/01-getting-started/1-intro/article.md
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 # JavaScript-ga kirish
 
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 Keling, JavaScript-da nima muhimligini, u bilan nimaga erisha olishimizni va qanday boshqa texnologiyalar bilan ushbu til yaxshi qo'llanilishini ko'rib chiqaylik.
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-Let's see what's so special about JavaScript, what we can achieve with it, and what other technologies play well with it.
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 ## JavaScript bu nima?
 
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 *JavaScript* dastlab *"veb-sahifalarni jonlantirish"* uchun yaratilgan edi.
 
 Ushbu tilda dasturlar *skript* deb nomlanadi. Ular veb-sahifani HTML-da yozilishi mumkin va sahifa brauzer tomonidan yuklanganidan keyin ular avtomatik ravishda amalga oshiriladi.
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-*JavaScript* was initially created to "make web pages alive".
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-The programs in this language are called *scripts*. They can be written right in a web page's HTML and run automatically as the page loads.
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 Skriptlar oddiy matn sifatida taqdim etiladi va amalga oshiriladi. Ularni ishga tushirish uchun maxsus tayyorgarlik yoki kompilatsiya kerak emas.
 
 Shu jihatdan, JavaScript [Java] (https://en.wikipedia.org/wiki/Java_(programming_language)) tilidan juda farq qiladi.
 
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 ```smart header="Nega <u>Java</u>Script?"
 JavaScript yaratilganda, u dastlab "LiveScript" nomi bilan taqdim etilgan edi. Ammo Java o'sha paytlarda juda mashhur edi, shuning uchun Java tilining "ukasi" sifatida yangi tilni taqdim etish g'oyasi JS mashhur bo'lishga yordam beradi deb hisoblangan .
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-```smart header="Why is it called <u>Java</u>Script?"
-When JavaScript was created, it initially had another name: "LiveScript". But Java was very popular at that time, so it was decided that positioning a new language as a "younger brother" of Java would help.
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 Ammo, rivojlanish jarayonida, JavaScript [ECMAScript] (http://en.wikipedia.org/wiki/ECMAScript) deb ataladigan o'z xususiyatiga ega to'liq mustaqil tilga aylangan va hozirda Java tiliga hech qanday aloqasi yo'q.
 ```
@@ -39,15 +27,10 @@ Brauzerlar o'z JavaScript interpretatorlariga ega, ular gohida "JavaScript virtu
 
 Har bir intetptretatorni o'z nomi mavjud. Masalan:
 
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 - [V8](https://en.wikipedia.org/wiki/V8_(JavaScript_engine)) -- Chrome va Opera brauzerlarida qo'llanadi.
 - [SpiderMonkey](https://en.wikipedia.org/wiki/SpiderMonkey) -- Firefox brauzerida.
 - ...net Explorer brauerning turli xil versiyalari uchun "Trident" va "Chakra", Microsoft Edge uchun "ChakraCore", Safari uchun "Nitro" va "SquirrelFish" va boshqalar kabi boshqa kod nomlari mavjud.
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-- [V8](https://en.wikipedia.org/wiki/V8_(JavaScript_engine)) -- in Chrome and Opera.
-- [SpiderMonkey](https://en.wikipedia.org/wiki/SpiderMonkey) -- in Firefox.
-- ...There are other codenames like "Chakra" for IE, "JavaScriptCore", "Nitro" and "SquirrelFish" for Safari, etc.
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 Yuqoridagi atamalarni eslab qolish yaxshi, chunki ular netdagi ishlab chiquvchilar maqolalarida qo'llaniladi. Biz ulardan ham foydalanamiz. Masalan, agar "X funktsiyasini V8 qo'llab-quvvatlasa", ehtimol u Chrome va Opera-da ishlaydi.
 
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 2. Keyin u skriptni mashina tiliga o'zgartiradi ("kompilyatsiya qiladi").
 3. Va keyin mashina kodi juda tez ishlaydi.
 
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 Interpretatatsiya jarayonning har bir bosqichida optimallashtirishlarni qo'llaydi. U hattoki kompilyatsiya qilingan skriptni ishlayotganda kuzatib boradi, u orqali oqib o'tadigan ma'lumotlarni tahlil qiladi va shu bilimga asoslangan holda mashina kodiga optimallashtirishlarni qo'llaydi. Tugatgandan so'ng, skriptlar juda tez ishlaydi.
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-The engine applies optimizations at each step of the process. It even watches the compiled script as it runs, analyzes the data that flows through it, and further optimizes the machine code based on that knowledge.
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 ## Brauzerdagi JavaScript nimani bajara oladi?
 
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 Bunday cheklovlarga quyidagilar kiradi:
 
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 - Veb-sahifadagi JavaScript-ni qattiq diskdagi o'zboshimchalik bilan fayllarni o'qish / yozish, ularni nusxalash yoki dasturlarni bajarish mumkin emas. Uning OS tizimi funktsiyalariga to'g'ridan-to'g'ri kirish imkoniyati yo'q.
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-- JavaScript on a webpage may not read/write arbitrary files on the hard disk, copy them or execute programs. It has no direct access to OS functions.
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     Zamonaviy brauzerlar unga fayllar bilan ishlashga imkon beradi, lekin kirish cheklangan va faqat foydalanuvchi brauzer oynasiga faylni "tushirish" yoki uni `<input>` yorlig'i orqali tanlash kabi ba'zi bir amallarni bajargan taqdirdagina taqdim etiladi.
 
     Kamera / mikrofon va boshqa qurilmalar bilan o'zaro aloqa qilish usullari mavjud, ammo ular foydalanuvchidan aniq ruxsat talab qiladi. Shunday qilib, JavaScript-ni qo'llab-quvvatlaydigan sahifa veb-kamerani yashirincha yoqmasligi, atrofni kuzatishi va ma'lumotni[NSA](https://en.wikipedia.org/wiki/National_Security_Agency) ga yuborishi mumkin emas.
 - Turli xil yorliqlar / oynalar odatda bir-birlarini bilishmaydi. Ba'zan ular bilishadi, masalan, bitta oyna ikkinchisini ochish uchun JavaScript-ni ishlatganda. Ammo bu holatda ham bitta sahifadagi JavaScript-ni boshqa saytlarga kirish mumkin emas, agar ular turli saytlardan (boshqa domendan, protokoldan yoki portdan) bo'lsa.
 
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     Bu "Xuddi shu manba siyosati"(Same origin policy) deyiladi. Buning uchun *ikkala sahifa* ma'lumotlar almashinuvi to'g'risida kelishib olishlari va uni boshqaradigan maxsus JavaScript kodini o'z ichiga olishi kerak. Biz buni o'quv qo'llanmasida ko'rib chiqamiz.
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-    This is called the "Same Origin Policy". To work around that, *both pages* must agree for data exchange and contain a special JavaScript code that handles it. We'll cover that in the tutorial.
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     Ushbu cheklov, yana foydalanuvchi xavfsizligi uchun. Foydalanuvchi ochgan sahifa `http://anysite.com` URL manzili bo'lgan boshqa brauzer yorlig'iga kira olmasligi kerak `http://gmail.com` va u erdan ma'lumotlarni o'g'irlash.
 
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 Bu JavaScript-ni noyob qiladi. Shuning uchun u brauzer feyslarini yaratishda eng keng tarqalgan vositadir.
 
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 Yangi texnologiyani o'rganishni rejalashtirayotib, uning istiqbollarini tekshirish ham muhimdir. Keling, zamonaviy tendentsiyalarga o'taylik.
 
 ## JavaScript "ustidan" qo'llanadigan tillar
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-That said, JavaScript also allows to create servers, mobile applications, etc.
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 JavaScript-ning sintaksisi hammaning ehtiyojlariga mos kelmaydi. Turli odamlar turli xususiyatlarni xohlashadi.
 
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 - [TypeScript] (http://www.typescriptlang.org/) murakkab tizimlarni ishlab chiqish, soddalashtirish va qo'llab-quvvatlash uchun "strict data typing"ni qo'shishga qaratilgan. Microsoft tomonidan ishlab chiqilgan.
 - [Dart] (https://www.dartlang.org/) brauzer bo'lmagan muhitda (mobil ilovalar kabi) ishlaydigan o'z dvigateliga ega bo'lgan mustaqil til. Bu dastlab JavaScript uchun zaxira sifatida Google tomonidan taklif etildi, lekin hozirgi paytda, brauzerlar shu tilni ham JS-ga transpilatsiya bo'lishini talab qilishadi.
 
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 Bundan ham ko'proq tillar mavjud. Albatta, biz bu tillardan birini ishlatsak ham, biz nima qilayotganimizni tushunish uchun JavaScript-ni bilishimiz kerak.
 
 ## Xulosa
 
 - JavaScript dastlab brauzer tili sifatida yaratilgan, ammo hozirgi paytda ko'pgina boshqa muhitlarda ham qo'llanilmoqda.
 - Bugun JavaScript HTML/CSS bilan to'la integratsiyalashgan va eng keng tarqalgan brauzer tili hisoblanadi.
 - JavaScript-ga "aylanadigan" va muayyan xususiyatlarni taqdim etadigan ko'plab tillar mavjud. Javascriptni o'zlashtirgandan so'ng kamida qisqacha ularga bir nazar tashlash tavsiya etiladi.
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-- [CoffeeScript](http://coffeescript.org/) is a "syntactic sugar" for JavaScript. It introduces shorter syntax, allowing us to write clearer and more precise code. Usually, Ruby devs like it.
-- [TypeScript](http://www.typescriptlang.org/) is concentrated on adding "strict data typing" to simplify the development and support of complex systems. It is developed by Microsoft.
-- [Flow](http://flow.org/) also adds data typing, but in a different way. Developed by Facebook.
-- [Dart](https://www.dartlang.org/) is a standalone language that has its own engine that runs in non-browser environments (like mobile apps), but also can be transpiled to JavaScript. Developed by Google.
-- [Brython](https://brython.info/) is a Python transpiler to JavaScript that enables the writing of applications in pure Python without JavaScript.
-- [Kotlin](https://kotlinlang.org/docs/reference/js-overview.html) is a modern, concise and safe programming language that can target the browser or Node.
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-There are more. Of course, even if we use one of transpiled languages, we should also know JavaScript to really understand what we're doing.
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-## Summary
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-- JavaScript was initially created as a browser-only language, but it is now used in many other environments as well.
-- Today, JavaScript has a unique position as the most widely-adopted browser language with full integration in HTML/CSS.
-- There are many languages that get "transpiled" to JavaScript and provide certain features. It is recommended to take a look at them, at least briefly, after mastering JavaScript.
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