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Source channel @yxvmcom · Post #21 · Nov 10

#Features 我们打开了一项新的功能,此功能目前处于测试阶段,我们将此功能命名为 AnyLAN,你可以使用它快速的建立内网,并且不消耗你的公网流量。 目前此功能分为2个场景: 1. 同节点内网 2. 不同节点内网(2个节点或以上) 我们这里提供一份简易的教程供大家参考:https://yxvm.com/index.php?rp=/knowledgebase/2/How-to-use-AnyLAN.html 需要开启此功能,你必须购买相应产品(目前免费) LAN (必须同节点持有2个以上VPS才可购买): https://yxvm.com/cart.php?pid=44&promocode=DLCH0P1DN7 AnyLAN(必须俩个或以上节点持有VPS才可购买):https://yxvm.com/cart.php?pid=45&promocode=83YHPHA6QG *LAN 限速500Mbps AnyLAN限速100Mbps

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Valisher Botirov | Development

@valisherbotirov · Post #283 · 08/05/2024, 04:16 PM

JavaScriptda Scope Chain JavaScriptda Scope Chain tushunchasi bu - JavaScript engine ni o'zgaruvchilar va fungsiyalarni scopelar ichidan qidirib topish mexanizmidir. Scope Chain o'zgaruvchi e'lon qilingan scopedan boshlab global scope ga qarab qidirib boradi. Buni yaxshiroq tushunish uchun quyidagi misolni ko'rib o'tamiz. const y = 20; function function1() { const x = 100; const function2 = function () { console.log(x); // x o'zgaruvchisi dastavval function2 ni scopidan qidiriladi topolmagach o'zidan bitta yuqoridagi scopega chiqadi va x ni o'qib oladi x = 100 }; var function3 = function () { console.log(y); // y o'zgaruvchisi dastavval function3 ni scopidan qidiriladi topolmagach o'zidan bitta yuqoridagi function1 ni scopega chiqadi, u yerdan ham topolmagach global scopega chiqadi va y ni tanib oladi y = 20 }; function2(); function3(); } function1(); #javascript#interview_questions ☑️@valisher_botirov

Valisher Botirov | Development

@valisherbotirov · Post #220 · 03/07/2024, 02:12 AM

Immediately invoked function expressions (IIFE) JavaScriptda kod ishga tushgan vaqti e'lon qilingan joyida ishlaydigan fungsiyalarga Immediately invoked function deyiladi. Example: (function(){ console.log("Hello world!") })() //Hello world! ((a,b)=>{ console.log(a + b) })(3,2) //5 #javascript#interview_questions ☑️@valisherbotirov

Valisher Botirov | Development

@valisherbotirov · Post #257 · 05/30/2024, 05:23 PM

Bind() Bind ni call va apply dan farqi funksiyani ishlatilgan joyida chaqirmasdan funksiyani this qiymatini biz berib yuborgan objectga o'zgartirib yangi funksiya yaratib qaytaradi. Uni biror o'zgaruvchiga tenglab olib ishlatishimiz mumkin bo'ladi. function myFunc(){ console.log(this.age) } const obj = { age:21 } const newFunc = myFunc.bind(obj) newFunc() Bind da objectga qo'shib argument berib yuborish call ga o'xshash bo'ladi bind(obj, arg1, arg2, ...) #javascript#docs#interview_questions ☑️@valisherbotirov

Valisher Botirov | Development

@valisherbotirov · Post #256 · 05/30/2024, 05:09 PM

Apply() Apply methodi ham Call() bilan deyarli bir xil ishlaydi. Call() dan farqi funksiyaga argument berib yuborayotgan vaqtimiz argumentlarni array ko'rinishida beramiz. function myFunc(args){ console.log(this.age + " " + args) } const obj = { age:21 } myFunc.apply(obj,["this is argument"]) ``` call(obj, arg1, arg2, ...) apply(obj, [arg1,arg2,...])` #javascript#docs#interview_questions ☑️@valisherbotirov

Valisher Botirov | Development

@valisherbotirov · Post #255 · 05/30/2024, 05:04 PM

JavaScriptda Call() , Apply() va Bind() methodlari. Call() - JavaScriptda funksiyani chaqirish paytida this qiymatini o'zgartirish uchun ishlatiladi. Bu method orqali berib yuborgan objectimizni contextida shu funksiyani chaqirib beradi va funksiya ichida ishlatilgan this ni berib yuborilgan objectimizga tenglashtirib beradi. Misollar orqali ko'ramiz : function myFunc(){ console.log(this) } myFunc() Bizda muFunc degan funksiyamiz bor va bu bizga xozir global Window objectini qaytaradi. Chunki fungsiya global scopeda chaqirilgan. Endi funksiyaga call methodi orqali birorta object berib ko'ramiz. function myFunc(){ console.log(this) } const obj = { age:21 } myFunc.call(obj) Bu holda funksiyamiz bizga obj deb nomlangan objectimizni qaytaradi. Sababi call() methodi funksiyani obj objectini contextida chaqirib beryabdi va natijada funksiyani this qiymati bizning obj nomli objectimizga teng bo'lib qolyabdi. Call() orqali argument berib yuborish Call() bilan funksiyani chaqirgan vaqtimiz objectga qo'shib o'zimizda ixtiyoriy argument ham berib yuborishimiz mumkin. function myFunc(args){ console.log(this.age + " " + args) } const obj = { age:21 } myFunc.call(obj,"this is argument") #javascript#docs#interview_questions ☑️@valisherbotirov

Valisher Botirov | Development

@valisherbotirov · Post #240 · 04/20/2024, 07:14 PM

JavaScript fungsiyalarda this kalit so'zidan foydalanish Fungsiyaning ichida this kalit so'zidan foydalanganimizda this qiymati fungsiya qayerda chaqirilayotganiga bog'liq bo'ladi. Misollar yordamida ko'rib o'tamiz! function showThis (){ console.log(this) } showThis() ushbu misolda this bizga JavaScriptdagi Window objectini qaytaradi. Sababi biz fungsiyani global scope ichida chaqiryabmiz. const person = { name : "Valisher", fetchName:function(){ console.log(this.name) // Valisher } } person.fetchName() bu misolda esa this bizga person objectini qaytaradi. Sababi fetchName fungsiyasi person objectini xossasi bo'lgani uchun fungsiyani chaqirgan vaqtimiz this person objectini qaytaradi. const person = { name : "Valisher", fetchName:function(){ console.log(this.name) } } const getName = person.fetchName const person2 = { name : "John", getName } person2.getName() // John ushbu misolda esa this kalit so'zi person2 objectini qaytaradi. Sababi biz person1 objectidagi fetchName fungiyasini getName o'zgaruvchisiga tenglab olib uni esa person2 objectiga property sifatida beryabmiz. Natijada this bizga person2 objectini qaytarib beryabdi. #javascript#docs#interview_questions ☑️@valisherbotirov

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