⚙️Ищем баги в коде на JavaScript —[18:19]
Отличие новичка от опытного программиста заключается в том, что первый исправляет ошибки в коде лишь интуитивно, в то время как второй осознанно «ковыряется» в нём.
Именно поэтому автор, на примере небольшого JS-приложения, объясняет, как делать грамотный дебаг кода, причём так, чтобы вам не приходилось полностью его перерывать.
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#видео#javascript#debug
#javascript
PSFree version 1.5.0 includes the Lapse kernel exploit for PS4 firmware 9.00, offering a fast and reliable way to gain deeper system access, though it may cause crashes and is still about 50% stable. It uses a payload loader that can be customized, and the project is open for contributions. This exploit is part of a chain combining webkit and kernel exploits to enable jailbreaking, which allows running custom software on PS4 and potentially PS5. Using PSFree can help you unlock more control over your console, but it requires caution and restarts if errors occur, as it is still in beta. This can benefit users wanting to explore homebrew or custom firmware on supported PS4 versions[1][2][5].
https://github.com/kmeps4/PSFree
#javascript
Open MCT is a tool developed by NASA for visualizing data on computers and mobile devices. It helps analyze and manage data from spacecraft and other systems. The tool is open source, meaning anyone can use and modify it. This makes it useful for many different types of projects that involve collecting and analyzing data. Users can extend Open MCT with plugins to fit their specific needs, making it a flexible and powerful tool for data analysis and management.
https://github.com/nasa/openmct
#javascript
This project helps developers create and manage 3D scenes across multiple browser windows using Three.js and localStorage. It allows for the synchronization of scenes and dynamic window management, making it useful for advanced web graphics. Users benefit by being able to view and interact with the same 3D scene from different windows, which is helpful for collaborative work or complex visualizations. To start, you can clone the repository and open `index.html` in your browser.
https://github.com/bgstaal/multipleWindow3dScene
JavaScriptdainstanceof operatori
JavaScriptda instanceof operatori bu objectni malum bir Sinf yoki Konstruktorninng prototip zanjirida borligini aniqlash uchun ishlatiladi.
obj instanceof Constructor
obj ni Constructor prototip zanjirida bor yo'qligiga qarab true yoki false qaytaradi.
Misollar:
class Person {}
const person1 = new Person()
console.log(person1 instanceof Person); // true
console.log(person1 instanceof Object); // true
const arr = [1, 2, 3]
console.log(arr instanceof Array); // true
console.log(arr instanceof Object); // true
JavaScriptda Arrayning prototipi Objectga borgani uchun bu misolda true qaytaryabdi.
❗️Instanceof faqat object va ularning prototip zanjiridan tekshirganligi uchun, buni Primitivelar bilan ishlatib bo'lmaydi.
✅ TypeScript narrowingda Instanceof dan keng foydalanish mumkin.
#javascript
☑️@valisherbotirov
JavaScriptda o'zining tayyor metodlaridan foydalanish (Reduce methodi).
JavaScript bizga o'zining ko'plab tayyor metodlari taklif qiladi. Ularni ishlatish orqali biz dastur kodimizni soddaroq ko'rinishga olib kelishimiz mumkin. Ulardan biri Arrayning reduce methodi.
Bizga products degan state bo'lib unda mahsulotlarning nomi, narxi va shunga o'xshash malumotlari list ko'rinishida saqlanayotgan bo'lsin. Loyihada o'sha listdagi barcha mahsulotlarning umumiy narxini qaytarish kerak bo'lib qolsa. Uni for loopi va reduce methodi bilan quyidagicha amalga oshirishimiz mumkin.
For orqali:
let prices = 0;
for(let i = 0 ; i < state.products.length ; i++){
prices = prices + state.products[i];
}
Reduce orqali:
let prices = state.products.reduce((acc,product)=> acc + product.price,0)
Ko'rganimizdek Reduce bilan dastur kodi soddaroq ko'rinishga keldi. Lekin shuni ham hisobga olib ketish kerak for loopi reduce qaraganda tez ishlashdi.
#javascript
☑️@valisherbotirov
#javascript
🖥JavaScript dasturlash tilida yozilgan kod qanday natija qaytaradi?
💻@dasturlash_hayoti— dasturchilar va dasturlash hayotini yoritib boradigan loyiha!
#javascript
🖥JavaScript’da yozilgan kod qanday natija beradi?
Javobni keyingi postda tushuntirib beramiz.
💻@dasturlash_hayoti— dasturchilar va dasturlash hayotini yoritib boradigan loyiha!
#javascript
🖥 JavaScript’da yozilgan kod qanday natija beradi?
Javobingizni izohda yozib qoldiring!
💻@dasturlash_hayoti— dasturchilar va dasturlash hayotini yoritib boradigan loyiha!
#javascript
🖥JavaScriptda yozilgan kod natijasi qanday bo’ladi?
Javobingizni izohda yozib qoldiring!
💻@dasturlash_hayoti— dasturchilar va dasturlash hayotini yoritib boradigan loyiha!
#javascript
JavaScript'da yozilgan kod qanday natija beradi?
Javobingizni izohda yozib qoldiring!
💻@dasturlash_hayoti — dasturchilar va dasturlash hayotini yoritib boradigan loyiha!