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πŸ‘©β€πŸ’» Π§Ρ‚ΠΎ Ρ‚Π°ΠΊΠΎΠ΅ ΠΌΠ΅Ρ‚ΠΎΠ΄ map() Π² JavaScript ΠΈ ΠΊΠ°ΠΊ ΠΎΠ½ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ?

map() β€” это ΠΌΠ΅Ρ‚ΠΎΠ΄ массивов Π² JavaScript, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ создаёт Π½ΠΎΠ²Ρ‹ΠΉ массив, прСобразуя ΠΊΠ°ΠΆΠ΄Ρ‹ΠΉ элСмСнт исходного массива ΠΏΠΎ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ.
Π˜ΡΡ…ΠΎΠ΄Π½Ρ‹ΠΉ массив Π½Π΅ измСняСтся.

➑️ ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

const numbers = [1, 2, 3, 4, 5];

// Π£ΠΌΠ½ΠΎΠΆΠ°Π΅ΠΌ ΠΊΠ°ΠΆΠ΄Ρ‹ΠΉ элСмСнт Π½Π° 2
const doubled = numbers.map(num => num * 2);

console.log(doubled); // [2, 4, 6, 8, 10]


πŸ—£οΈ Π’ этом ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅:

β€’ map() примСняСт Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ ΠΊΠΎ всСм элСмСнтам массива
β€’ Π’ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅Ρ‚ Π½ΠΎΠ²Ρ‹ΠΉ массив с Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°ΠΌΠΈ
β€’ ИдСалСн для прСобразования Π΄Π°Π½Π½Ρ‹Ρ… (Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, ΡƒΠΌΠ½ΠΎΠΆΠ΅Π½ΠΈΠ΅, Ρ„ΠΎΡ€ΠΌΠ°Ρ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅).

CodeBase | Frontend | #JS
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πŸ‘©β€πŸ’» Π§Ρ‚ΠΎ Ρ‚Π°ΠΊΠΎΠ΅ ΠΌΠ΅Ρ‚ΠΎΠ΄ map() Π² JavaScript ΠΈ ΠΊΠ°ΠΊ ΠΎΠ½ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ?

map() β€” это ΠΌΠ΅Ρ‚ΠΎΠ΄ массивов Π² JavaScript, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ создаёт Π½ΠΎΠ²Ρ‹ΠΉ массив, прСобразуя ΠΊΠ°ΠΆΠ΄Ρ‹ΠΉ элСмСнт исходного массива ΠΏΠΎ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ.
Π˜ΡΡ…ΠΎΠ΄Π½Ρ‹ΠΉ массив Π½Π΅ измСняСтся.

➑️ ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

const numbers = [1, 2, 3, 4, 5];

// Π£ΠΌΠ½ΠΎΠΆΠ°Π΅ΠΌ ΠΊΠ°ΠΆΠ΄Ρ‹ΠΉ элСмСнт Π½Π° 2
const doubled = numbers.map(num => num * 2);

console.log(doubled); // [2, 4, 6, 8, 10]


πŸ—£οΈ Π’ этом ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅:

β€’ map() примСняСт Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ ΠΊΠΎ всСм элСмСнтам массива
β€’ Π’ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅Ρ‚ Π½ΠΎΠ²Ρ‹ΠΉ массив с Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°ΠΌΠΈ
β€’ ИдСалСн для прСобразования Π΄Π°Π½Π½Ρ‹Ρ… (Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, ΡƒΠΌΠ½ΠΎΠΆΠ΅Π½ΠΈΠ΅, Ρ„ΠΎΡ€ΠΌΠ°Ρ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅).

CodeBase | Frontend | #JS

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At a time when the Indian stock market is peaking and has rallied immensely compared to global markets, there are companies that have not performed in the last 10 years. These are definitely a minor portion of the market considering there are hundreds of stocks that have turned multibagger since 2020. What went wrong with these stocks? Reasons vary from corporate governance, sectoral weakness, company specific and so on. But the more important question is, are these stocks worth buying?

China’s stock markets are some of the largest in the world, with total market capitalization reaching RMB 79 trillion (US$12.2 trillion) in 2020. China’s stock markets are seen as a crucial tool for driving economic growth, in particular for financing the country’s rapidly growing high-tech sectors.Although traditionally closed off to overseas investors, China’s financial markets have gradually been loosening restrictions over the past couple of decades. At the same time, reforms have sought to make it easier for Chinese companies to list on onshore stock exchanges, and new programs have been launched in attempts to lure some of China’s most coveted overseas-listed companies back to the country.

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