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๐Ÿฅ• vegetable-market

์š”๊ตฌ์‚ฌํ•ญ : ๋””์ž์ธ์— ๋‚˜์™€์žˆ๋Š” ์ฑ„ํŒ… ํƒญ UI๋ฅผ ๊ตฌํ˜„, ๊ตฌํ˜„ ๋ฐฉ์‹์€ ์ž์œ 

image


โ—ผ [JavaScript] ์—์„œ ๋ณ€์ˆ˜ ์„ ์–ธ์„ ํ•˜๋Š” 3๊ฐ€์ง€ ๋ฐฉ๋ฒ•

(1) const : ๊ฐ’์„ ํ•œ ๋ฒˆ ํ• ๋‹นํ•œ ํ›„ ๋ณ€๊ฒฝํ•  ์ˆ˜ ์—†๋‹ค.

const price = 1000;

(2) let : ๊ฐ’์˜ ์žฌํ• ๋‹น์ด ๊ฐ€๋Šฅ (์žฌํ• ๋‹น ์‹œ ๋ณ€์ˆ˜ ์ด๋ฆ„๋งŒ์œผ๋กœ ์žฌํ• ๋‹นํ•ด์•ผํ•œ๋‹ค)

let price = 1000;
price = 2000;

(3) var : ๊ฐ’์˜ ์žฌํ• ๋‹น์ด ๊ฐ€๋Šฅ (์ค‘๋ณต๋œ ์ด๋ฆ„์œผ๋กœ ์žฌํ• ๋‹น์ด ๊ฐ€๋Šฅํ•˜๋‹ค)

var price = 1000;
var price = 2000;

โ—ผ ํ•จ์ˆ˜๋ž€? ์™œ ํ•จ์ˆ˜๋ฅผ ์ž˜๊ฒŒ ๋‚˜๋ˆ„๋ฉด ์ข‹์„๊นŒ?

๊ฐ€์žฅ ํฐ ์ด์œ  : ์žฌ์‚ฌ์šฉ์„ฑ์„ ๋†’์ด๊ธฐ ์œ„ํ•ด

  • ์ฝ”๋“œ๋ฅผ ์ž‘์„ฑํ•˜๋Š” ์‹œ๊ฐ„์„ ์ ˆ์•ฝํ•˜๊ณ  ์œ ์ง€๋ณด์ˆ˜๋ฅผ ์‰ฝ๊ฒŒ ๋งŒ๋“ค์–ด์ค€๋‹ค

  • ํ•จ์ˆ˜๋ฅผ ์ž‘์€ ๋‹จ์œ„๋กœ ๋‚˜๋ˆ„๋ฉด ์ฝ”๋“œ์˜ ๊ฐ€๋…์„ฑ๋„ ํ–ฅ์ƒ๋œ๋‹ค (์ฝ”๋“œ๊ฐ€ ๊ฐ„๊ฒฐํ•˜๊ณ  ๋ช…ํ™•ํ•ด์ง„๋‹ค)

  • ํ•จ์ˆ˜๋ฅผ ์ž‘๊ฒŒ ๋‚˜๋ˆ„๋ฉด ๋””๋ฒ„๊น…ํ•˜๊ธฐ ์‰ฝ๋‹ค (์ž‘์€ ํ•จ์ˆ˜๋Š” ์˜ค๋ฅ˜๋ฅผ ์ฐพ๊ธฐ ์‰ฝ๋‹ค, ๋ฌธ์ œ๊ฐ€ ์žˆ๋Š” ํ•จ์ˆ˜๋งŒ ๊ฒ€ํ† ํ•˜๋ฉด ๋œ๋‹ค)

  • ์ฝ”๋“œ์˜ ๊ฒฐํ•ฉ๋„๋ฅผ ๋‚ฎ์ถœ์ˆ˜์žˆ๋‹ค (ํ•จ์ˆ˜๋ฅผ ์ž‘๊ฒŒ ๋‚˜๋ˆ„๋ฉด ํ•จ์ˆ˜ ๊ฐ„์˜ ์˜์กด์„ฑ์ด ์ค„์–ด๋“ค๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค)

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vegetable market UI

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