MouseBall54

Mechanical engineering background, now working in computer vision and AI.

Recent posts

JavaScript ํ”„๋กœ๋ฏธ์Šค: Promise.all vs. Promise.race

3 minute read

์—ฌ๋Ÿฌ ๋น„๋™๊ธฐ ์ž‘์—…์„ ์ฒ˜๋ฆฌํ•˜๊ธฐ ์œ„ํ•œ JavaScript์˜ Promise.all๊ณผ Promise.race์˜ ์ฐจ์ด์ ์„ ์•Œ์•„๋ณด์„ธ์š”. ๋ชจ๋“  ํ”„๋กœ๋ฏธ์Šค๊ฐ€ ์™„๋ฃŒ๋  ๋•Œ๊นŒ์ง€ ๊ธฐ๋‹ค๋ ค์•ผ ํ•˜๋Š” ๊ฒฝ์šฐ์™€ ๊ฐ€์žฅ ๋จผ์ € ์™„๋ฃŒ๋œ ํ”„๋กœ๋ฏธ์Šค์— ๋”ฐ๋ผ ํ–‰๋™ํ•ด์•ผ ํ•˜๋Š” ๊ฒฝ์šฐ๋ฅผ ์ดํ•ดํ•˜์„ธ์š”.

JavaScript โ€œjQuery is not definedโ€ ์˜ค๋ฅ˜ ํ•ด๊ฒฐ ๋ฐฉ๋ฒ•

3 minute read

ํ”ํ•œ โ€œUncaught ReferenceError: jQuery is not definedโ€ ์˜ค๋ฅ˜๋Š” ์Šคํฌ๋ฆฝํŠธ๊ฐ€ jQuery๋ฅผ ์‚ฌ์šฉํ•˜๊ธฐ ์ „์— ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๊ฐ€ ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ๋กœ๋“œ๋˜์—ˆ๋Š”์ง€ ํ™•์ธํ•˜์—ฌ ํ•ด๊ฒฐํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ด ๊ฐ€์ด๋“œ๋Š” ์›์ธ๊ณผ ํ•ด๊ฒฐ์ฑ…์„ ๋‹ค๋ฃน๋‹ˆ๋‹ค.

JavaScript innerHTML vs. textContent: ์–ด๋Š ๊ฒƒ์„ ์‚ฌ์šฉํ•ด์•ผ ํ• ๊นŒ์š”?

3 minute read

JavaScript์—์„œ innerHTML๊ณผ textContent์˜ ์ฃผ์š” ์ฐจ์ด์ ์„ ์ดํ•ดํ•˜์„ธ์š”. ์›น ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜์—์„œ ๋” ๋‚˜์€ ๋ณด์•ˆ, ์„ฑ๋Šฅ ๋ฐ ์˜ˆ์ธก ๊ฐ€๋Šฅ์„ฑ์„ ์œ„ํ•ด ๊ฐ ์†์„ฑ์„ ์–ธ์ œ ์‚ฌ์šฉํ•ด์•ผ ํ•˜๋Š”์ง€ ์•Œ์•„๋ณด์„ธ์š”.

JavaScript ๋™๋“ฑ ์—ฐ์‚ฐ์ž: == vs. === (๋Š์Šจํ•œ ๋น„๊ต vs. ์—„๊ฒฉํ•œ ๋น„๊ต)

4 minute read

JavaScript์—์„œ ๋Š์Šจํ•œ ๋™๋“ฑ ์—ฐ์‚ฐ์ž(==)์™€ ์—„๊ฒฉํ•œ ๋™๋“ฑ ์—ฐ์‚ฐ์ž(===)์˜ ์ค‘์š”ํ•œ ์ฐจ์ด์ ์„ ๋ฐฐ์šฐ์„ธ์š”. ํƒ€์ž… ๊ฐ•์ œ ๋ณ€ํ™˜์ด ์–ด๋–ป๊ฒŒ ์ž‘๋™ํ•˜๋Š”์ง€ ์ดํ•ดํ•˜๊ณ , ์ผ๋ฐ˜์ ์ธ ๋ฒ„๊ทธ๋ฅผ ํ”ผํ•˜๊ธฐ ์œ„ํ•ด ๊ฑฐ์˜ ํ•ญ์ƒ ===๋ฅผ ์‚ฌ์šฉํ•ด์•ผ ํ•˜๋Š” ์ด์œ ๋ฅผ ์•Œ์•„๋ณด์„ธ์š”.

JavaScript async/await ์˜ค๋ฅ˜ ์ฒ˜๋ฆฌ ๋งˆ์Šคํ„ฐํ•˜๊ธฐ

4 minute read

JavaScript์—์„œ tryโ€ฆcatch ๋ธ”๋ก์„ ์‚ฌ์šฉํ•˜์—ฌ async/await ํ•จ์ˆ˜์˜ ์˜ค๋ฅ˜๋ฅผ ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ์ฒ˜๋ฆฌํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ๋ฐฐ์šฐ์„ธ์š”. ์ฒ˜๋ฆฌ๋˜์ง€ ์•Š์€ ํ”„๋กœ๋ฏธ์Šค ๊ฑฐ๋ถ€๋ฅผ ํ”ผํ•˜๊ณ , ๊ฒฌ๊ณ ํ•˜๊ณ  ์‹ ๋ขฐํ•  ์ˆ˜ ์žˆ๋Š” ๋น„๋™๊ธฐ ์ฝ”๋“œ๋ฅผ ์ž‘์„ฑํ•˜์„ธ์š”.