4xx ๋น„์œจ ์ƒ์Šน ๋ฐ ํŠธ๋ž˜ํ”ฝ ๊ธ‰์ฆ ๋ถ„์„
ยท
w. Gemini
1. ํ˜„์ƒ ์ง„๋‹จ ๋ฐ ์˜๋ฏธ์ง€ํ‘œ์˜๋ฏธ๊ฒฐ๊ณผ์ ์œผ๋กœ ๋ฐœ์ƒํ•˜๋Š” ๋ฌธ์ œ๋†’์€ 4xx ๋น„์œจ์š”์ฒญ์˜ ๋‹ค์ˆ˜๊ฐ€ ํด๋ผ์ด์–ธํŠธ ์˜ค๋ฅ˜ (์˜ˆ: 404 Not Found, 400 Bad Request)๋กœ ์ฒ˜๋ฆฌ๋˜๊ณ  ์žˆ์Œ.์ •์ƒ์ ์ธ ์„œ๋น„์Šค ์ด์šฉ์ด ๋ฐฉํ•ด๋จ.๊ฐ‘์ž‘์Šค๋Ÿฌ์šด ํŠธ๋ž˜ํ”ฝ ๊ธ‰์ฆ์„œ๋ฒ„์— ๋“ค์–ด์˜ค๋Š” ์š”์ฒญ์˜ ์ˆ˜๊ฐ€ ๋‹จ๊ธฐ๊ฐ„์— ํญ๋ฐœ์ ์œผ๋กœ ๋Š˜์–ด๋‚จ.์„œ๋ฒ„ ๋ฆฌ์†Œ์Šค (CPU, ๋ฉ”๋ชจ๋ฆฌ, ๋„คํŠธ์›Œํฌ ๋Œ€์—ญํญ) ๊ณ ๊ฐˆ ์œ„ํ—˜.์ข…ํ•ฉ ๋ถ„์„๋Œ€๋Ÿ‰์˜ ๋น„์ •์ƒ์ ์ธ ์š”์ฒญ์ด ์„œ๋ฒ„๋กœ ์œ ์ž…๋˜์–ด ๋ฆฌ์†Œ์Šค๋ฅผ ์†Œ๋ชจํ•˜๊ณ  ์žˆ๋Š” ์ƒํƒœ.**์„œ๋น„์Šค ์žฅ์•  (5xx ๋ฐœ์ƒ)**๋กœ ์ด์–ด์ง€๊ธฐ ์ง์ „์ด๊ฑฐ๋‚˜ ์ด๋ฏธ ๋ฐœ์ƒํ–ˆ์„ ์ˆ˜ ์žˆ์Œ. 2. ์ฃผ์š” ์›์ธ ์ถ”์ •์ด๋Ÿฌํ•œ ํŒจํ„ด์ด ๋™์‹œ์— ๋‚˜ํƒ€๋‚  ๊ฒฝ์šฐ, ๋‹ค์Œ ์„ธ ๊ฐ€์ง€ ์›์ธ์„ ๊ฐ€์žฅ ๋จผ์ € ์˜์‹ฌํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.1. ๋ด‡/ํฌ๋กค๋Ÿฌ์˜ ๋น„์ •์ƒ์ ์ธ ํ™œ๋™ (Web Scraping, Bot Traffic)์›์ธ: ํŠน์ • ๋ด‡์ด..
๐Ÿ“ ์—ฐ์Šต ๋ฌธ์ œ 1: ๊ฐ„๋‹จํ•œ To-Do ๋ฆฌ์ŠคํŠธ ๊ตฌํ˜„
ยท
w. Gemini
๊ฐ€์žฅ ๊ธฐ๋ณธ์ ์ธ DOM ์กฐ์ž‘ ์—ฐ์Šต์ž…๋‹ˆ๋‹ค. document.querySelector(), addEventListener, element.classList.add() ๋“ฑ์˜ ๊ธฐ๋ณธ API์— ์ต์ˆ™ํ•ด์ง€๋Š” ๊ฒƒ์ด ๋ชฉํ‘œ์ž…๋‹ˆ๋‹ค.์š”๊ตฌ์‚ฌํ•ญ๋ชฉ๋ก ์ถ”๊ฐ€: ์ž…๋ ฅ ํ•„๋“œ์— ํ…์ŠคํŠธ๋ฅผ ์ž…๋ ฅํ•˜๊ณ  '์ถ”๊ฐ€' ๋ฒ„ํŠผ์„ ๋ˆ„๋ฅด๋ฉด ๋ชฉ๋ก์— ์ƒˆ๋กœ์šด ํ•ญ๋ชฉ์ด ์ถ”๊ฐ€๋˜์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.ํ•ญ๋ชฉ ์™„๋ฃŒ: ๋ชฉ๋ก ํ•ญ๋ชฉ์„ ํด๋ฆญํ•˜๋ฉด complete ์ƒํƒœ๋กœ ํ† ๊ธ€๋˜๋ฉฐ, ํ…์ŠคํŠธ์— ์ทจ์†Œ์„ ์ด ์ƒ๊ฒจ์•ผ ํ•ฉ๋‹ˆ๋‹ค.ํ•ญ๋ชฉ ์‚ญ์ œ: ๊ฐ ํ•ญ๋ชฉ ์˜†์— 'X' ๋ฒ„ํŠผ์„ ์ถ”๊ฐ€ํ•˜๊ณ , ํด๋ฆญ ์‹œ ํ•ด๋‹น ํ•ญ๋ชฉ์ด ๋ฆฌ์ŠคํŠธ์—์„œ ์ œ๊ฑฐ๋˜์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.๐Ÿ“Œ ์ ์šฉ ๊ฐ€์ด๋“œ์Šคํฌ๋ฆฝํŠธ: jQuery ๋Œ€์‹  ๋ฐ”๋‹๋ผ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ(ES6) ๋ฌธ๋ฒ•๋งŒ ์‚ฌ์šฉํ•˜์—ฌ ๊ตฌํ˜„ํ•˜์„ธ์š”.HTML/CSS:BEM: todo-app, todo-app__input-group, tod..
์—ด์„ธ ๋ฒˆ์งธ ๋ฌธ์ œ: Promise๋ฅผ ์‚ฌ์šฉํ•œ ๋น„๋™๊ธฐ ์ฒด์ด๋‹ (JS ๊ฐœ๋… ์‹ฌํ™” 2)
ยท
w. Gemini
์š”๊ตฌ์‚ฌํ•ญ ๋ฐ ํžŒํŠธPromise ๋ฐ˜ํ™˜ ํ•จ์ˆ˜ ์ •์˜:delayLog๋ผ๋Š” ํ•จ์ˆ˜๋ฅผ ์ •์˜ํ•ฉ๋‹ˆ๋‹ค. ์ด ํ•จ์ˆ˜๋Š” message์™€ delayTime์„ ์ธ์ˆ˜๋กœ ๋ฐ›์Šต๋‹ˆ๋‹ค.์ด ํ•จ์ˆ˜๋Š” ์ฆ‰์‹œ ์ƒˆ๋กœ์šด Promise ๊ฐ์ฒด๋ฅผ ๋ฐ˜ํ™˜ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. (ํžŒํŠธ: return new Promise((resolve, reject) => { ... }))๋น„๋™๊ธฐ ์ž‘์—… ๋ฐ ์„ฑ๊ณต:Promise ์ƒ์„ฑ์ž ๋‚ด๋ถ€์—์„œ setTimeout์„ ์‚ฌ์šฉํ•˜์—ฌ delayTime ํ›„์— ์‹คํ–‰๋˜๋„๋ก ํ•ฉ๋‹ˆ๋‹ค.ํƒ€์ด๋จธ๊ฐ€ ๋งŒ๋ฃŒ๋˜๋ฉด, Promise๋ฅผ ์„ฑ๊ณต ์ƒํƒœ๋กœ ๋งŒ๋“ญ๋‹ˆ๋‹ค. (ํžŒํŠธ: resolve(message) ํ˜ธ์ถœ)Promise ์ฒด์ด๋‹:delayLog ํ•จ์ˆ˜๋ฅผ ๋‘ ๋ฒˆ ์—ฐ์†์œผ๋กœ ํ˜ธ์ถœํ•˜๊ณ  **.then()**์œผ๋กœ ์—ฐ๊ฒฐํ•˜์—ฌ, ์ฒซ ๋ฒˆ์งธ ์ž‘์—…์ด ์™„๋ฃŒ๋œ ํ›„ ๋‘ ๋ฒˆ์งธ ์ž‘์—…์ด ์‹คํ–‰๋˜๋„๋ก ์ˆœ์„œ๋ฅผ ๋ณด์žฅํ•ฉ๋‹ˆ๋‹ค...
์—ด๋‘ ๋ฒˆ์งธ ๋ฌธ์ œ: ๋น„๋™๊ธฐ ์ž‘์—… ์‹œ๋ฎฌ๋ ˆ์ด์…˜ ๋ฐ ์ฝœ๋ฐฑ ํ•จ์ˆ˜ ์ดํ•ด
ยท
w. Gemini
์š”๊ตฌ์‚ฌํ•ญ๋น„๋™๊ธฐ ํ•จ์ˆ˜ ์ •์˜:processData๋ผ๋Š” ํ•จ์ˆ˜๋ฅผ ์ •์˜ํ•ฉ๋‹ˆ๋‹ค.์ด ํ•จ์ˆ˜๋Š” ๋‘ ๊ฐœ์˜ ์ธ์ˆ˜๋ฅผ ๋ฐ›์Šต๋‹ˆ๋‹ค:data (์ฒ˜๋ฆฌํ•  ์ž„์˜์˜ ๋ฐ์ดํ„ฐ ๋ฌธ์ž์—ด)callback (๋ฐ์ดํ„ฐ ์ฒ˜๋ฆฌ๊ฐ€ ์™„๋ฃŒ๋œ ํ›„ ์‹คํ–‰๋  ํ•จ์ˆ˜)๋น„๋™๊ธฐ ์ž‘์—… ์‹œ๋ฎฌ๋ ˆ์ด์…˜:processData ํ•จ์ˆ˜ ๋‚ด์—์„œ setTimeout ํƒ€์ด๋จธ ํ•จ์ˆ˜๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.ํƒ€์ด๋จธ๋Š” 2์ดˆ (2000ms) ํ›„ ์ž‘๋™ํ•˜๋„๋ก ์„ค์ •ํ•ฉ๋‹ˆ๋‹ค. (๋น„๋™๊ธฐ ์ž‘์—…์ด ์˜ค๋ž˜ ๊ฑธ๋ฆฌ๋Š” ์ƒํ™ฉ์„ ์‹œ๋ฎฌ๋ ˆ์ด์…˜)๋ฐ์ดํ„ฐ ์ฒ˜๋ฆฌ ๋ฐ ์ฝœ๋ฐฑ ์‹คํ–‰:2์ดˆ๊ฐ€ ์ง€๋‚œ ํ›„, ์ฝœ๋ฐฑ ํ•จ์ˆ˜๋ฅผ ์‹คํ–‰ํ•˜๊ธฐ ์ „์— data ๋ฌธ์ž์—ด ๋’ค์— "- ์ฒ˜๋ฆฌ ์™„๋ฃŒ๋จ"์ด๋ผ๋Š” ํ…์ŠคํŠธ๋ฅผ ๋ถ™์—ฌ ์ƒˆ๋กœ์šด ๊ฒฐ๊ณผ ๋ฌธ์ž์—ด์„ ๋งŒ๋“ญ๋‹ˆ๋‹ค.์ด ๊ฒฐ๊ณผ ๋ฌธ์ž์—ด์„ callback ํ•จ์ˆ˜์˜ ์ธ์ˆ˜๋กœ ์ „๋‹ฌํ•˜๋ฉฐ ํ˜ธ์ถœํ•ฉ๋‹ˆ๋‹ค.์‚ฌ์šฉ ๋ฐ ์ถœ๋ ฅ:handleResult๋ผ๋Š” ๋ณ„๋„์˜ ์ฝœ๋ฐฑ ํ•จ์ˆ˜๋ฅผ ์ •์˜ํ•ฉ๋‹ˆ๋‹ค. ์ด ..
์—ดํ•œ ๋ฒˆ์งธ ๋ฌธ์ œ: ๋ฐฐ์—ด ๋ฐ ํ•จ์ˆ˜๋ฅผ ํ™œ์šฉํ•œ ์žฅ๋ฐ”๊ตฌ๋‹ˆ ๊ณ„์‚ฐ๊ธฐ
ยท
w. Gemini
์š”๊ตฌ์‚ฌํ•ญ๋ฐ์ดํ„ฐ ์ •์˜ (JS):๋‹ค์Œ ๊ตฌ์กฐ๋ฅผ ๊ฐ€์ง„ ์ƒํ’ˆ ๊ฐ์ฒด ๋ฐฐ์—ด์„ JavaScript ์ฝ”๋“œ ๋‚ด์— ์ •์˜ํ•ฉ๋‹ˆ๋‹ค. ์ด ๋ฐฐ์—ด์„ cartItems ๋ณ€์ˆ˜์— ์ €์žฅํ•˜์„ธ์š”.JavaScriptconst cartItems = [ { id: 1, name: '๋…ธํŠธ๋ถ', price: 1200000, quantity: 1 }, { id: 2, name: '๋ฌด์„  ๋งˆ์šฐ์Šค', price: 35000, quantity: 2 }, { id: 3, name: '๋ชจ๋‹ˆํ„ฐ', price: 300000, quantity: 1 }, { id: 4, name: 'ํ‚ค๋ณด๋“œ', price: 80000, quantity: 3 }];์ดํ•ฉ ๊ณ„์‚ฐ ํ•จ์ˆ˜ ๊ตฌํ˜„:calculateTotal์ด๋ผ๋Š” ํ•จ์ˆ˜๋ฅผ ๊ตฌํ˜„ํ•ฉ๋‹ˆ๋‹ค.์ด ํ•จ์ˆ˜๋Š” cartItems ๋ฐฐ์—ด์„ ..