20 POSTS

Javascript 5

  • #javascript#web-scraping

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ๋กœ ๋‹ค์Œ ์‚ฌ์ „ ํฌ๋กค๋งํ•ด๋ณด๊ธฐ

    ์‚ฌ์‹ค ์ด๊ฑฐ ๋ธ”๋กœ๊ทธ ์œ ์ž… ๋Š˜๋ฆฌ๋ ค๊ณ  ํ•˜๋Š” ๊ฑฐ์ž„

    5๋ถ„
  • #browser#javascript

    ํฌ๋กฌ ์ต์Šคํ…์…˜ ๋งŒ๋“ค๊ธฐ

    ํ•„์š”ํ•œ ๊ธฐ๋Šฅ ํ•˜๋‚˜ ์ฏค ๋งŒ๋“ค์–ด์„œ ์‚ฌ์šฉํ•ด๋ณด์ž.

    3๋ถ„
  • #javascript#typescript

    ECMAScript ๋ช…์„ธ ์ฝ์–ด๋ณด๊ธฐ (1)

    ๊ฐ€๋” ๋ฌธ์„œ๋ฅผ ๋ณผ ๋•Œ ๋งˆ๋‹ค ๋„๋ง์ณค๋˜ ๊ทธ ๊ณณ

    10๋ถ„
  • #javascript

    ์žฌ๋ฐŒ๋Š” ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๋ฉด์ ‘ ๋ฌธ์ œ

    ๋ญ”๊ฐ€ ์ด์ƒํ•œ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๋ฉด์ ‘ ๋ฌธ์ œ๋Š” ์žฌ๋ฐŒ๋‹ค. ๋‹จ ๋‚ด๊ฐ€ ๊ตฌ์ง ์ค‘์ด ์•„๋‹ ๋•Œ๋งŒ.

    5๋ถ„
  • #javascript

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ String

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์˜ String

    4๋ถ„
  • #webpack#micro-frontend#javascript

    Webpack Module Federation์— ๋Œ€ํ•ด ์•Œ์•„๋ณด์ž

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ์•„ํ‚คํ…์ณ์˜ ๊ฒŒ์ž„์ฒด์ธ์ €๋ผ๊ณ  ํ•˜๋Š”๋ฐ, ๊ณผ์—ฐ ๊ทธ๋ ‡๊ฒŒ ๋  ์ˆ˜ ์žˆ์„๊นŒ?

    8๋ถ„
  • #eslint#javascript

    eslint-config-yceffort, ๋‚˜๋งŒ์˜ eslint-config ๋งŒ๋“ค๊ธฐ

    ๋‚˜๋งŒ์˜ ์ผ๊ด€๋œ javascript code๋ฅผ ์œ„ํ•˜์—ฌ ๋งŒ๋“ค์–ด๋ณด์•˜์Šต๋‹ˆ๋‹ค.

    3๋ถ„
  • #javascript#react

    MobX๋ฅผ ๊ณต๋ถ€ํ•˜์ž (3) - ๊ธฐ๋ณธ ๊ฐœ๋…๊ณผ ์›์น™

    MobX 1ํŽ˜์ด์ง€ ์š”์•ฝ์— ๋Œ€ํ•œ ๊ฐ„๋‹จํ•œ ๋ฒˆ์—ญ

    5๋ถ„
  • #javascript#nodejs

    CommonJS์™€ ES Modules์€ ์™œ ํ•จ๊ป˜ ํ•  ์ˆ˜ ์—†๋Š”๊ฐ€?

    [์ด ๊ธ€](https://redfin.engineering/node-modules-at-war-why-commonjs-and-es-modules-cant-get-along-9617135eeca1)์„ ๋ฒˆ์—ญ ์š”์•ฝํ•œ ๊ธ€์ž…๋‹ˆ๋‹ค. ## CommonJS์™€ ES Modules์€ ์™œ ํ•จ๊ป˜ ํ•  ์ˆ˜ ์—†๋Š”๊ฐ€? [๋…ธ๋“œ14](https://nodejs.org/en/blog/r...

    11๋ถ„
  • #javascript#web-performance

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๋ฉ”๋ชจ๋ฆฌ ๋ˆ„์ˆ˜์™€ ํ•ด๊ฒฐ ๋ฐฉ๋ฒ•

    ```toc tight: true, from-heading: 2 to-heading: 3 ``` [4 Types of Memory Leaks in JavaScript and How to Get Rid Of Them](https://auth0.com/blog/four-types-of-leaks-in-your-javascript-code-and-how-to-...

    28๋ถ„
  • #javascript#web-performance

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์˜ ๋น„์šฉ

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์˜ ๋น„์šฉ 2019ver

    13๋ถ„
  • #javascript#algorithm

    ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ๋กœ ๊ตฌํ˜„ํ•ด๋ณด๋Š” ๋‹ค์–‘ํ•œ ์ •๋ ฌ

    ## ๊ฑฐํ’ˆ(๋ฒ„๋ธ”)์ •๋ ฌ - ๊ฐ€๊นŒ์šด ๋‘ ์›์†Œ๋ฅผ ๋น„๊ตํ•ด์„œ ์ •๋ ฌํ•˜๋Š” ๋ฐฉ์‹์ด๋‹ค. - `O(N^2)` - ์ฝ”๋“œ๊ฐ€ ๋‹จ์ˆœํ•˜๊ณ  ๊ตฌํ˜„ํ•˜๊ธฐ ์‰ฝ๋‹ค - ๋А๋ฆฌ๋‹ค. ![bubble-sort](https://upload.wikimedia.org/wikipedia/commons/3/37/Bubble_sort_animation.gif) ```javascript function bub...

    3๋ถ„
  • #web-performance#javascript

    Notion ์„ฑ๋Šฅ ์ตœ์ ํ™”

    [Case Study: Analyzing Notion app performance](https://3perf.com/blog/notion/)๋ฅผ ์ œ๋ฉ‹๋Œ€๋กœ ์š”์•ฝํ•œ ๊ธ€์ž…๋‹ˆ๋‹ค. ์™ ๋งŒํ•˜๋ฉด ์ € ๊ธ€์„ ์ฐธ๊ณ ํ•˜์„ธ์š”. ```toc tight: true, from-heading: 2 to-heading: 3 ``` ## ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์˜ ๋น„์šฉ ๋ณดํ†ต `๋กœ๋”ฉ ์†๋„`๋ฅผ ์ด์•ผ๊ธฐํ•˜๋ฉด...

    22๋ถ„
  • #javascript

    Javascript Prototype

    `toc tight: true, from-heading: 1 to-heading: 4 ` # ํ”„๋กœํ† ํƒ€์ž… ์ƒ์†์ด๋ผ๋Š” ๊ด€์ ์—์„œ ๋ดค์„ ๋•Œ, ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์˜ ์œ ์ผํ•œ ์ƒ์„ฑ์ž๋Š” ๊ฐ์ฒด ๋ฟ์ด๋‹ค. ๋ชจ๋“  ๊ฐ์ฒด๋Š” `[[prototype]]` ์ด๋ผ๋Š” private ์†์„ฑ์„ ๊ฐ€์ง€๊ณ  ์žˆ๋Š”๋ฐ, ์ด๋Š” ์ž์‹ ์˜ ํ”„๋กœํ† ํƒ€์ž…์ด ๋˜๋Š” ๋‹ค๋ฅธ ๊ฐ์ฒด๋ฅผ ๊ฐ€๋ฆฌํ‚จ๋‹ค. ์ด๋ ‡๊ฒŒ ์ž์‹ ์˜ ํ”„๋กœํ† ํƒ€์ž…์˜ ํ”„...

    9๋ถ„
  • #javascript

    Javascript Execution Context

    ๋“ค์–ด๊ฐ€๊ธฐ์— ์•ž์„œ ๋” ์ข‹๊ณ  ์ œ๊ฐ€ ๋งŽ์ด ์ฐธ๊ณ ํ•œ ๊ธ€์ด [์—ฌ๊ธฐ](https://poiemaweb.com/js-execution-context)์— ์žˆ์Šต๋‹ˆ๋‹ค. ์ด๊ธ€์„ ๋ณด์‹œ๋Š”๊ฒŒ ๋‚ซ์Šต๋‹ˆ๋‹ค. ```toc tight: true, from-heading: 1 to-heading: 4 ``` # ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ์‹คํ–‰์ปจํ…์ŠคํŠธ ์ด๋ฒˆ ํฌ์ŠคํŒ…์œผ๋กœ ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ์‹คํ–‰ ์ปจํ…์ŠคํŠธ์— ๋Œ€ํ•ด ์˜จ...

    17๋ถ„
  • #algorithm#javascript

    Codility - Nesting

    ## Nesting ### ๋ฌธ์ œ `(`์™€ `)`๋กœ ์ด๋ฃจ์–ด์ง„ ๋ฌธ์ž์—ด์ด ์žˆ๋‹ค. ์ด ๋ฌธ์ž์—ด์˜ `(` `)` ์ง์ด ๋งž๊ฒŒ ์ด๋ฃจ์–ด์ ธ ์žˆ๋Š”์ง€ ํ™•์ธํ•˜๋ผ. ### ํ’€์ด ```javascript function solution(S) { const split = S.split('') const stack = [] for (let i of split...

    1๋ถ„
  • #algorithm#javascript

    Codility - Max Counters

    ## Max Counters ### ๋ฌธ์ œ ์ˆซ์ž N์ด ์ฃผ์–ด์ง„๋‹ค. ์ด ์ˆซ์ž N์€ ๋ชจ๋“  ์š”์†Œ๊ฐ€ 0์ธ ๊ธธ์ด N์ธ ๋ฐฐ์—ด์„ ์˜๋ฏธํ•œ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ๋ฐฐ์—ด A๊ฐ€ ์กด์žฌํ•œ๋‹ค. ``` ์ˆซ์ž N์ด 5๋กœ ์ฃผ์–ด์ง€๊ณ , ๋ฐฐ์—ด A๋Š” [3, 4, 4, 6, 1, 4, 4] ๋ผ๊ณ  ๊ฐ€์ •ํ•˜์ž. ์ดˆ๊ธฐ ๊ฐ’ [0, 0, 0, 0 0] A[0] = 3, 3๋ฒˆ์งธ (3-1๋ฒˆ์งธ) ์š”์†Œ์˜ ํฌ๊ธฐ๋ฅผ 1 ๋Š˜๋ฆฐ...

    3๋ถ„
  • #algorithm#javascript

    Codility - Missing Integer

    ## Missing Integer ### ๋ฌธ์ œ ์ฃผ์–ด์ง„ ๋ฐฐ์—ด A์— ๋น ์ ธ ์žˆ๋Š” ๊ฐ€์žฅ ์ž‘์€ ์–‘์˜ ์ •์ˆ˜๋ฅผ ๊ตฌํ•˜์‹œ์˜ค ``` A=[1, 3, 6, 4, 1, 2] ์ด๋ผ๋ฉด ๋‹ต์€ 5 A=[1, 2, 3] ์ด๋ผ๋ฉด ๋‹ต์€ 4 A=[-1, -3] ์ด๋ผ๋ฉด ๋‹ต์€ 1 ``` ### ํ’€์ด ```javascript function solution(A) { // ๋ฐฐ์—ด ๊ธธ...

    1๋ถ„
  • #algorithm#javascript

    Codility - Distinct

    ## Distinct ### ๋ฌธ์ œ ๋ฐฐ์—ด A์•ˆ์— uniqueํ•œ ์ˆซ์ž๊ฐ€ ๋ช‡ ๊ฐœ ์žˆ๋Š”์ง€ ๋ฆฌํ„ดํ•˜๋ผ. ### ํ’€์ด ```javascript function solution(A) { return [...new Set(A)].length } ``` Set์„ ํ™œ์šฉํ•˜๋ฉด ์‰ฝ๊ฒŒ ํ’€ ์ˆ˜ ์žˆ๋‹ค. Set์ด ์•„๋‹ˆ๋”๋ผ๋„ object๋“ฑ์„ ํ™œ์šฉํ•ด๋ณด๋ฉด ๋œ๋‹ค. https:...

    1๋ถ„
  • #algorithm#javascript

    Codility - Cyclic Rotation

    ## 2-1 Cyclic Rotation ### ๋ฌธ์ œ ๋ฐฐ์—ด A๊ฐ€ ์ฃผ์–ด์ง€๊ณ  ์ด๋ฅผ K๋ฒˆ ๊ฐ ๋ฐฐ์—ด์˜ ์š”์†Œ๋ฅผ ์˜ค๋ฅธ์ชฝ์œผ๋กœ ์ด๋™์‹œ์ผฐ์„ ๋•Œ, ๊ทธ ๊ฒฐ๊ณผ๋ฅผ ๋ฆฌํ„ดํ•˜์‹œ์˜ค. ``` A = [3, 8, 9, 7, 6] K = 3 [3, 8, 9, 7, 6] -> [6, 3, 8, 9, 7] [6, 3, 8, 9, 7] -> [7, 6, 3, 8, 9] [7, 6, 3, 8...

    1๋ถ„