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๐Ÿ“š๊ฐœ๋ฐœ ๋ณต์Šต ๋…ธํŠธ

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๐Ÿ“š๊ฐœ๋ฐœ ๋ณต์Šต ๋…ธํŠธ

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๋ถ„๋ฅ˜ ์ „์ฒด๋ณด๊ธฐ(210)

  • ๋™๊ธฐ์™€ ๋น„๋™๊ธฐ callback

    ๋™๊ธฐ : ์ž‘์—…์ด ๋‹ค ๋๋‚˜๋ฉด ๋‹ค์Œ ์ž‘์—… ๋น„๋™๊ธฐ : ์ž‘์—…์ด ๋‹ค ๋๋‚˜์ง€ ์•Š์•„๋„ ๋‹ค๋ฅธ ์ž‘์—… ์‹คํ–‰ํ•จ. sample.txt ํŒŒ์ผ ์ƒ์„ฑํ•˜์—ฌ ์ž„์˜ ๋ฌธ์ž B ์ž‘์„ฑ sync.js ์ƒ์„ฑ ํ›„ ์ฝ”๋“œ ์ž‘์„ฑ ๋™๊ธฐ์ฒ˜๋ฆฌ var fs = require('fs'); //readFileSync console.log('A'); //sync ๋™๊ธฐ ์ฒ˜๋ฆฌ var result = fs.readFileSync('syntax/sample.txt', 'utf8'); console.log(result); console.log('C'); ์ฝ”๋“œ ์ˆœ์„œ๋Œ€๋กœ ๋‚˜์˜ด ๋น„๋™๊ธฐ์ฒ˜๋ฆฌ console.log('A'); //๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ fs.readFile('syntax/sample.txt', 'utf8', function(err, result){ console.log(resu..

    2023.08.23
  • ํ•จ์ˆ˜ ์ ์šฉํ•˜์—ฌ ์ฝ”๋“œ ์ •๋ฆฌ

    ์ด์ „์— ์ž‘์„ฑํ•œ main.js ์ฝ”๋“œ ์ •๋ฆฌ ํ•จ์ˆ˜ ์ž‘์„ฑํ•˜์—ฌ ์ค‘๋ณต์ฝ”๋“œ ์ œ๊ฑฐ var http = require('http'); var fs = require('fs'); //url์ด๋ผ๋Š” ๋ชจ๋“ˆ์„ ์‚ฌ์šฉํ•  ๊ฒƒ์ด๋ผ๋Š” ์ฝ”๋“œ var url = require('url'); //๋ณธ๋ฌธ ๋ถ€๋ถ„ ํ•จ์ˆ˜๋กœ ์„ค์ •ํ•˜์—ฌ ์ค‘๋ณต ์ œ๊ฑฐ //title, list, body๊ฐ’์„ ๋ฐ›์•„ html์— ๋ฐ˜์˜ function templateHTML(title, list, body){ return ` WEB ${list} ${body} `; } //ํŒŒ์ผ ๋ฆฌ์ŠคํŠธ ๋ถˆ๋Ÿฌ์™€์„œ ๊ธ€๋ชฉ๋ก ์ƒ์„ฑ ํ•จ์ˆ˜ //dataํด๋”์˜ ๋ฆฌ์ŠคํŠธ๋ฅผ ๋ฐ›์•„์™€ html์— ๋‚˜ํƒ€๋ƒ„ function templateList(filelist){ var list = ''; var i = 0; while (i < f..

    2023.08.23
  • nodejs ํŒŒ์ผ ๋ชฉ๋ก ์ฝ์–ด์„œ ์›นํŽ˜์ด์ง€ ๋™์  ์ ์šฉ

    data์— ๋“ค์–ด์žˆ๋Š” ํŒŒ์ผ ๋ชฉ๋ก nodejs๋กœ ์ฝ๊ธฐ readdir.js ํŒŒ์ผ ์ƒ์„ฑ //./์˜ ์˜๋ฏธ : ํ˜„์žฌ ๋””๋ ‰ํ† ๋ฆฌ const testFolder = './data'; const fs = require('fs'); fs.readdir(testFolder, function(error, filelist) { console.log(filelist); }) console์—์„œ ๋ฐฐ์—ด์˜ ํ˜•ํƒœ๋กœ ํŒŒ์ผ ๋ชฉ๋ก ํ™•์ธ ๊ฐ€๋Šฅ! ์œ„๋ฅผ ํ™œ์šฉํ•˜์—ฌ data ๋””๋ ‰ํ† ๋ฆฌ์— ์žˆ๋Š” ํŒŒ์ผ๋“ค์˜ ์ด๋ฆ„์„ ์ด์šฉํ•ด์„œ ๊ธ€ ๋ชฉ๋ก์„ ์ƒ์„ฑํ•˜๋Š” ๊ธฐ๋Šฅ var http = require('http'); var fs = require('fs'); //url์ด๋ผ๋Š” ๋ชจ๋“ˆ์„ ์‚ฌ์šฉํ•  ๊ฒƒ์ด๋ผ๋Š” ์ฝ”๋“œ var url = require('url'); var app = http.cre..

    2023.08.23
  • Not found ์˜ค๋ฅ˜ ๊ตฌํ˜„

    ์กด์žฌํ•˜์ง€ ์•Š๋Š” ์ •๋ณด์— ๋Œ€ํ•œ ์š”์ฒญ์ด ๋“ค์–ด์™”์„ ๋•Œ Not found ์˜ค๋ฅ˜ ๋ฉ”์‹œ์ง€๋ฅผ ์ „์†กํ•˜๋Š” ๋ฐฉ๋ฒ• main.js var http = require('http'); var fs = require('fs'); //url์ด๋ผ๋Š” ๋ชจ๋“ˆ์„ ์‚ฌ์šฉํ•  ๊ฒƒ์ด๋ผ๋Š” ์ฝ”๋“œ var url = require('url'); var app = http.createServer(function(request, response) { var _url = request.url; //์ฝ”๋“œ ์ˆ˜์ • var queryData = url.parse(_url, true).query; var pathname = url.parse(_url, true).pathname var title = queryData.id; console.log(url.parse(_url, ..

    2023.08.22
  • console ์ž…๋ ฅ๊ฐ’

    ์ฝ˜์†” ํ™˜๊ฒฝ์—์„œ ์•ฑ์„ ์‹คํ–‰ํ•  ๋•Œ ์ž…๋ ฅ ๊ฐ’์„ ์ „๋‹ฌํ•˜๋Š” ๋ฐฉ๋ฒ• //แ„แ…ฉแ†ซแ„‰แ…ฉแ†ฏแ„‹แ…ฆแ„‰แ…ฅ์˜ แ„‹แ…ตแ†ธแ„…แ…งแ†จ๊ฐ’ var args = process.argv; console.log(args); console.log('A'); console.log('B'); if(false){ console.log('C1'); } else { console.log('C2'); } console.log('D'); ๋ฐฐ์—ด์˜ ํ˜•ํƒœ๋กœ ์•„๋ž˜์˜ 3๊ฐ€์ง€ ์ •๋ณด๊ฐ€ ๋‚˜์˜ด js๋’ค์˜ ์ž…๋ ฅํ•œ ๊ฐ’์€ ์ถœ๋ ฅ ์ •๋ณด ์ค‘ ์„ธ๋ฒˆ์งธ์— ํ•ด๋‹น! ๋•Œ๋ฌธ์— ์ถœ๋ ฅ๊ฐ’์€ args[2] ์š”์†Œ์™€ ๊ฐ™์Œ. ์ž…๋ ฅ๊ฐ’์„ ํ†ตํ•ด ์ œ์–ด๋ฌธ์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Œ. ํ˜„์žฌ๋Š” if๋ฌธ์ด false๋กœ ๊ณ ์ •๋˜์–ด ์žˆ๊ธฐ ๋•Œ๋ฌธ์— 'C2'๋งŒ ์ถœ๋ ฅ๋จ ์ฝ”๋“œ๋ฅผ ์•„๋ž˜์™€ ๊ฐ™์ด ์ˆ˜์ • args[2]๊ฐ€ ๋ฌด์—‡์ด๋ƒ์— ๋”ฐ๋ผ if๋ฌธ ์ œ์–ด //แ„แ…ฉแ†ซแ„‰แ…ฉแ†ฏแ„‹แ…ฆ..

    2023.08.22
  • ํŒŒ์ผ์„ ์ด์šฉํ•ด ๋ณธ๋ฌธ ์ƒ์„ฑ

    ํŒŒ์ผ์— ๋ณธ๋ฌธ์„ ์ €์žฅํ•˜๊ณ , Node.js์˜ ํŒŒ์ผ ์ฝ๊ธฐ ๊ธฐ๋Šฅ(fs.readFile)์„ ์ด์šฉํ•ด์„œ ๋ณธ๋ฌธ์„ ์ƒ์„ฑ data๋ผ๋Š” ํด๋”๋ฅผ ์ƒ์„ฑํ•˜์—ฌ ๊ฐ๊ฐ ๋ณด์—ฌ์ฃผ๊ณ  ์‹ถ์€ ๋ณธ๋ฌธ ๋‚ด์šฉ ํŒŒ์ผ์„ ์ €์žฅ์œ ์˜ํ•  ์ main.js๊ฐ€ data ํด๋”๋ณด๋‹ค ์ƒ์œ„ ํด๋”์— ์กด์žฌํ•ด์•ผ ํ•จ!! var http = require('http'); var fs = require('fs'); //url์ด๋ผ๋Š” ๋ชจ๋“ˆ์„ ์‚ฌ์šฉํ•  ๊ฒƒ์ด๋ผ๋Š” ์ฝ”๋“œ var url = require('url'); var app = http.createServer(function(request, response) { var _url = request.url; //์ฝ”๋“œ ์ˆ˜์ • var queryData = url.parse(_url, true).query; var title = queryData.i..

    2023.08.22
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