์›นํ”„ ๋…ํ•™ 2

[์ƒํ™œ์ฝ”๋”ฉ] Nodejs๋กœ Database ๋‹ค๋ฃจ๊ธฐ(3)

์ด๋ฒˆ ์ˆ˜์—…์—์„œ๋Š” ์ €๋ฒˆ ์ˆ˜์—…๊นŒ์ง€ ์งฐ๋˜ ์ฝ”๋“œ์—์„œ fs๋ฅผ ์ด์šฉํ–ˆ๋˜ ๋ถ€๋ถ„์„ database๋ฅผ ์ด์šฉํ•˜๋„๋ก ๋ฐ”๊ฟ€ ๊ฒƒ์ด๋‹ค! ๊ทธ์ „์— app_file.js์˜ ๋ณต์‚ฌ๋ณธ app_mysql.js๋ฅผ ๋งŒ๋“ค์—ˆ๋Š”๋ฐ ์ €๋ฒˆ๊นŒ์ง€ ์งฐ๋˜ ์ฝ”๋“œ์™€ ๋‹ฌ๋ผ์„œใ…œใ…œ(multer ๋ถ€๋ถ„๋งŒ) ๋”ฐ๋กœ ์ถ”๊ฐ€ํ•ด์คฌ๋‹ค ๋”๋ณด๊ธฐ ์ถ”๊ฐ€ํ•œ multer ๋ถ€๋ถ„ let multer = require('multer'); let _storage =multer.diskStorage({ description: function (req, file, cb){ cb(null, 'uploads/') }, filename: function (req, file, cb){ cb(null, file.originalname); } }) let upload = multer({_storage: _storag..

[JavaScript] ๋‚ด๊ฐ€ ๋ณด๋ ค๊ณ  ์ •๋ฆฌํ•œ Do it ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ ๊ธฐ๋ณธํŽธ(2)

4์žฅ ๐Ÿจ ์กฐ๊ฑด๋ฌธ if(score>60){ alert("ํ†ต๊ณผ"); } else{ alert("์‹คํŒจ"); } ๐Ÿจ ์กฐ๊ฑด ์—ฐ์‚ฐ์ž score>60 ? alert("ํ†ต๊ณผ") : alert("์‹คํŒจ"); ๐Ÿจ falsy ๊ฐ’ 0 ""(๋นˆ ๋ฌธ์ž์—ด) NaN(์ˆซ์ž๊ฐ€ ์•„๋‹˜) unfined(๊ฐ’์ด ํ• ๋‹น๋˜์ง€ ์•Š์Œ) null(์œ ํšจํ•˜์ง€ ์•Š์€ ๊ฐ’) ๐Ÿจ switch๋ฌธ *case ๋’ค์— ๋ฌธ์ž์—ด๋กœ ์ฒ˜๋ฆฌํ•ด์•ผ ํ•จ (case๋ฌธ ๋๋‚  ๋•Œ๋งˆ๋‹ค break, ๋งˆ์ง€๋ง‰์— default ๊ผญ ์จ์ฃผ๊ธฐ) switch(num){ case "1": document.write("1๋ฒˆ์„ ์„ ํƒํ•˜์…จ์Šต๋‹ˆ๋‹ค"); break; case "2": document.write("2๋ฒˆ์„ ์„ ํƒํ•˜์…จ์Šต๋‹ˆ๋‹ค"); break; case "3": document.write("3๋ฒˆ์„ ์„ ํƒํ•˜์…จ์Šต๋‹ˆ๋‹ค"); ..