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function1

[JavaScript] ํด๋กœ์ €(Closure) ํด๋กœ์ €(Closure)๋ž€? - MDN์—์„œ์˜ ์ •์˜ ํด๋กœ์ €๋Š” ๋…๋ฆฝ์ ์ธ (์ž์œ ) ๋ณ€์ˆ˜๋ฅผ ๊ฐ€๋ฆฌํ‚ค๋Š” ํ•จ์ˆ˜์ด๋‹ค. ๋˜๋Š”, ํด๋กœ์ € ์•ˆ์— ์ •์˜๋œ ํ•จ์ˆ˜๋Š” ๋งŒ๋“ค์–ด์ง„ ํ™˜๊ฒฝ์„ ‘๊ธฐ์–ตํ•œ๋‹ค’. “A closure is the combination of a function and the lexical environment within which that function was declared.” ํด๋กœ์ €๋Š” ํ•จ์ˆ˜์™€ ๊ทธ ํ•จ์ˆ˜๊ฐ€ ์„ ์–ธ๋์„ ๋•Œ์˜ ๋ ‰์‹œ์ปฌ ํ™˜๊ฒฝ(Lexical environment)๊ณผ์˜ ์กฐํ•ฉ์ด๋‹ค. ํด๋กœ์ €๋Š” ๋‹จ์ˆœํžˆ ํ•จ์ˆ˜ ์™ธ๋ถ€์˜ ๋ณ€์ˆ˜์— ์ ‘๊ทผ ๊ฐ€๋Šฅํ•œ ๋‚ด๋ถ€ ํ•จ์ˆ˜๊ฐ€ ์•„๋‹ˆ๋‹ค. ํ•จ์ˆ˜ ์‹คํ–‰์‹œ ์™ธ๋ถ€ ๋ณ€์ˆ˜ ์ ‘๊ทผ์„ ์œ„ํ•ด, ํ•จ์ˆ˜๊ฐ€ ์„ ์–ธ๋  ๋•Œ ๋ฉ”๋ชจ๋ฆฌ์— ์ €์žฅ๋˜๋Š” ๊ฐ์ฒด์ด๋‹ค. function outFunc(){ var reason = "test"; var v.. 2020. 11. 13.

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