Freecodecamp: JavaScript๋กœ ์ˆซ์ž ์ฆ๊ฐ€์— ๋„์ „ํ•˜๋Š” ๋ฐ ๋ฌธ์ œ๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค.

์— ๋งŒ๋“  2016๋…„ 07์›” 26์ผ  ยท  3์ฝ”๋ฉ˜ํŠธ  ยท  ์ถœ์ฒ˜: freeCodeCamp/freeCodeCamp

bug on increment test
JavaScript๋กœ ์ˆซ์ž ์ฆ๊ฐ€์— ๋„์ „ํ•˜๋Š” ๋ฐ ๋ฌธ์ œ๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค.
์‚ฌ์šฉ์ž ์—์ด์ „ํŠธ: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36 .
๊ฒฐ๊ณผ๋Š” 88์ด์–ด์•ผ ํ•˜์ง€๋งŒ 87๋กœ ๋‚˜ํƒ€๋‚ฉ๋‹ˆ๋‹ค. ์Šคํฌ๋ฆฐ์ƒท์—์„œ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

๋‚ด ์ฝ”๋“œ:

var myVar = 87;

// Only change code below this line
myVar = myVar++ ;


๊ฐ€์žฅ ์œ ์šฉํ•œ ๋Œ“๊ธ€

์•ˆ๋…•ํ•˜์„ธ์š” ๋ˆ„๊ตฐ๊ฐ€ ๋ฐฉ๋ฒ•์„ ์„ค๋ช…ํ•ด ์ฃผ์‹œ๊ฒ ์Šต๋‹ˆ๊นŒ? myVar = myVar๋ฅผ ๋ณ€๊ฒฝํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
์ƒˆ๋กœ์šด ๋ณ€์ˆ˜ "myVar1"์„ ์ƒ์„ฑํ•ด์•ผ ํ•จ์„ ์˜๋ฏธํ•ฉ๋‹ˆ๋‹ค.
myVar1 = ++myVar;

๋‹ค์Œ๊ณผ ๊ฐ™์ด ์ง€์‹œํ•˜๋Š” ๊ฒƒ์ด ๋” ์ข‹์ง€ ์•Š๊ฒ ์Šต๋‹ˆ๊นŒ?
์ด์ œ ์ƒˆ ๋ณ€์ˆ˜ myVar1์„ ๋งŒ๋“ค๊ณ  ์ฆ๊ฐ€๋œ myVar๋ฅผ ํ• ๋‹นํ•ฉ๋‹ˆ๋‹ค.

๋ชจ๋“  3 ๋Œ“๊ธ€

์‹ ๊ณ ํ•ด ์ฃผ์…”์„œ ๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค. ํ•˜์ง€๋งŒ ์ฝ”๋“œ๊ฐ€ ์ž˜๋ชป๋˜์—ˆ์Šต๋‹ˆ๋‹ค. ์ง€์นจ์„ ๋‹ค์‹œ ํ•œ ๋ฒˆ ์‚ดํŽด๋ณด๊ณ  ์—ฌ์ „ํžˆ ๋ฌธ์ œ๊ฐ€ ํ•ด๊ฒฐ๋˜์ง€ ์•Š์œผ๋ฉด ๋„์›€๋ง ์ฑ„ํŒ… ์—์„œ ๋„์›€์„ ์š”์ฒญํ•˜์„ธ์š”.

์ฆ๊ฑฐ์šด ์ฝ”๋”ฉ!

์˜ค, ํ—ˆ์œ„ ์‹ ๊ณ  ๋ฌธ์ œ์— ๋Œ€ํ•ด ์ฃ„์†กํ•˜์ง€๋งŒ ์ด๋ฏธ ๋‚ด ๊ฑฐ์ง“์„ ์ฐพ์•„ ์ˆ˜์ •ํ•˜์‹ญ์‹œ์˜ค.
increment

์•ˆ๋…•ํ•˜์„ธ์š” ๋ˆ„๊ตฐ๊ฐ€ ๋ฐฉ๋ฒ•์„ ์„ค๋ช…ํ•ด ์ฃผ์‹œ๊ฒ ์Šต๋‹ˆ๊นŒ? myVar = myVar๋ฅผ ๋ณ€๊ฒฝํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
์ƒˆ๋กœ์šด ๋ณ€์ˆ˜ "myVar1"์„ ์ƒ์„ฑํ•ด์•ผ ํ•จ์„ ์˜๋ฏธํ•ฉ๋‹ˆ๋‹ค.
myVar1 = ++myVar;

๋‹ค์Œ๊ณผ ๊ฐ™์ด ์ง€์‹œํ•˜๋Š” ๊ฒƒ์ด ๋” ์ข‹์ง€ ์•Š๊ฒ ์Šต๋‹ˆ๊นŒ?
์ด์ œ ์ƒˆ ๋ณ€์ˆ˜ myVar1์„ ๋งŒ๋“ค๊ณ  ์ฆ๊ฐ€๋œ myVar๋ฅผ ํ• ๋‹นํ•ฉ๋‹ˆ๋‹ค.

์ด ํŽ˜์ด์ง€๊ฐ€ ๋„์›€์ด ๋˜์—ˆ๋‚˜์š”?
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