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[JavaScript] 06. ์ด๋ฒคํŠธ - KeyboardEvent

2022. 9. 22. 15:46

KeyboardEvent ์ธํ„ฐํŽ˜์ด์Šค

 KeyboardEvent ์ธํ„ฐํŽ˜์ด์Šค๋Š” ํ‚ค๋ณด๋“œ์™€ ์‚ฌ์šฉ์ž๊ฐ€ ์ƒํ˜ธ ์ž‘์šฉํ•˜์—ฌ ๋ฐœ์ƒํ•˜๋Š” ์ด๋ฒคํŠธ๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค.

 

-ASCII ํ‚ค : a~z, A~Z, 0~9, ์—”ํ„ฐ ๋“ฑ 

๋ฐœ์ƒํ•˜๋Š” ์ด๋ฒคํŠธ: keydown - keypress - keyup

keydown, keyup: aํ‚ค ๋˜๋Š” A ํ‚ค๋ฅผ ๋ˆ„๋ฅด๋ฉด keyCode๋Š” ๋ชจ๋‘ 65

 

keypress : a ํ‚ค๋Š” 97, A๋Š” 65

keydown, keyup ์ด๋ฒคํŠธ๋Š” keyCode ์†์„ฑ์œผ๋กœ ๋Œ€๋ฌธ์ž๋ฅผ ๊ตฌ๋ถ„ํ•  ์ˆ˜ ์—†์Œ 

keypress๋Š” ์‹ค์ œ ๋ˆŒ๋Ÿฌ์ง„ ํ‚ค์ฝ”๋“œ๋ฅผ ๋ฐ˜ํ™˜

 

- F1~F12, Alt, Ctrl, Shift ๋“ฑ ํŠน์ˆ˜ํ‚ค 

๋ฐœ์ƒํ•˜๋Š” ์ด๋ฒคํŠธ : keydown~keyup

์ฃผ์š” ์†์„ฑ ์„ค๋ช…


altKey  code
 


ํ‚ค ์ด๋ฒคํŠธ๊ฐ€ ํŠธ๋ฆฌ๊ฑฐ ๋˜์—ˆ์„ ๋•Œ"ALT"ํ‚ค๋ฅผ ๋ˆŒ๋ €๋Š”์ง€ ์—ฌ๋ถ€๋ฅผ ๋ฐ˜ํ™˜
ctrIKey   ํ‚ค ์ด๋ฒคํŠธ๊ฐ€ ํŠธ๋ฆฌ๊ฑฐ ๋˜์—ˆ์„ ๋•Œ"CTRL"ํ‚ค๋ฅผ ๋ˆŒ๋ €๋Š”์ง€ ์—ฌ๋ถ€๋ฅผ ๋ฐ˜ํ™˜
shiftKey ํ‚ค ์ด๋ฒคํŠธ๊ฐ€ ํŠธ๋ฆฌ๊ฑฐ ๋˜์—ˆ์„ ๋•Œ"SHIFTํ‚ค๋ฅผ ๋ˆŒ๋ €๋Š”์ง€ ์—ฌ๋ถ€๋ฅผ ๋ฐ˜ํ™˜
code  ํ‚ค๋ณด๋“œ์˜ ์‹ค์ œ ํ‚ค๊ฐ’์„ ๋ฐ˜ํ™˜. A ๋‚˜ a ํ‚ค๋ฅผ ๋ˆ„๋ฅธ ๊ฒฝ์šฐ KeyA๋กœ ๋ฐ˜ํ™˜ ๋œ๋‹ค.
key ์ด๋ฒคํŠธ๋กœ ํ‘œ์‹œ๋œ ํ‚ค์˜ ํ‚ค ๊ฐ’์„ ๋ฌธ์ž์—ด๋กœ ๋ฐ˜ํ™˜ ํ•œ๋‹ค. ์†Œ๋ฌธ์ž aํ‚ค๋ฅผ ๋ˆ„๋ฅด๋ฉด a, ๋Œ€๋ฌธ ์ž Aํ‚ค๋ฅผ ๋ˆ„๋ฅด๋ฉด A๋ฅผ ๋ฐ˜ํ™˜
keyCode onkeypress์ด๋ฒคํŠธ๋ฅผ ํŠธ๋ฆฌ๊ฑฐ ํ•œ ํ‚ค์˜ ์œ ๋‹ˆ์ฝ”๋“œ์˜ ๋ฌธ์ž์ฝ”๋“œ ๋˜๋Š” lonkeydown ๋˜๋Š” onkeyup ์ด๋ฒคํŠธ๋ฅผ ํŠธ๋ฆฌ๊ฑฐ ํ•œ ํ‚ค์˜ ์œ ๋‹ˆ์ฝ”๋“œ์˜ ํ‚ค ์ฝ”๋“œ๋ฅผ ๋ฐ˜ํ™˜.
๋” ์ด์ƒ ์‚ฌ์šฉ์„ ๊ถŒ์žฅํ•˜์ง€ ์•Š๋Š”๋‹ค.

 

 

key ์ฝ”๋“œ๋Š” ์ƒˆ๋กœ ๋‚˜์˜จ ์†์„ฑ์œผ๋กœ keyCode๋ณด๋‹ค๋Š” key ์‚ฌ์šฉ์„ ๊ถŒ์žฅํ•œ๋‹ค.

key๋Š” ํ˜„์žฌ ๋ชจ๋“  ๋ธŒ๋ผ์šฐ์ €๊ฐ€ ์ง€์›๋œ๋‹ค๊ณ  ๋ณด์žฅ ๋ฐ›์„ ์ˆ˜ ์—†๋‹ค. (์˜ค๋ž˜๋œ ๋ธŒ๋ผ์šฐ์ €์˜ ๊ฒฝ์šฐ ์ง€์›์ด ์•ˆ ๋  ์ˆ˜ ์žˆ๋‹ค)

๋”ฐ๋ผ์„œ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ํ˜•ํƒœ๋กœ ์‚ฌ์šฉํ•œ๋‹ค.

let key = e.key||e.keyCode;

key๊ฐ€ ์—†์œผ๋ฉด keyCode๋ฅผ ์‚ฌ์šฉํ•ด๋ผ ~ 

 

 

 

keydown

inputs.onkeydown = function(e) {
	let keyCode = e.keyCode;
	// a๋ฅผ ๋ˆ„๋ฅด๋ฉด 65, A๋ฅผ ๋ˆ„๋ฅด๋ฉด 65
	let key = e.key; // ๋ชจ๋“  ๋ธŒ๋ผ์šฐ์ €๊ฐ€ ์ง€์›ํ•˜์ง€ ์•Š์Œ 
	// a๋ฅผ ๋ˆ„๋ฅด๋ฉด 'a', A๋ฅผ ๋ˆ„๋ฅด๋ฉด 'A'
	let s = "keydown:" + keyCode + "," + key + "<br>";
    layout.innerHTML = s;
}

 

ketpress

inputs.onkeypress = function(e) {
	let keyCode = e.keyCode;
	// a๋ฅผ ๋ˆ„๋ฅด๋ฉด 97, A๋ฅผ ๋ˆ„๋ฅด๋ฉด 65
	let key = e.key; // ๋ชจ๋“  ๋ธŒ๋ผ์šฐ์ €๊ฐ€ ์ง€์›ํ•˜์ง€ ์•Š์Œ
	// a๋ฅผ ๋ˆ„๋ฅด๋ฉด 'a', A๋ฅผ ๋ˆ„๋ฅด๋ฉด 'A'
	let s = "keypress:" + keyCode + "," + key + "<br>";
    layout.innerHTML += s;
}

 

keyup

inputs.onkeyup = function(e) {
	let keyCode = e.keyCode;
	// a๋ฅผ ๋ˆ„๋ฅด๋ฉด 65, A๋ฅผ ๋ˆ„๋ฅด๋ฉด 65
	let key = e.key; // ๋ชจ๋“  ๋ธŒ๋ผ์šฐ์ €๊ฐ€ ์ง€์›ํ•˜์ง€ ์•Š์Œ 
	// a๋ฅผ ๋ˆ„๋ฅด๋ฉด 'a', A๋ฅผ ๋ˆ„๋ฅด๋ฉด 'A'
	let s = "keyup:" + keyCode + "," + key + "<br>";
	layout.innerHTML += s;
}

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