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[JavaScript] 06.์ด๋ฒคํŠธ
๐Ÿ’ปProgramming/๐Ÿƒ‍โ™€๏ธJavaScript

[JavaScript] 06.์ด๋ฒคํŠธ

2022. 9. 22. 10:46

์ด๋ฒคํŠธ

HTML ์ด๋ฒคํŠธ๋Š” HTML ์š”์†Œ์—์„œ ๋ฐœ์ƒํ•  ์ˆ˜ ์žˆ๋Š” ์ƒํ™ฉ

๋ธŒ๋ผ์šฐ์ €๋Š” ์ด๋ฒคํŠธ๋ฅผ ๊ฐ์ง€ํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ ์ด๋ฒคํŠธ ๋ฐœ์ƒ ์‹œ ํ†ต์ง€

ex) HTML ์›น ํŽ˜์ด์ง€ ๋กœ๋”ฉ์ด ๋๋‚ฌ์„ ๋•Œ, HTML ์ž…๋ ฅ ํ•„๋“œ๊ฐ€ ๋ณ€๊ฒฝ๋  ๋•Œ, HTML ๋ฒ„ํŠผ์ด ํด๋ฆญ๋์„ ๋•Œ

 

on๊นŒ์ง€๋งŒ ์“ฐ๊ณ  ๋‹จ์ถ•ํ‚ค๋ฅผ ๋ˆŒ๋ €์„ ๋•Œ ๋‚˜์˜ค๋Š” ๊ฒƒ์ด ๋Œ€๋ถ€๋ถ„ ์ด๋ฒคํŠธ์ด๋‹ค. 

 

์ด๋ฒคํŠธ ๋“œ๋ฆฌ๋ธ(event-driven) ๋ฐฉ์‹ 

์›น ํŽ˜์ด์ง€์— ์ž‘์šฉ๋˜๋Š” ์ž๋ฐ” ์Šคํฌ๋ฆฝํŠธ๋Š” ๋ฐœ์ƒํ•œ ์ด๋ฒคํŠธ์— ๋ฐ˜์‘ํ•˜์—ฌ ํŠน์ • ๋™์ž‘์„ ์ˆ˜ํ–‰

๋ชจ๋“  application์ด ์ด๋ฒคํŠธ ๋ฐฉ์‹์œผ๋กœ ๋™์ž‘ํ•˜๋Š” ๊ฒƒ์œผ๋กœ, ์ด๋ฒคํŠธ๊ฐ€ ๋ฐœ์ƒํ•  ๋•Œ ๋ฏธ๋ฆฌ ์ง€์ •ํ•ด๋‘” ์ž‘์—…์„ ์ˆ˜ํ–‰ํ•˜๋Š” ๊ฒƒ 

์ด๋ฒคํŠธ๊ฐ€ ๋ฐœ์ƒํ•  ๋•Œ ๋ฏธ๋ฆฌ ์ง€์ •ํ•ด๋‘” ์ž‘์—…์„ ์ˆ˜ํ–‰ํ•˜๋Š” ๊ฒƒ 

 

์ฃผ์š” ์ด๋ฒคํŠธ ๊ฐ์ฒด 

์ด๋ฒคํŠธ๋ฅผ ๋ฐ›๊ณ  ๊ทธ ์ด๋ฒคํŠธ listenr๋ฅผ ๊ฐ€์งˆ ์ˆ˜ ์žˆ๋Š” ๊ฐ์ฒด์— ์˜ํ•ด ๊ตฌํ˜„๋œ ์ธํ„ฐํŽ˜์ด์Šค

EventTarget

์ด๋ฒคํŠธ๋ฅผ ๋ฐ›๊ณ  ๊ทธ ์ด๋ฒคํŠธ listener๋ฅผ ๊ฐ€์งˆ ์ˆ˜ ์žˆ๋Š” ๊ฐ์ฒด์— ์˜ํ•ด ๊ตฌํ˜„๋œ ์ธํ„ฐํŽ˜์ด์Šค

 

์ฃผ์š” ์ด๋ฒคํŠธ ๊ฐ์ฒด 

์ด๋ฒคํŠธ๋ฅผ ๋ฐ›๊ณ  ๊ทธ ์ด๋ฒคํŠธ listenr๋ฅผ ๊ฐ€์งˆ ์ˆ˜ ์žˆ๋Š” ๊ฐ์ฒด์— ์˜ํ•ด ๊ตฌํ˜„๋œ ์ธํ„ฐํŽ˜์ด์Šค

 

 

 

 

KeyboardEvent ์ธํ„ฐํŽ˜์ด์Šค

UI event

keyboardEvent

MouseEvent

FocusEvent

 

์ด๋ฒคํŠธ ํ•ธ๋“ค๋Ÿฌ 

๊ฐ์ฒด์˜ ์ด๋ฒคํŠธ ์†์„ฑ๊ฐ’์— ๋Œ€์ž…

์ด๋ฒคํŠธ๋ฅผ ๋“ฑ๋กํ•˜๋Š” ๊ฐ€์žฅ ์‰ฌ์šด ๋ฐฉ๋ฒ•

html ํƒœ๊ทธ์—์„œ ์ด๋ฒคํŠธ์˜ ์†์„ฑ์„ ์ด์šฉํ•˜์—ฌ ๋“ฑ๋ก 

ex) onclick()

๊ถŒ์žฅํ•˜์ง€ ์•Š๋Š” ๋ฐฉ์‹

 

set attribuute

 

 

์ด๋ฒคํŠธ ๋“ฑ๋ก

์ธ๋ผ์ธ ์ด๋ฒคํŠธ ํ•ธ๋“ค๋Ÿฌ ๋ฐฉ์‹

<button type="button" onclick="fun1();">ํ™•์ธ1</button>
function fun1() {
	alert("ํด๋ฆญ1");
}

 

์ธ๋ผ์ธ ์ด๋ฒคํŠธ ํ”„๋กœํผํ‹ฐ ๋ฐฉ์‹

<button type="button" class="btn">ํ™•์ธ</button>
btn.onclick = function() {
			alert("ํด๋ฆญ1");
		}
		
		// ๋‘ ๋ฒˆ์งธ ์ด๋ฒคํŠธ ๋“ฑ๋ก 
		btn.onclick = () => alert("ํด๋ฆญ2");

์ฒซ ๋ฒˆ์งธ ์ด๋ฒคํŠธ๋Š” ์‹คํ–‰๋˜์ง€๋งŒ ๋‘ ๋ฒˆ์งธ ์ด๋ฒคํŠธ๋Š” ์‹คํ–‰๋˜์ง€ ์•Š๋Š”๋‹ค.

๋ณ€์ˆ˜ x์— 10์„ ๋„ฃ๊ณ  20์„ ๋„ฃ์œผ๋ฉด ์ตœ์ข…์ ์œผ๋กœ 20์ด ์ €์žฅ๋˜๋Š” ๊ฒƒ๊ณผ ๊ฐ™์€ ๊ฐœ๋…์ด๋‹ค. 

๊ฐ€์žฅ ๊ฐ„๋‹จํ•œ ๋ฐฉ๋ฒ•์ด์ง€๋งŒ ๊ถŒ์žฅ๋˜์ง€ ์•Š๋Š” ๋ฐฉ๋ฒ•์ด๋‹ค. 

 

<button type="button" class="btn">ํ™•์ธ</button>

onclick ์‚ฌ์šฉXXXXXX

 

const btn = document.querySelector(".btn");
	
// ๋‘˜ ๋‹ค ์‹คํ–‰ 
// ์ฒซ ๋ฒˆ์งธ ๋ฐ”์ธ๋”ฉ 
btn.addEventListener("click",function(){
		alert("ํด๋ฆญ1");
});
	
// ๋‘ ๋ฒˆ์งธ ๋ฐ”์ธ๋”ฉ
btn.addEventListener("click",()=> alert('ํด๋ฆญ2'));

 

 

๋™์ ์œผ๋กœ ์ด๋ฒคํŠธ๊ฐ€ ๋“ฑ๋ก๋˜๋Š” ๋ฐฉ๋ฒ•์ด๋‹ค. 

๊ฐ€์žฅ ๊ถŒ์žฅ๋˜๋Š” ๋ฐฉ๋ฒ•์ด๋‹ค. 

์ฒซ ๋ฒˆ์งธ ๋ฐ”์ธ๋”ฉ๊ณผ ๋‘ ๋ฒˆ์งธ ๋ฐ”์ธ๋”ฉ ๋ชจ๋‘ ์‹คํ–‰๋œ๋‹ค. 

 

KeyboardEvent ์ธํ„ฐํŽ˜์ด์Šค

UI event

keyboardEvent

MouseEvent

FocusEvent

 

์ด๋ฒคํŠธ ํ•ธ๋“ค๋Ÿฌ 

๊ฐ์ฒด์˜ ์ด๋ฒคํŠธ ์†์„ฑ๊ฐ’์— ๋Œ€์ž…

์ด๋ฒคํŠธ๋ฅผ ๋“ฑ๋กํ•˜๋Š” ๊ฐ€์žฅ ์‰ฌ์šด ๋ฐฉ๋ฒ•

html ํƒœ๊ทธ์—์„œ ์ด๋ฒคํŠธ์˜ ์†์„ฑ์„ ์ด์šฉํ•˜์—ฌ ๋“ฑ๋ก 

ex) onclick()

๊ถŒ์žฅํ•˜์ง€ ์•Š๋Š” ๋ฐฉ์‹

 

set attribuute

 

 

'๐Ÿ’ปProgramming > ๐Ÿƒโ€โ™€๏ธJavaScript' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

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