๋ชฉ๋ก2022/01/29 (2)

whatisthis?

javaScript. (20) Event Listener / Callback

๐Ÿ“Œ Event Listener - ํ•ด๋‹น ์ด๋ฒคํŠธ์— ๋Œ€ํ•ด ๋Œ€๊ธฐ์ค‘์ธ ๊ฒƒ. (์ƒ์‹œ Listening ์ค‘) - ์ด๋ฒคํŠธ๊ฐ€ ๋ฐœ์ƒํ–ˆ์„๋•Œ ๋“ฑ๋กํ–ˆ๋˜ ์ด๋ฒคํŠธ ๋ฆฌ์Šค๋„ˆ๊ฐ€ ์‹คํ–‰๋จ. window.onload = function () { alert('I\'m loaded'); }; - ๋Œ€ํ‘œ์ ์ธ ์ด๋ฒคํŠธ๋ฆฌ์Šค๋„ˆ ์ฝ”๋“œ์ž„. - window๊ฐ€ load ๋ ๋•Œ function ๋ถ€๋ถ„์ด ์‹คํ–‰๋˜๋Š” ๊ฒƒ. ์ด๋ฒคํŠธ๋ฆฌ์Šค๋„ˆ๋Š” ํ•ญ์ƒ on + '์ด๋ฒคํŠธ๋ช…'์œผ๋กœ ๋ช…๋ช…๋œ๋‹ค. ์˜ˆ> onclick ** ์ž์ฃผ ์“ฐ์ด๋Š” ์ด๋ฒคํŠธ ๋ชฉ๋ก onchange ๊ฐ์ฒด ๋‚ด์šฉ์ด ๋ฐ”๋€Œ๊ณ  / ํฌ์ปค์Šค๋ฅผ ์žƒ์„ ๋•Œ onclick ๊ฐ์ฒด๋ฅผ ํด๋ฆญํ•  ๋•Œ ondblclick ๊ฐ์ฒด๋ฅผ ๋”๋ธ”ํด๋ฆญํ•  ๋•Œ onerror ์—๋Ÿฌ๊ฐ€ ๋ฐœ์ƒํ–ˆ์„ ๋•Œ onfocus ๊ฐ์ฒด์— ํฌ์ปค์Šค๋˜์—ˆ์„ ๋•Œ onblur ๊ฐ์ฒด๊ฐ€ ํฌ์ปค์Šค๋ฅผ ์žƒ์„ ๋•Œ onkey..

WEB STUDY/JAVASCRIPT 2022. 1. 29. 16:53