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TIL

TIL :: DOM + Event

by sophie0527 2022. 5. 17.

์•„๋ž˜ ์ด๋ ฅ์„œ ์‚ฌ์ดํŠธ์— ๋“ค์–ด๊ฐ€์„œ ๊ฐœ๋ฐœ์ž ๋„๊ตฌ๋ฅผ ํ™œ์šฉํ•˜์—ฌ ์•„๋ž˜ ๊ณผ์ œ๋ฅผ ์ง„ํ–‰ํ•œ ํ›„ ๊ตฌ๊ธ€ ํด๋ž˜์Šค๋ฃธ์— ์ œ์ถœํ•ด์ฃผ์„ธ์š”.

  • https://hyunseob.github.io/resume/
  • ๊ฐœ๋ฐœ์ž ๋„๊ตฌ console ํŒจ๋„์—์„œ ์ž‘์„ฑํ•œ ์ฝ”๋“œ๋ฅผ ์บก์ณํ•ด์„œ ์ œ์ถœํ•˜๋ฉด ๋ฉ๋‹ˆ๋‹ค!
  • ์‹œํ–‰์ฐฉ์˜ค๋ฅผ ๊ฒช์–ด ์ฝ”๋“œ๊ฐ€ ์ง€์ €๋ถ„ํ•˜๋‹ค๋ฉด ๊ทธ ์ฝ”๋“œ ๊ทธ๋Œ€๋กœ! ์บก์ณํ•ด์„œ ์˜ฌ๋ ค์ฃผ์„ธ์š”!
  • ํžŒํŠธ1 : element ํŒจ๋„์—์„œ DOM์—์„œ ์ ‘๊ทผํ•˜๊ณ ์ž ํ•˜๋Š” ์š”์†Œ์˜ className์„ ํ™•์ธํ•ด์ฃผ์„ธ์š”.

 

๊ณผ์ œ 1. ์•„๋ž˜์™€ ๊ฐ™์ด ์ƒ๋‹จ์˜ ์„ค๋ช… ๋ถ€๋ถ„์˜ ๊ธ€์ž๋ฅผ ํŒŒ๋ž€์ƒ‰์œผ๋กœ ๋ฐ”๊ฟ”์ฃผ์„ธ์š”.

 

๊ณผ์ œ 2. ๊ธ€์ž์ƒ‰์„ ๋ฐ”๊พผ ๋ถ€๋ถ„์„ ํด๋ฆญํ•˜๋ฉด ์•„๋ž˜์™€ ๊ฐ™์€ alert ์ฐฝ์ด ๋œจ๋„๋ก ๊ตฌํ˜„ํ•ด์ฃผ์„ธ์š”.


๋‚˜์˜ ํ’€์ด

const a = document.getElementsByClassName('big-paragraph')[0];

a.style.color='blue'


document.getElementsByClassName('big-paragraph')[0].onclick = function () {alert('๋‚ด์šฉ์„ ํด๋ฆญํ–ˆ๊ตฐ์š”!');}

 

 

 

 

๊ณผ์ œ 1

// SOLUTION 1
document.getElementsByClassName('big-paragraph')[0].style.color = 'red'

// SOLUTION 2
const p = document.getElementsByClassName('big-paragraph')[0]
p.style.color = 'red'

๊ณผ์ œ 2

// SOLUTION 1
document.getElementsByClassName('big-paragraph')[0].addEventListener('click', () => {console.log('๋‚ด์šฉ์„ ํด๋ฆญํ–ˆ๊ตฐ์š”!')})

// SOLUTION 2
const clickHandler = (event) => {
  console.log('๋‚ด์šฉ์„ ํด๋ฆญํ–ˆ๊ตฐ์š”!')
}

document.getElementsByClassName('big-paragraph')[0].addEventListener('click', clickHandler)

// SOLUTION 3
const clickHandler = (event) => {
  console.log('๋‚ด์šฉ์„ ํด๋ฆญํ–ˆ๊ตฐ์š”!')
}
document.getElementsByClassName('big-paragraph')[0].onclick = clickHandler

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