[JS] ๐๏ธJavaScript 30 - Day 9
๐Day 9 - 14 Must Know Dev Tools Tricks
JavaScript 30์ Day 9 ํ๋ก์ ํธ๋ ๊ฐ๋ฐ์ ๋๊ตฌ์ ๋ค์ํ ๊ธฐ๋ฅ๋ค์ ์์๋ณด๋ ํ๋ก์ ํธ์ด๋ค.
๐ค๐์ฝ๋ ๋ชจ์๋ณด๊ธฐ
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Console Tricks!</title>
</head>
<body>
<p onClick="makeGreen()">รBREAKรDOWNร</p>
<script src="main.js"></script>
</body>
</html>
JavaScript
const dogs = [
{ name: "Snickers", age: 2 },
{ name: "hugo", age: 8 },
];
function makeGreen() {
const p = document.querySelector("p");
p.style.color = "#BADA55";
p.style.fontSize = "50px";
}
// Regular
console.log("Hello");
// Interpolated
console.log("Hello I am a %s string!", "๐");
// console.log(`Hello I am a ${...}`);
// Styled
console.log(
"%c I am some great text",
"font-size: 50px; background: tomato; text-shadow: 10px 10px 0 blue"
);
// warning!
console.log("Oh NOOO");
// Error :|
console.error("Shit!");
// Info
console.info("Crocodiles eat 3-4 people per year");
// Testing
const p = document.querySelector("p");
console.assert(p.classList.contains("ouch"), "This is wrong");
// clearing
// console.clear();
// Viewing DOM Elements
console.log(p);
console.dir(p);
// Grouping together
dogs.forEach((dog) => {
console.group(`${dog.name}`);
console.log(`This is ${dog.name}`);
console.log(`${dog.name} is ${dog.age} years old`);
console.log(`${dog.name} is ${dog.age * 7} dog years.`);
console.groupEnd(`${dog.name}`);
});
// counting
console.count("Wes");
console.count("Wes");
console.count("Steve");
console.count("Steve");
console.count("Wes");
console.count("Steve");
console.count("Wes");
console.count("Wes");
console.count("Steve");
console.count("Steve");
console.count("Steve");
console.count("Steve");
// timing
console.time("fetching data");
fetch("https://api.github.com/users/wesbos")
.then((data) => data.json())
.then((data) => {
console.timeEnd("fethcing data");
console.log(data);
});
console.table(dogs);
๐์ฝ๋ ์ค๋ช
console.log()
log()
๋ฉ์๋๋ console ์ค๋ธ์ ํธ์์ ๊ฐ์ฅ ์์ฃผ ์ฐ๋ ๋ฉ์๋๋ก ()์์ ๋ฉ์์ง๋ฅผ ์ถ๋ ฅํด์ค๋ค.
console.warn()
warn()
๋ฉ์๋๋ ์ฝ์์ ๊ฒฝ๊ณ ๋ฉ์์ง๋ฅผ ์ถ๋ ฅํด์ค๋ค.
console.error()
error()
๋ฉ์๋๋ ์ฝ์์ ์๋ฌ ๋ฉ์์ง๋ฅผ ์ถ๋ ฅํด์ค๋ค.
console.info()
info()
๋ฉ์๋๋ ์ฝ์์ ์ ๋ณด ๋ฉ์์ง๋ฅผ ์ถ๋ ฅํด์ค๋ค.
console.assert()
assert()
๋ฉ์๋๋ ์ฃผ์ด์ง ๊ฐ์ ์ด ๊ฑฐ์ง์ธ ๊ฒฝ์ฐ์ ์ฝ์์ ์ค๋ฅ ๋ฉ์์ง๋ฅผ ์ถ๋ ฅํ๋ค. ์ฐธ์ธ ๊ฒฝ์ฐ์๋ ์๋ฌด๊ฒ๋ ํ์ง ์๋๋ค.
console.clear()
clear()
๋ฉ์๋๋ ์ฝ์์ ๊ธฐ๋ก๋ ๋ฉ์์ง๋ฅผ ๋ชจ๋ ์ง์์ค๋ค.
console.dir()
dir()
๋ฉ์๋๋ ์ฝ์์ ์ฃผ์ด์ง ๊ฐ์ฒด์ ์์ฑ ๋ชฉ๋ก์ ์ถ๋ ฅํด์ค๋ค. log()
์ ๋ค๋ฅธ ์ ์ log()
๋ HTML ํํ๋ก ํธ๋ฆฌ ๊ตฌ์กฐ(ํ๊ทธ ๋ด์ฉ)๋ฅผ ์ถ๋ ฅํ๊ณ , dir()
์ JSON ํํ๋ก ํธ๋ฆฌ ๊ตฌ์กฐ(๊ฐ์ฒด์ ์์ฑ)๋ฅผ ์ถ๋ ฅํ๋ค.
console.count()
count()
๋ฉ์๋๋ ()์์ ์ธ์๊ฐ ๊ฐ์ ๊ฒ์ ํธ์ถ ํ์๋ฅผ ์ถ๋ ฅํด์ค๋ค.
console.group(), console.groupEnd()
group()
๋ฉ์๋๋ ์ฝ์์ ์๋ก์ด ์ธ๋ผ์ธ ๊ทธ๋ฃน์ ๋ง๋ค์ด์ค๋ค. console.groupEnd()
๊ฐ ํธ์ถ๋ ๋๊น์ง ์ถ๊ฐ ๋ ๋ฒจ๋ก ๋ค์ ์ฝ์ ๋ฉ์์ง๋ฅผ ๋ค์ฌ ์ด๋ค.
console.time(), console.timeEnd()
time()
๋ฉ์๋๋ ์์
์ด ์ผ๋ง๋ ๊ฑธ๋ฆฌ๋์ง ์ถ์ ํ ์ ์๋ค. ๊ฐ ํ์ด๋จธ์๊ฒ ๊ณ ์ ํ ์ด๋ฆ์ ์ค ์ ์๊ณ , console.timeEnd()
๊ฐ ํธ์ถ๋ ๋๊น์ง์ ์๊ฐ์ ์ถ๋ ฅํ๋ค.
console.table()
table()
๋ฉ์๋๋ ๋ฐ์ดํฐ๋ฅผ ํ์ ํํ๋ก ์ฝ์์ ์ถ๋ ฅํด์ค๋ค.
๐TIL(Today I Learned)
- ๊ฐ๋ฐ์ ๋๊ตฌ, ํนํ console์ ๋ค์ํ ๋ฉ์๋๋ค์ ์์๋ณผ ์ ์์๋ค. ํนํ
dir()
๊ณผlog()
๋ฉ์๋์ ์ฐจ์ด๋ฅผ ์ ํํ๊ฒ ์ ์ ์์๋ค. log()
,warn()
,error()
,info()
,assert()
,clear()
,dir()
,count()
,group() <-> groupEnd()
,time() <-> timeEnd()
,table()
'Language > JavaScript' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
[JS] ๐๏ธJavaScript 30 - Day 11 (0) | 2021.11.28 |
---|---|
[JS] ๐๏ธJavaScript 30 - Day 10 (0) | 2021.11.26 |
[JS] ๐๏ธJavaScript 30 - Day 8 (0) | 2021.11.22 |
[JS] ๐๏ธJavaScript 30 - Day 7 (0) | 2021.11.21 |
[JS] ๐๏ธJavaScript 30 - Day 6 (0) | 2021.11.19 |
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๋ค๋ฅธ ๊ธ
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