ํ‹ฐ์Šคํ† ๋ฆฌ ๋ทฐ

find ๋ฉ”์†Œ๋“œ

 

find์˜ ๋œป์€ ๋Œ€๋ถ€๋ถ„์ด ์•Œ๊ณ  ์žˆ๋“ฏ '์ฐพ๋‹ค'

๋‹จ์–ด์˜ ๋œป ๊ทธ๋Œ€๋กœ ๋ฐ์ดํ„ฐ ํ•˜๋‚˜๋ฅผ ์ฐพ๊ธฐ ์œ„ํ•œ ๋ฉ”์†Œ๋“œ์ด๋‹ค.

 

๐Ÿ“๊ธฐ๋ณธ ํ˜•์‹

๋ฐ์ดํ„ฐ ํ•˜๋‚˜๋ฅผ ์ฐพ๊ธฐ ์œ„ํ•ด์„œ๋Š” ์กฐ๊ฑด์ด ํ•„์š”ํ•˜๋‹ค.

return์€ ํ•„์ˆ˜์ด๊ณ  return ๋’ค์— ์กฐ๊ฑด์„ ์ž‘์„ฑํ•œ๋‹ค.

์š”์†Œ ํ•˜๋‚˜ ํ˜น์€ ๊ฐ์ฒด ํ•˜๋‚˜๊ฐ€ ์ถœ๋ ฅ๋œ๋‹ค.

๋ฐฐ์—ด.find((๋ฐฐ์—ด๋‚ด์˜_์š”์†Œ) => {
	return ์กฐ๊ฑด
});

 

 

์˜ˆ์‹œ

const numbers = [1, 2, 3, 4, 5];

const ์‚ผ๋ณด๋‹คํฐ์ˆ˜ํ•˜๋‚˜ = numbers.find((number) => {
	return number > 3
});

console.log(์‚ผ๋ณด๋‹คํฐ์ˆ˜ํ•˜๋‚˜); // 4
const products = [
  {
    ๋ธŒ๋žœ๋“œ: "์ˆ˜์•„๋ ˆ",
    ์ƒํ’ˆ๋ช…: "์ผ€์ด๋ธ” ์นด๋ผ ๋ฐ˜ํŒ” ๋‹ˆํŠธ - 6 Color",
    ๊ฐ€๊ฒฉ: 39900,
    ํ‰์ : 5,
    ํ›„๊ธฐ๊ฐœ์ˆ˜: 2997,
    ์ข‹์•„์š”์ˆ˜: 31352,
  },
  {
    ๋ธŒ๋žœ๋“œ: "์ปค๋ฒ„๋‚ซ",
    ์ƒํ’ˆ๋ช…: "์—์„ผ์…œ ์–ด์ฉŒ๊ณ ",
    ๊ฐ€๊ฒฉ: 34300,
    ํ‰์ : 5,
    ํ›„๊ธฐ๊ฐœ์ˆ˜: 45021,
    ์ข‹์•„์š”์ˆ˜: 156057,
  },
];

const ์ƒํ’ˆํ•˜๋‚˜ = products.find((product) => {
  return product.์ข‹์•„์š”์ˆ˜ > 100000;
});
console.log(์ƒํ’ˆํ•˜๋‚˜);

 

 

๐Ÿ“์—ฐ์Šต ํ•˜๊ธฐ

 

๋ฌธ์ œ 1. 

find ๋ฉ”์†Œ๋“œ๋ฅผ ์ด์šฉํ•˜์—ฌ ์˜ํ™” ์ œ๋ชฉ(title)์ด ์˜คํŽœํ•˜์ด๋จธ์ธ ์˜ํ™”๋ฅผ ํ•˜๋‚˜ ์ฐพ์•„ ์ฝ˜์†”์— ์ถœ๋ ฅํ•ด๋ณด์„ธ์š”.

const movies = [
  {
    title: "์˜คํŽœํ•˜์ด๋จธ",
    year: 2014,
    rating: 8.8,
  },
  {
    title: "์ธ์…‰์…˜",
    year: 2010,
    rating: 8.8,
  },
];
๋”๋ณด๊ธฐ

์ •๋‹ต

const ์˜คํŽœํ•˜์ด๋จธ = movies.find((movie) => {
  return movie.title === "์˜คํŽœํ•˜์ด๋จธ";
});
console.log(์˜คํŽœํ•˜์ด๋จธ);

 

๋ฌธ์ œ 2.

find ๋ฉ”์†Œ๋“œ๋ฅผ ์ด์šฉํ•˜์—ฌ ํ‰์ (rating)์ด 8์  ์ด์ƒ์ธ ์˜ํ™”๋ฅผ ํ•˜๋‚˜ ์ฐพ์•„ ์ฝ˜์†”์— ์ถœ๋ ฅํ•ด๋ณด์„ธ์š”.

const movies = [
  {
    title: "์˜คํŽœํ•˜์ด๋จธ",
    year: 2014,
    rating: 8.8,
  },
  {
    title: "์ธ์…‰์…˜",
    year: 2010,
    rating: 8.8,
  },
];
๋”๋ณด๊ธฐ

์ •๋‹ต

๋‘ ์˜ํ™” ๋ชจ๋‘ 8์  ์ด์ƒ์ด์ง€๋งŒ ๊ฐ€์žฅ ๋จผ์ € ์ฐพ์€ ํ•˜๋‚˜๋งŒ ์ถœ๋ ฅ๋œ๋‹ค.

const ํ‰์ ํŒ”์ ์ด์ƒ = movies.find((movie) => {
  return movie.rating >= 8;
});
console.log(ํ‰์ ํŒ”์ ์ด์ƒ);
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