ํฐ์คํ ๋ฆฌ ๋ทฐ
filter ๋ฉ์๋
filter ๋ฉ์๋๋ ์กฐ๊ฑด์ ๋ง๋ ๋ฐ์ดํฐ๋ฅผ ๋ชจ๋ ์ฐพ์ ๋ ์ฌ์ฉํ๋ค.
๐๊ธฐ๋ณธ ํ์
find์ ๋ง์ฐฌ๊ฐ์ง๋ก ์ฐพ์ผ๋ ค๋ฉด ์กฐ๊ฑด์ด ํ์ํ๋ค.
return์ ํ์์ด๊ณ return ๋ค์ ์กฐ๊ฑด์ ์์ฑํ๋ค.
์กฐ๊ฑด์ ๋ง๋ ๋ฐ์ดํฐ์ ๊ฐ์์ ์๊ด์์ด ๋ฐฐ์ด๋ก ์ถ๋ ฅ๋๋ค.
๋ฐฐ์ด.filter((๋ฐฐ์ด๋ด์_์์) => {
return ์กฐ๊ฑด
})
์์
const numbers = [1, 2, 3, 4, 5];
const ์ผ๋ณด๋คํฐ์๋ค = numbers.filter((number) => {
return number > 4;
});
console.log(์ผ๋ณด๋คํฐ์๋ค); // [4, 5]
const products = [
{
๋ธ๋๋: "์์๋ ",
์ํ๋ช
: "์ผ์ด๋ธ ์นด๋ผ ๋ฐํ ๋ํธ - 6 Color",
๊ฐ๊ฒฉ: 39900,
ํ์ : 5,
ํ๊ธฐ๊ฐ์: 2997,
์ข์์์: 31352,
},
{
๋ธ๋๋: "์ปค๋ฒ๋ซ",
์ํ๋ช
: "์์ผ์
์ด์ฉ๊ณ ",
๊ฐ๊ฒฉ: 34300,
ํ์ : 5,
ํ๊ธฐ๊ฐ์: 45021,
์ข์์์: 156057,
},
];
const ์ํ๋ค = products.filter((product) => {
return product.์ข์์์ > 100000;
});
console.log(์ํ๋ค);
/*
์กฐ๊ฑด์ ๋ง๋ ๋ฐ์ดํฐ๊ฐ ํ๋๋๋ผ๋ ์ฌ์ ํ ๋ฐฐ์ด์ด ์ถ๋ ฅ๋ฉ๋๋ค.
[
{
"๋ธ๋๋": "์ปค๋ฒ๋ซ",
"์ํ๋ช
": "์์ผ์
์ด์ฉ๊ณ ",
"๊ฐ๊ฒฉ": 34300,
"ํ์ ": 5,
"ํ๊ธฐ๊ฐ์": 45021,
"์ข์์์": 156057
}
]
*/
๐์ฐ์ต ๋ฌธ์
๋ฌธ์ 1.
์๋ ๋ฐ์ดํฐ์์ 2020๋ ์ดํ์ ๊ฐ๋ด๋ ์ํ๋ค์ ํํฐ๋งํด๋ณด์ธ์.
const movies = [
{
title: "์คํํ์ด๋จธ",
year: 2014,
rating: 8.53,
},
{
title: "์ธ์
์
",
year: 2010,
rating: 9.47,
},
{
title: "๋ฒ์ฃ๋์",
year: 2024,
rating: 7.52,
},
{
title: "๋ฒ ํ
๋2",
year: 2024,
rating: 6.61,
},
];
๋๋ณด๊ธฐ
์ ๋ต
const recentMovies = movies.filter((movie) => {
return movie.year >= 2020;
});
console.log(recentMovies);
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