Metode filter() Larik di JavaScript

Published on December 15, 2020
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By Ceferino IV Villareal

Bahasa Indonesia
Metode filter() Larik di JavaScript


Metode larik filter() membuat larik baru bersama elemen yang termasuk dalam kriteria yang ditentukan dari larik yang ada:

var numbers = [1, 3, 6, 8, 11];

var lucky = numbers.filter(function(number) {
  return number > 7;

// [ 8, 11 ]

Contoh di atas mengambil larik numbers dan mengembalikan larik terfilter yang baru bersama nilai-nilai yang lebih besar dari tujuh saja.

Sintaks filter

var newArray = array.filter(function(item) {
  return condition;

Argumen item adalah referensi ke elemen saat ini di larik karena filter() memeriksanya terhadap condition. Ini berguna untuk mengakses properti, dalam hal objek.

Jika item saat ini menyalurkan syarat, ia akan dikirim ke larik baru.

Menyaring larik objek

Kasus penggunaan umum .filter() adalah bersama larik objek melalui propertinya:

var heroes = [
    {name: “Batman”, franchise:DC},
    {name: “Ironman”, franchise: “Marvel”},
    {name: “Thor”, franchise: “Marvel”},
    {name: “Superman”, franchise:DC}

var marvelHeroes =  heroes.filter(function(hero) {
    return hero.franchise == “Marvel”;

// [ {name: “Ironman”, franchise: “Marvel”}, {name: “Thor”, franchise: “Marvel”} ]

Sumber Daya Tambahan

Untuk detail selengkapnya tentang filter() lihat Referensi MDN.

Filter hanya salah satu dari beberapa metode iterasi terhadap Larik di JavaScript, bacalah Cara Menggunakan Metode Iterasi Larik di JavaScript untuk mempelajari tentang metode lain seperti map() dan reduce().

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About the authors
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Ceferino IV Villareal


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