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CSSStyleDeclaration JS Conversion


Filter Array JavaScript()

Contoh 1

Kembalikan larik semua nilai dalam usia[] yang berusia 18 tahun ke atas:

const ages = [32, 33, 16, 40];
const result = ages.filter(checkAdult);

function checkAdult(age) {
  return age >= 18;
}

Definisi dan Penggunaan

Metode filter()ini membuat larik baru yang diisi dengan elemen yang lulus tes yang disediakan oleh suatu fungsi.

Metode filter()tidak menjalankan fungsi untuk elemen kosong.

Metode filter()ini tidak mengubah larik asli.


Sintaksis

array.filter(function(currentValue, index, arr), thisValue)

Parameter

Parameter Description
function() Required.
A function to run for each array element.
currentValue Required.
The value of the current element.
index Optional.
The index of the current element.
arr Optional.
The array of the current element.
thisValue Optional. Default undefined
A value passed to the function as its this value.

Nilai Kembali

Jenis Keterangan
Sebuah array Mengandung unsur-unsur yang lulus ujian.
Jika tidak ada elemen yang lulus tes, ia mengembalikan array kosong.


Dukungan Peramban

filter()adalah fitur ECMAScript5 (ES5).

ES5 (JavaScript 2009) didukung penuh di semua browser:

Chrome IE Edge Firefox Safari Opera
Yes 9-11 Yes Yes Yes Yes

Contoh 2

Kembalikan nilai dalam usia[] yang melebihi angka tertentu:

<p><input type="number" id="ageToCheck" value="30"></p>

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

<script>
const ages = [32, 33, 12, 40];

function checkAge(age) {
  return age > document.getElementById("ageToCheck").value;
}

function myFunction() {
  document.getElementById("demo").innerHTML = ages.filter(checkAge);
}
</script>